blocks|key|2880264|text|您是否尝试从Xcode包中删除4.3SDK？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2880265|2880266|+/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs|blockquote|2880267|2880268|2880269|请同时删除中相应的.dmg文件|2880270|2880271|+~/库/缓存/com.apple.dt.Xcode/下载|2880272|2880273|2880274|再次prevent+Xcode+from+re-installing相同的包。|offset|length|2880275|2880276|对于XCode+>=+6，请参阅+@praveen-matanam+'s+answer|2880277|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/11672945/xcode-4-4-simulator-how-to-remove-older-unneeded-devices/11790983#11790983|1|https://stackoverflow.com/a/30206853/529977^0|0|0|0|0|0|0|0|0|0|0|2|W|0|0|0|G|R|1|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|17|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1A|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|L|5|E|7|1C|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1F|8|@]|9|@$Q|1G|R|1H|1|1I]]|A|$]]|$1|S|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1K|8|@]|9|@$Q|1L|R|1M|1|1N]]|A|$]]|$1|V|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12]]|13|$5|Y|Z|10|A|$11|14]]]]

Did you try to just delete the 4.3 SDK from within the Xcode Package?
<blockquote>
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs
</blockquote>
please also delete the corresponding .dmg file in
<blockquote>
~/Library/Caches/com.apple.dt.Xcode/Downloads
</blockquote>
to <a href="https://stackoverflow.com/questions/11672945/xcode-4-4-simulator-how-to-remove-older-unneeded-devices/11790983#11790983">prevent Xcode from re-installing</a> the same package again.
<hr />
for XCode &gt;= 6 see <a href="https://stackoverflow.com/a/30206853/529977"> @praveen-matanam 's answer</a>

blocks|key|226054|text|如果您只是删除iOS，Xcode4.6将提示您重新安装任何旧版本的SDK模拟器。为了避免这种情况，您还必须删除Xcode缓存。这样你就不会被迫在启动时重新安装旧版的SDK了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226055|要删除Xcode5.0模拟器，请删除这些代码，然后重新启动iOS：|226056|226057|/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/PhoneSimulator5.0.sdk|ordered-list-item|226058|~/Library/Caches/com.apple.dt.Xcode|226059|226060|例如，在进行了Xcode的全新安装之后，我从iOS偏好设置安装了Xcode5.0模拟器。后来，我决定5.1就足够了，但不能删除5.0版本。Xcode一直强迫我在发布时重新安装它。删除缓存文件和SDK后，它不再询问。|226061|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|R|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|S|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

Xcode 4.6 will prompt you to reinstall any older versions of the iOS Simulator if you just delete the SDK. To avoid that, you must also delete the Xcode cache. Then you won't be forced to reinstall the older SDK on launch.

To remove the iOS 5.0 simulator, delete these and then restart Xcode:

<ol>
<li>/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/PhoneSimulator5.0.sdk</li>
<li>~/Library/Caches/com.apple.dt.Xcode</li>
</ol>

For example, after doing a clean install of Xcode, I installed the iOS 5.0 simulator from Xcode preferences. Later, I decided that 5.1 was enough but couldn't remove the 5.0 version. Xcode kept forcing me to reinstall it on launch. After removing both the cache file and the SDK, it no longer asked.

blocks|key|3094385|text|您可以做的另一件事是将部署目标更改为最高值。这将阻止Scheme菜单显示较旧的版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3094386|为此，请转到:+Target->Summary，然后更改Deployment+Target。|3094387|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Another thing you can do is to change the Deployment target to the highest value. This will prevent the Scheme Menu from displaying older versions.

To do this go to:
Target->Summary then change the Deployment Target.

blocks|key|2880404|text|在Xcode+6%2B中，您可以简单地进入菜单>窗口>设备>模拟器并删除不需要的模拟器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2880405|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In Xcode 6+ you can simply go to Menu > Window > Devices > Simulators and delete a simulator you don't need.

blocks|key|3094466|text|在Xcode6及更高版本中，您可以从路径/Library/Developer/CoreSimulator/Profiles/Runtimes中找到并删除模拟器。重新启动Xcode以使其生效(可能不需要)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3094467|entityMap^0|K|1E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

In Xcode 6 and above, you can find and delete the simulators from the path <code>/Library/Developer/CoreSimulator/Profiles/Runtimes</code>. Restart Xcode in order to take effect (may not be needed).

blocks|key|3094489|text|除了@childno.de回答之外，您Mac目录|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3094490|3094491|+/private/var/db/receipts/|blockquote|offset|length|style|CODE|3094492|3094493|3094494|可能仍然包含过时的iPhoneSimulatorSDK+.bom和.plist文件，如：|3094495|3094496|+/private/var/db/receipts/com.apple.pkg.iPhoneSimulatorSDK8_4.bom+/private/var/db/receipts/com.apple.pkg.iPhoneSimulatorSDK8_4.plist|3094497|3094498|3094499|这可能会使Xcode首选项的Downloads选项卡显示该过时模拟器版本的勾号(√)。|3094500|要清除不需要的模拟器，您可以在Mac终端上使用以下bash命令进行搜索：|3094501|3094502|+sudo+find+/+-name+"*PhoneSimulator*"|3094503|3094504|3094505|然后转到相应的目录，手动删除不需要的SimulatorSDK|3094506|entityMap^0|0|0|1|P|0|0|0|S|4|X|6|0|0|1|1S|1U|1U|0|0|0|14|1|0|0|0|1|10|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|17|8|@$F|18|G|19|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1C|8|@$F|1D|G|1E|H|I]|$F|1F|G|1G|H|I]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]|$1|O|3|P|5|E|7|1I|8|@$F|1J|G|1K|H|I]|$F|1L|G|1M|H|I]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1P|8|@$F|1Q|G|1R|H|I]]|9|@]|A|$]]|$1|U|3|V|5|6|7|1S|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|X|3|Y|5|E|7|1U|8|@$F|1V|G|1W|H|I]]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|20|8|@]|9|@]|A|$]]]|14|$]]

In addition to @childno.de answer, your Mac directory 

<blockquote>
 <code>/private/var/db/receipts/</code> 
</blockquote>

may still contains obsolete iPhoneSimulatorSDK <code>.bom</code> and <code>.plist</code> files like this:

<blockquote>
 <code>/private/var/db/receipts/com.apple.pkg.iPhoneSimulatorSDK8_4.bom</code>
 <code>/private/var/db/receipts/com.apple.pkg.iPhoneSimulatorSDK8_4.plist</code>
</blockquote>

These could make your Downloads tab of Xcode's preferences show a tick (<code>√</code>) for that obsolete simulator version.

To purge the unwanted simulators, you can do a search using this bash command from your Mac terminal:

<blockquote>
 <code>sudo find / -name "*PhoneSimulator*"</code>
</blockquote>

Then go to corresponding directories to manually delete unwanted SimulatorSDKs

blocks|key|226704|text|这些答案的问题是，随着Xcode的每次更新，菜单和位置都会发生变化。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226705|只需转到/Applications/Xcode.app/Contents/Developer/Platforms并删除不需要的内容。Xcode可以很好地启动。如果你一点都不关心，那么你可以简单地从垃圾桶恢复。|offset|length|style|CODE|226706|entityMap^0|0|4|1G|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

The problem with these answers is that, with every Xcode update, menus and locations will change. 

Just go to <code>/Applications/Xcode.app/Contents/Developer/Platforms</code> and delete what you don't need. Xcode will start fine. If you're at all concerned then you can simply restore from Trash.

blocks|key|228408|text|在终端中运行此命令，删除当前版本的Xcode无法访问的模拟器(8%2B?)正在您的机器上使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|228409|xcrun+simctl+delete+unavailable|offset|length|style|CODE|228410|另外，如果你想回收模拟器相关的空间，Michael+Tsai发现删除模拟日志为他节省了30+GB。|228411|~/Library/Logs/CoreSimulator|code-block|syntax|javascript|228412|entityMap|0|LINK|mutability|MUTABLE|url|https://twitter.com/mjtsai/status/1022838770494832643^0|0|0|V|0|I|C|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|J|3|K|5|L|7|14|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Run this command in terminal to remove simulators that can't be accessed from the current version of Xcode (8+?) in use on your machine.

<code>xcrun simctl delete unavailable</code>

Also if you're looking to reclaim simulator related space <a href="https://twitter.com/mjtsai/status/1022838770494832643" rel="noreferrer">Michael Tsai</a> found that deleting sim logs saved him 30 GB.

<pre><code>~/Library/Logs/CoreSimulator
</code></pre>

blocks|key|223423|text|我试过所有的答案。他们对我来说都不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|223424|在Sierra+%2B+Xcode+8.2上对我起作用的是：|223425|/Library/Developer/CoreSimulator/Devices和删除所有设备。|offset|length|style|CODE|223426|(也许这对你不起作用，也许这是一个独立的解决方案，或者也许你必须在其他答案之外做这个，但我在这里做了所有的解决方案，所以不确定是什么做的)。只需注意，这里的一些答案是旧的，模拟器的位置已经改变。Snowcrash's+answer似乎是最新的。|223427|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/39944791/5175709^0|0|0|0|14|0|2P|I|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@$F|W|G|X|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|Y|8|@]|9|@$F|Z|G|10|1|11]]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

I tried all answers. None of them worked for me. 

What worked for me on Sierra + Xcode 8.2 was going to:

<code>/Library/Developer/CoreSimulator/Devices</code> and deleting all devices. 

(Maybe this won't work for you, maybe this is a solution as a standalone, or maybe you have to do this in addition to other answers, but I did all solutions here and so not sure what did the deed). Just be aware that some of the answers here are old and the location of simulator has changed. <a href="https://stackoverflow.com/a/39944791/5175709">Snowcrash's answer</a> seems to be most recent.

blocks|key|226715|text|在XCode中打开Window+-+Devices，然后选择并删除过时的模拟器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226716|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In XCode open Window - Devices, then select and remove the outdated simulators.

blocks|key|226224|text|我也有同样的问题。我快没地方了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226225|删除旧的设备模拟器没有帮助。|226226|我的空间问题是由xCode引起的。自从我安装了iOS之后，它在我的macOS上保存了每一个xCode版本的副本。|226227|删除您不需要的iOS版本并释放磁盘空间。我节省了50GB%2B的空间。|offset|length|style|BOLD|226228|​|226229|📷|atomic|226230|226231|226232|226233|备注：+->你看不到~/Library+inside+Finder吗？默认情况下，它是隐藏的。使用Terminal并输入cd+~/Library/Developer/Xcode/iOS\+DeviceSupport/或谷歌如何查看隐藏的文件夹。|CODE|226234|226235|226236|注意：+->如果在一台macOS计算机上有多个用户，请确保仅使用最初安装xCode的用户帐户查找目录。|226237|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/43a5afbe44deb0cb09f895267e882cbb.png|imageAlt^0|0|0|0|K|D|0|0|0|1|0|0|0|0|0|0|3|A|9|R|6|1D|8|1O|1C|0|0|0|0|3|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1A|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1B|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|1C|8|@$H|1D|I|1E|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1F|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|1G|8|@]|9|@$H|1H|I|1I|1|1J]]|A|$]]|$1|Q|3|M|5|6|7|1K|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1N|8|@$H|1O|I|1P|J|K]|$H|1Q|I|1R|J|V]|$H|1S|I|1T|J|V]|$H|1U|I|1V|J|V]|$H|1W|I|1X|J|V]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|20|8|@$H|21|I|22|J|K]]|9|@]|A|$]]|$1|10|3|-4|5|6|7|23|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17|18|-4]]]]

I had the same problem. I was running out of space.
Deleting old device simulators did NOT help.
My space issue was caused by xCode. It kept a copy of every iOS version on my macOS since I had installed xCode.
Delete the iOS version you don't want and free up disk space. I saved 50GB+ of space.
<a href="https://i.stack.imgur.com/61mIy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/61mIy.png" alt="enter image description here" /></a>
<hr />
<hr />
NOTE -&gt; can't you see <code>~/Library</code> inside <code>Finder</code>? It is hidden by default. Use <code>Terminal</code> and type <code>cd ~/Library/Developer/Xcode/iOS\ DeviceSupport/</code> or google how to see hidden folders.
<hr />
<hr />
NOTE -&gt; if you have multiple users on a single macOS machine, make sure to find the directory ONLY with the user account that originally installed xCode.

blocks|key|2880573|text|2020年10月更新|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2880574|如前所述，您可以使用xcrun做一些事情：|offset|length|style|CODE|2880575|2880576|xcrun+simctl+list+devices或xcrun+simctl+list+--json列出所有simulators|unordered-list-item|2880577|xcrun+simctl+delete+<device+udid>删除特定device|2880578|xcrun+simctl+delete+unavailable删除运行时不再支持的旧设备|2880579|2880580|使用xcrun可以做的更多事情(请参阅代码片段)|2880581|-+`xcrun+simctl+boot+<device+udid>`+to+launch+(multiple)+simulators
-+`xcrun+simctl+io+booted+recordVideo+—+type=mp4+./test.mp4`+to+record+simulator+video
-+`xcrun+simctl+io+booted+screenshot+./screen.png`+to+make+screenshot+of+simulator
-+`xcrun+simctl+openurl+booted+https://google.com`+to+open+URL+in+simulator
-+`xcrun+simctl+addmedia+booted+./test.mp4`+to+upload+photo+or+video+file+(for+photos+app)
-+`xcrun+simctl+get_app_container+booted+<your+apps+bundle+identifier>`+to+find+the+app+container+(where+identifier+is+like+*com.bundle.identifier*)
-+`xcrun+simctl+help`+to+explore+**more**+commands|code-block|syntax|javascript|2880582|​|2880583|原始答案|2880584|2017年9月，Xcode+9|BOLD|2880585|运行时|2880586|你可以在这里找到它们：|2880587|/Library/Developer/CoreSimulator/Profiles/Runtimes|2880588|2880589|📷|atomic|2880590|2880591|设备|2880592|要删除设备，请转至此处：|2880593|~/Library/Developer/CoreSimulator/Devices|2880594|使用Xcode删除它们要容易得多:+Xcode->Window->Devices+and+Simulator|2880595|2880596|2880597|帮助Xcode“忘记”运行时，并防止重新安装它们-在这里删除.dmg文件：|2880598|~/Library/Caches/com.apple.dt.Xcode/Downloads|2880599|我希望它能帮助一些人|2880600|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/35700d4ad6bbc5acb3a4e6d19d6af055.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/9763c9ad7fc103cdcec2b2d9eccc46b0.png^0|0|A|5|0|0|0|P|Q|O|0|0|X|0|0|V|0|0|2|5|0|0|0|0|8|7|0|0|0|0|0|0|1|0|0|0|0|0|0|0|0|1|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|26|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|27|8|@$D|28|E|29|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|2A|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|2B|8|@$D|2C|E|2D|F|G]|$D|2E|E|2F|F|G]]|9|@]|A|$]]|$1|L|3|M|5|K|7|2G|8|@$D|2H|E|2I|F|G]]|9|@]|A|$]]|$1|N|3|O|5|K|7|2J|8|@$D|2K|E|2L|F|G]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|2M|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|2N|8|@$D|2O|E|2P|F|G]]|9|@]|A|$]]|$1|S|3|T|5|U|7|2Q|8|@]|9|@]|A|$V|W]]|$1|X|3|Y|5|6|7|2R|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|2S|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|2T|8|@$D|2U|E|2V|F|13]]|9|@]|A|$]]|$1|14|3|15|5|6|7|2W|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|2X|8|@]|9|@]|A|$]]|$1|18|3|19|5|U|7|2Y|8|@]|9|@]|A|$V|W]]|$1|1A|3|Y|5|6|7|2Z|8|@]|9|@]|A|$]]|$1|1B|3|1C|5|1D|7|30|8|@]|9|@$D|31|E|32|1|33]]|A|$]]|$1|1E|3|Y|5|6|7|34|8|@]|9|@]|A|$]]|$1|1F|3|1G|5|6|7|35|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|6|7|36|8|@]|9|@]|A|$]]|$1|1J|3|1K|5|U|7|37|8|@]|9|@]|A|$V|W]]|$1|1L|3|1M|5|6|7|38|8|@]|9|@]|A|$]]|$1|1N|3|1C|5|1D|7|39|8|@]|9|@$D|3A|E|3B|1|3C]]|A|$]]|$1|1O|3|Y|5|6|7|3D|8|@]|9|@]|A|$]]|$1|1P|3|1Q|5|6|7|3E|8|@]|9|@]|A|$]]|$1|1R|3|1S|5|U|7|3F|8|@]|9|@]|A|$V|W]]|$1|1T|3|1U|5|6|7|3G|8|@]|9|@]|A|$]]|$1|1V|3|-4|5|6|7|3H|8|@]|9|@]|A|$]]]|1W|$1X|$5|1Y|1Z|20|A|$21|22|23|-4]]|24|$5|1Y|1Z|20|A|$21|25|23|-4]]]]

<h2>October 2020 update</h2>
As was mentioned, you can use <code>xcrun</code> to do a few things:
<ul>
<li><code>xcrun simctl list devices</code> or <code>xcrun simctl list --json</code> to list all simulators</li>
<li><code>xcrun simctl delete &lt;device udid&gt;</code> to delete specific device</li>
<li><code>xcrun simctl delete unavailable</code> to remove old devices for runtimes that are no longer supported</li>
</ul>
More things you can do with <code>xcrun</code> (see code snippet)
<div class="snippet" data-lang="js" data-hide="true" data-console="false" data-babel="false">
<div class="snippet-code snippet-currently-hidden">
<pre class="snippet-code-html lang-html prettyprint-override"><code>- `xcrun simctl boot &lt;device udid&gt;` to launch (multiple) simulators
- `xcrun simctl io booted recordVideo — type=mp4 ./test.mp4` to record simulator video
- `xcrun simctl io booted screenshot ./screen.png` to make screenshot of simulator
- `xcrun simctl openurl booted https://google.com` to open URL in simulator
- `xcrun simctl addmedia booted ./test.mp4` to upload photo or video file (for photos app)
- `xcrun simctl get_app_container booted &lt;your apps bundle identifier&gt;` to find the app container (where identifier is like *com.bundle.identifier*)
- `xcrun simctl help` to explore **more** commands</code></pre>
</div>
</div>

<h2>Original Answer</h2>
September 2017, Xcode 9
<h3>Runtimes</h3>
You will find them here:
<pre><code>/Library/Developer/CoreSimulator/Profiles/Runtimes
</code></pre>
<a href="https://i.stack.imgur.com/P7E9C.png" rel="noreferrer"><img src="https://i.stack.imgur.com/P7E9C.png" alt="enter image description here" /></a>
<h3>Devices</h3>
To delete devices go here:
<pre><code>~/Library/Developer/CoreSimulator/Devices
</code></pre>
Much easier to delete them use Xcode:
Xcode-&gt;Window-&gt;Devices and Simulators
<a href="https://i.stack.imgur.com/84SuT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/84SuT.png" alt="enter image description here" /></a>
Helping Xcode &quot;forget&quot; about runtimes and prevent from re-installing them - delete .dmg file(s) here:
<pre><code>~/Library/Caches/com.apple.dt.Xcode/Downloads
</code></pre>
I hope it will help someone

blocks|key|223488|text|Command%2BSpace|type|unstyled|depth|inlineStyleRanges|entityRanges|data|223489|类型‘模拟器’|223490|打开你不再需要的旧的beta模拟器。|223491|在dock中右击它，然后选择Options>'Show+in+Finder‘|223492|关闭应用程序，然后将其从文件夹中删除。|223493|:)|223494|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

Command+Space

Type 'simulator'

open the old beta simulator you no longer need.

right-click on it in the dock, then choose Options>'Show in Finder'

Close the app, then remove it from the folder.

:)

blocks|key|2880638|text|根据这里的一些答案，从我的Xcode菜单>窗口>设备>模拟器中删除一些模拟器对我即将死亡的磁盘空间没有任何帮助：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2880639|📷|atomic|offset|length|2880640|​|2880641|然而，cd+~/Library/Developer/Xcode/iOS\+DeviceSupport和运行du+-sh+*时，我得到了所有这些人：|style|CODE|2880642|2.9G++++10.0.1+(14A403)
1.3G++++10.1.1+(14B100)
2.9G++++10.3.2+(14F89)
1.3G++++10.3.3+(14G60)
1.9G++++11.0.1+(15A402)
1.9G++++11.0.3+(15A432)
2.0G++++11.1.2+(15B202)
2.0G++++11.2+(15C114)
2.0G++++11.2.1+(15C153)
2.0G++++11.2.2+(15C202)
2.0G++++11.2.6+(15D100)
2.0G++++11.4+(15F79)
2.0G++++11.4.1+(15G77)
2.3G++++12.0+(16A366)
2.3G++++12.0.1+(16A404)
2.3G++++12.1+(16B92)|code-block|syntax|javascript|2880643|加在一起就是33+GB！|2880644|一场大屠杀随之而来|2880645|查看更多详细信息here|2880646|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/abc21319b35ccb5b21f328b84faf55c7.png|imageAlt|1|LINK|MUTABLE|url|https://stackoverflow.com/questions/29930198/can-i-delete-data-from-ios-devicesupport^0|0|0|1|0|0|0|3|1B|1H|8|0|0|0|0|8|4|1|0^^$0|@$1|2|3|4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1C|8|@]|9|@$E|1D|F|1E|1|1F]]|A|$]]|$1|G|3|H|5|6|7|1G|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1H|8|@$E|1I|F|1J|K|L]|$E|1K|F|1L|K|L]]|9|@]|A|$]]|$1|M|3|N|5|O|7|1M|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|1N|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1O|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1P|8|@]|9|@$E|1Q|F|1R|1|1S]]|A|$]]|$1|X|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]]|Y|$Z|$5|10|11|12|A|$13|14|15|-4]]|16|$5|17|11|18|A|$19|1A]]]]

following some of the answers here, deleting some simulators from my Xcode Menu > Window > Devices > Simulators did nothing to help my dying disk space:
<a href="https://i.stack.imgur.com/DQdqA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DQdqA.png" alt="enter image description here"></a>

however, <code>cd ~/Library/Developer/Xcode/iOS\ DeviceSupport</code> and running <code>du -sh *</code> I got all of these guys:

<pre><code>2.9G 10.0.1 (14A403)
1.3G 10.1.1 (14B100)
2.9G 10.3.2 (14F89)
1.3G 10.3.3 (14G60)
1.9G 11.0.1 (15A402)
1.9G 11.0.3 (15A432)
2.0G 11.1.2 (15B202)
2.0G 11.2 (15C114)
2.0G 11.2.1 (15C153)
2.0G 11.2.2 (15C202)
2.0G 11.2.6 (15D100)
2.0G 11.4 (15F79)
2.0G 11.4.1 (15G77)
2.3G 12.0 (16A366)
2.3G 12.0.1 (16A404)
2.3G 12.1 (16B92)
</code></pre>

All together that's 33 GB! 

A blood bath ensued

see more details <a href="https://stackoverflow.com/questions/29930198/can-i-delete-data-from-ios-devicesupport">here</a>

blocks|key|226790|text|我写了一行bash脚本，用来删除你的模拟器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226791|xcrun+simctl+list+devices+%7C+grep+-E+-o+-i+"([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})"+%7C+xargs+-L1+xcrun+simctl+delete|code-block|syntax|javascript|226792|226793|xcrun+simctl+list+devices将列出安装在您的machine|unordered-list-item|offset|length|style|CODE|226794|grep+-E+-o+-i+"([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})"上的所有模拟器将抓取设备UUID|226795|xargs+-L1+xcrun+simctl+delete将尝试删除它找到的每个UUID的设备|226796|226797|如果您想查看它将执行的所有内容，可以在xcrun之前添加echo，即|226798|xcrun+simctl+list+devices+%7C+grep+-E+-o+-i+"([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})"+%7C+xargs+-L1+echo+xcrun+simctl+delete|226799|entityMap^0|0|0|0|0|P|0|0|1N|0|0|T|0|0|J|5|S|4|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|12|8|@$K|13|L|14|M|N]]|9|@]|A|$]]|$1|O|3|P|5|J|7|15|8|@$K|16|L|17|M|N]]|9|@]|A|$]]|$1|Q|3|R|5|J|7|18|8|@$K|19|L|1A|M|N]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1C|8|@$K|1D|L|1E|M|N]|$K|1F|L|1G|M|N]]|9|@]|A|$]]|$1|V|3|W|5|D|7|1H|8|@]|9|@]|A|$E|F]]|$1|X|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|Y|$]]

I wrote up one-line bash script that would delete ALL your simulators:

<pre><code>xcrun simctl list devices | grep -E -o -i "([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})" | xargs -L1 xcrun simctl delete
</code></pre>

<ul>
<li><code>xcrun simctl list devices</code> will list all the simulators installed on your machine</li>
<li><code>grep -E -o -i "([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})"</code> will grab the device UUID</li>
<li><code>xargs -L1 xcrun simctl delete</code> will attempt to delete the device for each UUID it found</li>
</ul>

If you want to see everything it'll execute, you can add <code>echo</code> before <code>xcrun</code>, i.e.

<pre><code>xcrun simctl list devices | grep -E -o -i "([0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12})" | xargs -L1 echo xcrun simctl delete
</code></pre>

blocks|key|226286|text|有些人试图用一种方法来修复它，有些人则用第二种方法。基本上，有两个问题，如果你检查并解决这两个问题-在99%25，它应该解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226287|226288|旧设备模拟器位于YOUR_MAC_NAME+(如Macintosh)+->+Users+->+YOUR_USERNAME+(daniel)+->+Library+->+Developer+->+Xcode+->+iOS+Device+Support。留在这里，最新的一个，今天是13.2.3+(17B111)，但将来它会改变。iOS版本的最高数字(这里是13.2.3)表示它是较新的。|ordered-list-item|offset|length|style|CODE|226289|在此之后通过运行xcrun+simctl+list+devices在Terminal中列出您的设备。其中许多可能是unavailable，因此可以通过运行xcrun+simctl+delete+unavailable将其删除。它也会释放一些空间。要确保一切正常，请再次运行xcrun+simctl+list+devices进行检查。您应该只能看到最新版本的设备(此处为13.2.3)，如下面的屏幕截图所示。|226290|226291|​|226292|📷|atomic|226293|226294|作为一个奖励，这与这个问题的相关性略低，但仍然有一些免费的空间。转到YOUR_MAC_NAME+(如Macintosh)+->+Users+->+YOUR_USERNAME+(如daniel)+->+Library+->+Developer+->+Xcode+->+Archives。您将看到许多归档部署的应用程序，很可能您并不需要所有这些应用程序。尝试删除这些不再使用的文件。|226295|使用这两种方法和奖励方法，我可以在Mac上获得额外的15+GB空间。|226296|PS。通过转到Xcode+->+Window+->+Devices+and+Simulators+->+Simulators+(或者在使用键盘快捷键时，简单地使用CMD+%2B+SHIFT+%2B+2+)从Xcode中删除模拟器，并在那里删除它是没有帮助的。您真的需要执行所描述的步骤。|226297|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/8367ce269c940fbe34fc22d73000e334.png|imageAlt^0|0|0|8|D|O|9|12|5|1B|D|1Q|6|21|7|2C|9|2P|5|2Y|I|3V|F|4X|6|0|8|P|Y|8|1L|B|25|V|3S|P|54|6|0|0|0|0|1|0|0|0|Y|D|1E|9|1S|5|21|D|2H|6|2S|7|33|9|3G|5|3P|8|0|0|7|5|G|6|Q|M|1G|A|29|3|2F|5|2N|1|0^^$0|@$1|2|3|4|5|6|7|17|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|19|8|@$F|1A|G|1B|H|I]|$F|1C|G|1D|H|I]|$F|1E|G|1F|H|I]|$F|1G|G|1H|H|I]|$F|1I|G|1J|H|I]|$F|1K|G|1L|H|I]|$F|1M|G|1N|H|I]|$F|1O|G|1P|H|I]|$F|1Q|G|1R|H|I]|$F|1S|G|1T|H|I]|$F|1U|G|1V|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|1W|8|@$F|1X|G|1Y|H|I]|$F|1Z|G|20|H|I]|$F|21|G|22|H|I]|$F|23|G|24|H|I]|$F|25|G|26|H|I]|$F|27|G|28|H|I]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|29|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|2A|8|@]|9|@]|A|$]]|$1|O|3|P|5|Q|7|2B|8|@]|9|@$F|2C|G|2D|1|2E]]|A|$]]|$1|R|3|N|5|6|7|2F|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|2G|8|@$F|2H|G|2I|H|I]|$F|2J|G|2K|H|I]|$F|2L|G|2M|H|I]|$F|2N|G|2O|H|I]|$F|2P|G|2Q|H|I]|$F|2R|G|2S|H|I]|$F|2T|G|2U|H|I]|$F|2V|G|2W|H|I]|$F|2X|G|2Y|H|I]]|9|@]|A|$]]|$1|U|3|V|5|6|7|2Z|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|30|8|@$F|31|G|32|H|I]|$F|33|G|34|H|I]|$F|35|G|36|H|I]|$F|37|G|38|H|I]|$F|39|G|3A|H|I]|$F|3B|G|3C|H|I]|$F|3D|G|3E|H|I]]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|3F|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15|16|-4]]]]

Some people try to fix it using one way, some the second. Basically, there are 2 issues, which if you check them out &amp; solve both - in 99% it should fix this issue:

<ol>
<li>Old device simulators located at <code>YOUR_MAC_NAME</code> (e.g. <code>Macintosh</code>) -> <code>Users</code> -> <code>YOUR_USERNAME</code> (<code>daniel</code>) -> <code>Library</code> -> <code>Developer</code> -> <code>Xcode</code> -> <code>iOS Device Support</code>. Leave there, the newest one, as of today this is <code>13.2.3 (17B111)</code>, but in future it'll change. The highest number (here <code>13.2.3</code>) of the iOS version indicates that it's newer.</li>
<li>After this list your devices in <code>Terminal</code> by running <code>xcrun simctl list devices</code>. Many of them might be <code>unavailable</code>, therefore delete them by running <code>xcrun simctl delete unavailable</code>. It'll free some space as well. To be sure that everything is fine check it again by running <code>xcrun simctl list devices</code>. You should see devices only from the newest version (here <code>13.2.3</code>) like the screenshot below shows.</li>
</ol>

<a href="https://i.stack.imgur.com/XlLMO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XlLMO.png" alt="enter image description here"></a>

As a bonus which is slightly less relevant to this question, but still free's some space. Go to <code>YOUR_MAC_NAME</code> (e.g. <code>Macintosh</code>) -> <code>Users</code> -> <code>YOUR_USERNAME</code> (e.g. <code>daniel</code>) -> <code>Library</code> -> <code>Developer</code> -> <code>Xcode</code> -> <code>Archives</code>. You'll see many archived deployed application, most probably you don't need all of them. Try to delete these ones, which are not being used anymore.

Using these 2 methods and the bonus method I was able to get extra 15 GB of space on my Mac.

PS. Simply deleting simulators from Xcode by going to <code>Xcode</code> -> <code>Window</code> -> <code>Devices and Simulators</code> -> <code>Simulators</code> (or simply <code>CMD</code> + <code>SHIFT</code> + <code>2</code> when using keyboard shortcut) and deleting it there won't help. You really need to go for the described steps.

blocks|key|226304|text|在Mac上，选中/Library/Developer/Xcode/iOS\+DeviceSupport|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226305|​|226306|📷|atomic|offset|length|226307|226308|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/f3bc3fbbfcaa087b7765f41044f0d67b.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

On Mac, check /Library/Developer/Xcode/iOS\ DeviceSupport
<img src="https://i.stack.imgur.com/lPASj.png" alt="iOS DeviceSupport " />

blocks|key|223551|text|您可以使用以下代码片段删除不可用的运行时：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|223552|echo+"rm+-rf+$(xcrun+simctl+list+runtimes+-j+%7C\
++++++jq+".runtimes[]+%7C+select(.isAvailable%7Cnot)+%7C+.bundlePath"+%7C+xargs)"|code-block|syntax|javascript|223553|要执行，请删除echo或在末尾添加%7C+bash。|offset|length|style|CODE|223554|如果没有可用的jq命令，可以使用brew+install+jq获取该命令|223555|entityMap^0|0|0|7|4|H|6|0|7|2|G|F|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@$I|Y|J|Z|K|L]|$I|10|J|11|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|P|$]]

You can use the following snippet to delete unavailable runtimes:
<pre><code>echo &quot;rm -rf $(xcrun simctl list runtimes -j |\
 jq &quot;.runtimes[] | select(.isAvailable|not) | .bundlePath&quot; | xargs)&quot;
</code></pre>
to execute, remove <code>echo</code> or add <code>| bash</code> at the end.
If you don't have <code>jq</code> command available, you can get it using <code>brew install jq</code>

blocks|key|228602|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|228603|打开Xcode+-->转到窗口(从菜单栏)+-->设备和模拟器-->单击模拟器-->右键单击要删除的模拟器-->单击删除|ordered-list-item|228604|228605|228606|删除您以前作为额外组件通过Xcode.|228607|安装的任何不需要的模拟器|228608|228609|开放式终端|unordered-list-item|228610|228611|打开/Library/Developer/CoreSimulator/Profiles/Runtimes的|228612|类型|228613|228614|228615|删除不需要的模拟器|offset|length|style|BOLD|228616|228617|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|9|0|0^^$0|@$1|2|3|-4|4|5|6|13|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|14|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|16|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|17|7|@]|8|@]|9|$]]|$1|H|3|I|4|5|6|18|7|@]|8|@]|9|$]]|$1|J|3|-4|4|5|6|19|7|@]|8|@]|9|$]]|$1|K|3|L|4|M|6|1A|7|@]|8|@]|9|$]]|$1|N|3|-4|4|5|6|1B|7|@]|8|@]|9|$]]|$1|O|3|P|4|5|6|1C|7|@]|8|@]|9|$]]|$1|Q|3|R|4|M|6|1D|7|@]|8|@]|9|$]]|$1|S|3|-4|4|5|6|1E|7|@]|8|@]|9|$]]|$1|T|3|-4|4|5|6|1F|7|@]|8|@]|9|$]]|$1|U|3|V|4|M|6|1G|7|@$W|1H|X|1I|Y|Z]]|8|@]|9|$]]|$1|10|3|-4|4|5|6|1J|7|@]|8|@]|9|$]]|$1|11|3|-4|4|5|6|1K|7|@]|8|@]|9|$]]]|12|$]]

<ol>
<li>Open Xcode --&gt; Go to Window (from menu bar) --&gt; Devices and Simulators
--&gt; Click on Simulator --&gt; Right-click on the simulator that you want to delete --&gt; Click Delete
</li>
<li>To delete any unwanted simulators that you installed in the past as an extra Component through Xcode.
</li>
</ol>
<ul>
<li>Open Terminal
</li>
<li>Type open /Library/Developer/CoreSimulator/Profiles/Runtimes
</li>
<li>Delete undesired simulators
</li>
</ul>

blocks|key|226366|text|更新2021|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226367|我们可以只使用存储管理工具:+CMD+%2B+Space和搜索存储：|226368|在Developer下:您可以找到Xcode+Cache和构建文件，还可以删除旧版本的iOS支持文件。|226369|​|226370|📷|atomic|offset|length|226371|226372|在macOS+Big+Sur上测试|226373|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/545236704d8d4af5367da5ff6631e36d.png|imageAlt^0|0|0|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|12|8|@]|9|@$K|13|L|14|1|15]]|A|$]]|$1|M|3|G|5|6|7|16|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|17|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W|X|-4]]]]

<h1>Update 2021</h1>
We can just use the Storage Management tool:
CMD + Space and search storage:
Under Developer: you can find Xcode Cache and build files and also old version of iOS support files that you can delete.
<a href="https://i.stack.imgur.com/diMew.png" rel="noreferrer"><img src="https://i.stack.imgur.com/diMew.png" alt="enter image description here" /></a>
Tested on macOS Big Sur

I'm running Xcode 4.3.1 iOS-Simulator which originally only supports iOS 5.1.

I need to test my code with iOS 4.3, so I used Xcode's "Install" feature to install it as described in <a href="https://apple.stackexchange.com/questions/47323">"Installing Xcode with iOS 4.3 device simulator?"</a>

Now I'm finished with testing but cannot find a way to uninstall the 4.3 portions ("iPhone 4.3 Simulator" and "iPad 4.3 Simulator"). I want to reduce the clutter in the Scheme menu.

No one on Apple's Xcode listserv knew the answer!

EDIT: note that much has changed since Xcode 4.3, so suggest anyone reading this look at all the answers. The newest ones such as Steve Moser's may be of more use to you!

EDIT 10/2017: Posted on Twitter by Julio Carrettoni‏ 

<blockquote>
 If you are an iOS developer, execute this: 
 <code>$ xcrun simctl delete unavailable</code> 
 It removes old simulators Xcode no longer use. For me it was 6Gb
 Did not try it myself...
</blockquote>

[Also, I just saw Russ Bishop mentioned this in a comment below already...]

Xcode Simulator: how to remove older unneeded devices?

存储管理

Xcode

我运行的是Xcode4.3.1 iOS模拟器，它最初只支持iOS 5.1。我需要使用Xcode4.3测试我的代码，所以我使用了iOS的" install“特性来安装它，如中所述现在我完成了测试，但是找不到卸载4.3部分的方法("iPhone 4.3模拟器“和"iPad 4.3模拟器”)。我想减少Scheme菜单中的杂乱...

问Xcode模拟器:如何删除旧的不需要的设备？
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