我有一个外部驱动器可能需要修理。wrong fs type, bad option, bad superblock on /dev/sda1, missing codepage or helper program, or other error.dd if=/dev/input/DEVICE-HERE of=/dev/OUTPUT/DEVICE-HERE bs=64K conv=noerror,sync
helper program, or other error In some cases useful info is found in syslog -try dmesg | tail or so[ 406.864677] EXT4-fs (sdb4): bad block size 65536
[ 429.098776