라즈베리 파이 ntfs 디스크 오류 고치기

갑자기 전원이 나가는 등의 오류로 외부 ntfs 디스크가 마운트가 안될 때

sudo apt install ntfs-3g
sudo ntfsfix /dev/sdaX

Mounting volume... $MFTMirr does not match $MFT (record 3).
FAILED
Attempting to correct errors... 
Processing $MFT and $MFTMirr...
Reading $MFT... OK
Reading $MFTMirr... OK
Comparing $MFTMirr to $MFT... FAILED
Correcting differences in $MFTMirr record 3...OK
Processing of $MFT and $MFTMirr completed successfully.
Setting required flags on partition... OK
Going to empty the journal ($LogFile)... OK
Checking the alternate boot sector... OK
NTFS volume version is 3.1.
NTFS partition /dev/sda1 was processed successfully.

이후 다시 마운트하니 된다.