external hdd disapeared

Linux@lemmy.ml – 20 points – 2 months ago

I have a hdd attached to my server. It's sda but has 2 partitions so sda1 @16M and sda2 @3.6T It defaulted to being in the location /media/devmon so I kept that and it worked for ages. Suddenly the data is gone. I had files located here: /media/devmon/4tb_drive/kiwix/zim and that directory is now empty. But I put the drive into a Windows box, and everything was there.

When I run mount /dev/sda2 /media/devmon/ it says:

The disk contains an unclean file system (0, 0).
Metadata kept in Windows cache, refused to mount.
Falling back to read-only mount because the NTFS partition is in an
unsafe state. Please resume and shutdown Windows fully (no hibernation
or fast restarting.)
Could not mount read-write, trying read-only

I originally formatted this drive in Windows, is that the issue? Ideally I'd use btrfs or zfs not ntfs, but here we are.

How do I get access again?

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@Dust0741 sometimes this can help -> in a linux console: ntfsfix -b -d /dev/sda1 oder ntfsfix -b -d /dev/sda2.

root@skynet:~# ntfsfix -b -d /dev/sda1  
Mounting volume... NTFS signature is missing.  
FAILED  
Attempting to correct errors... NTFS signature is missing.  
FAILED  
Failed to startup volume: Invalid argument  
NTFS signature is missing.  
Trying the alternate boot sector  
Unrecoverable error  
Volume is corrupt. You should run chkdsk.  

root@skynet:~# ntfsfix -b -d /dev/sda2  
Mounting volume... OK  
Processing of $MFT and $MFTMirr completed successfully.  
Checking the alternate boot sector... OK  
NTFS volume version is 3.1.  
Going to un-mark the bad clusters ($BadClus)... No bad clusters...OK  
NTFS partition /dev/sda2 was processed successfully.

turned off windows quick start ran chkdks D: and waited...then shut down and put drive back into linux and reboot. still no

any ideas? clearly not the larger partition, which is good.

I used this when my son's computer wouldn't boot after a Windows update. None of Microsoft's tools would repair the disk.

I attached it to mine and ran ntfsfix on it. Success!