Arch Linux

cybersage

Member

Registered: 2026-01-31

Posts: 2

partition doesn't mount after decrypting

Hi,

I've made some backups on an external hard disk. The partition is opened with cryptsetup, but I can't mount it. I have important data on it, and I would like to restore it.
Following errors messages:

$ sudo cryptsetup open /dev/sda1 crypt-usb

$ sudo mount /dev/mapper/crypt-usb /mnt/usb1
mount: /mnt/usb1: impossible de lire le superbloc à l’adresse /dev/mapper/crypt-usb.
       dmesg(1) peut avoir plus d'informations après un échec de l'appel système du montage.

$ lsblk
NAME           MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
sda              8:0    0 465,8G  0 disk  
└─sda1           8:1    0 465,8G  0 part  
  └─crypt-usb  253:3    0 465,7G  0 crypt 
nvme0n1        259:0    0 232,9G  0 disk  
├─nvme0n1p1    259:1    0     1G  0 part  /boot
├─nvme0n1p2    259:2    0    32G  0 part  
│ └─root       253:0    0    32G  0 crypt /
├─nvme0n1p3    259:3    0     4G  0 part  
│ └─swap-crypt 253:1    0     4G  0 crypt [SWAP]
└─nvme0n1p4    259:4    0 195,9G  0 part  
  └─home-crypt 253:2    0 195,9G  0 crypt /home

$ sudo dmesg
....
[80050.540062] sd 4:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK cmd_age=9s
[80050.540084] sd 4:0:0:0: [sda] tag#0 Sense Key : Hardware Error [current] 
[80050.540095] sd 4:0:0:0: [sda] tag#0 Add. Sense: No additional sense information
[80050.540105] sd 4:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 1d 16 d4 98 00 00 08 00
[80050.540110] I/O error, dev sda, sector 488035480 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
[80050.540193] JBD2: Failed to read block at offset 149907
[80050.540210] JBD2: journal recovery failed
[80050.540217] EXT4-fs (dm-3): error loading journal

frostschutz

Member

Registered: 2013-11-15

Posts: 1,619

Re: partition doesn't mount after decrypting

smartctl -a /dev/sda?

If the drive is failing but you still need data on it - next step would be ddrescue to another drive.