2

today i was installing ubuntu on an external hard drive and in the initial setup i marked the option "encrypt installation" and the clicked the install button, but i didn't notice that my internal hard drive(which has windows 10 into it) was selected.

When i clicked install a pop up showed up saying that 3 partitions were going to be deleted, so at that moment i noticed i choose the wrong drive, i cancelled the installation, went back, choose the right drive and i continued with the installation (This time i left the encrypt option disabled).

So far, so good with ubuntu, but when i failed to boot from windows i realized that i encrypted the whole drive!

I need the files back, i have no idea what to do next! Please help, i read i needed to do a back up, but i dont even know how to access the drive. Any comments or suggestion will we welcome.

4

Have you tried something similar to this from for example a live OS or rescue boot menu from a linux installation media (cd dvd usb etc...)

$ sudo cryptsetup luksOpen /dev/sd<yourEncryptedDiskId> <aNameThatwillBeCreatedIn:Dev/mapper> 

Like for exemple :

$ sudo cryptsetup luksOpen /dev/sda tmpData 

and then

$ sudo mount /dev/mapper/<TheNameUsedEarlier> /mnt #wherever you want

so as in the exemple :

$ sudo mount /dev/mapper/tmpData  /mnt #wherever you want

now you can access your data.

Now that what needed to be done is done you can close the device :

$ sudo umount /mnt  
$ sudo cryptsetup luksClose  tmpData
4
  • Hello, @M4rty after entering the pass phrase i get "Cannot use device /dev/sda3 which is in use (already mapped or mounted)." Any Ideas? – Pau Chittaro Oct 22 '17 at 14:42
  • when you type $ sudo mount , is sda3 listed? – M4rty Oct 22 '17 at 15:27
  • I restarted Ubuntu, and it let me see the device in which is created: sda 8:0 0 931,5G 0 disk ├─sda1 8:1 0 512M 0 part ├─sda2 8:2 0 488M 0 part └─sda3 8:3 0 930,5G 0 part └─sda5_crypt 252:0 0 930,5G 0 crypt Now i don't know what to do, if i try to mount it i get "mount: unknown filesystem type 'LVM2_member'" – Pau Chittaro Oct 22 '17 at 19:36
  • @PauChittaro Do you have LVM installed? sudo apt install lvm2 – Mikolasan Feb 23 at 5:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.