wearetheborg - 2018-05-17

This is on linux Mint 17
I have truecrypt (still have not upgraded, but I hope the Veracrypt commnity can help fix my dying HDD).

I have two HDDs in my system, one has two truecrypt (non-hidden) partitions /dev/sdb1 and /dev/sdb2

Lately I have been having some read errors, so I decided to do a backup.
/dev/sdb1 gave a lot of read errors like:

cp: error reading ...: Input/output error

cp: failed to extend...: Input/output error

/dev/sdb2 failed to mount. I guess the copying from //dev/sdb1 broke sdb2

Error: mount: wrong fs type, bad option, bad superblock on..

Question 1: How do I fix the bad superblock?
Note that if I give the wrong password, truecrypt immediately says wrong password.

Question 2: Can I fix the input-output errors on /dev/sdb1?

For Question 1, I came across this: https://www.cgsecurity.org/wiki/Recover_a_TrueCrypt_Volume

Under recovery for linux, it says
Find the fuse device and run TestDisk on the volume device.

What's a fuse device, how do I find it?
What's a volume device in my case?

In the code, that page says:

$ ./truecrypt -t --filesystem=none /data/data_for_testdisk/truecrypt.dd 
Enter password for /data/data_for_testdisk/truecrypt.dd: 
Enter keyfile [none]: 
Protect hidden volume? (y=Yes/n=No) [No]: 
Enter system administrator password: 
$ mount
...
truecrypt on /tmp/.truecrypt_aux_mnt1 type fuse.truecrypt (rw,nosuid,nodev,allow_other)
$ sudo testdisk /tmp/.truecrypt_aux_mnt1/volume

What is /data/data_for_testdisk/truecrypt.dd in my case?

Is the password the trucrypt volume password?

Thanks.

PS: Ext4 filesystem

 

Last edit: wearetheborg 2018-05-20