Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a serious problem here: My computer does not boot any more (hangs on the windows start screen), so I tried to use a Ubuntu Live CD access the files and scan for root kits, or at least back up everything.

However, this is not as easy as it sounds, because I have two major setup specialities:

  1. My computer is a Sony VPC Z13 with 3 64GB SSD disks that are in a fake raid
  2. My windows volume is encrypted using TrueCrypt

I have created a bootable Ubuntu usb drive which recognizes the raid by default:

ubuntu@ubuntu:/dev$ sudo dmraid -ay
RAID set "isw_bibiifejd_Volume0" already active
RAID set "isw_bibiifejd_Volume0p1" already active
RAID set "isw_bibiifejd_Volume0p2" already active
RAID set "isw_bibiifejd_Volume0p3" already active

isw_bibiifejd_Volume0p1 is an 8GB windows restore partition. I can mount this easily with mount /dev/mapper/isw_bibiifejd_Volume0p1 /mnt/win1. isw_bibiifejd_Volume0p2 is a 100M partition called "System Reserved" and was mounted automatically by ubuntu. I think this is the place of the bootloader (?). isw_bibiifejd_Volume0p2 is my windows partition, encrypted with true crypt. fdisk says the following:

ubuntu@ubuntu:/dev$ sudo fdisk -l /dev/mapper/isw_bibiifejd_Volume0p3

Disk /dev/mapper/isw_bibiifejd_Volume0p3: 183.6 GB, 183617154048 bytes
255 heads, 63 sectors/track, 22323 cylinders, total 358627254 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 393216 bytes
Disk identifier: 0x3ec32997

Disk /dev/mapper/isw_bibiifejd_Volume0p3 doesn't contain a valid partition table

I was trying to mount isw_bibiifejd_Volume0p3 with truecrypt, but I get an error:

ubuntu@ubuntu:/dev$ sudo truecrypt -t /dev/mapper/isw_bibiifejd_Volume0p3 /mnt/win3
Enter password for /dev/mapper/isw_bibiifejd_Volume0p3: 
Enter keyfile [none]: 
Protect hidden volume (if any)? (y=Yes/n=No) [No]: 
Incorrect password or not a TrueCrypt volume.

Then I tried this command, as my partition is a fully encrypted partition:

ubuntu@ubuntu:~$ truecrypt -t --mount-options=system /dev/mapper/isw_bibiifejd_Volume0p3 /mnt/win3 Enter password for /dev/mapper/isw_bibiifejd_Volume0p3: Enter keyfile [none]: Protect hidden volume (if any)? (y=Yes/n=No) [No]: Error: Partition device require

What does this mean? Google does not know anything about it.

Is my approach to mount the true crypt volume correct? Is there any other way?

share|improve this question
Have you tried mounting it using the TrueCrypt GUI? Maybe it gives better error messages? – Mika Fischer Jan 19 '12 at 0:34
Unfortunately not. – Heinrich Jan 19 '12 at 8:20
up vote 0 down vote accepted

I finally was able to restore the volume using a Windows PE (preinstalled environment). It is important to notice that using TrueCrypt 64 bit in the PE was impossible for me due to a bug. But 32bit version worked fine.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

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