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halfer 06-27-2009 08:07 AM

Ubuntu 9.x install corrupted NTFS partition; repair corrupted TrueCrypt partition
Hi all.

I am a an occasional Linux user and have an improving technical ability with it. I recently installed Ubuntu Jaunty Jackalope and found it so good I am intending to switch from Vista Business (Vista can be a standby if I need to do something that requires Windows).

However when installing Ubuntu 9, unfortunately a 60Gb NTFS partition disappeared from Windows. Worried that I was going to lose it, I found an open source repair tool called TestDisk, which promptly restored my NTFS partition (yay) and turned a 30Gb TrueCrypt partition into free space (boo).

I am guessing it has just modified the partition table, and not touched the actual partition on the disk at all. The disk is in a relatively new laptop (18 months old, 160Gb) and in good condition afaik.

My idea to restore this is as follows: use cfdisk to do a "New partition" in this 30Gb free space, then choose a type of '82 - Linux swap / Solaris', which is the same type of another, healthy TrueCrypt partition (obviously I won't format it though!). However this is a bit experimental and I don't know if this will modify/destroy the partition.

If anyone can give me some advice on (a) how to do the above safely or (b) saving the 30Gb "free space" partition elsewhere so I can experiment restoring it, then it would be much appreciated!

mostlyharmless 06-30-2009 02:59 PM

Don't know if you already fixed this, but if you want to copy the partition so that you can experiment restoring it, then probably "dd" is the tool of choice. There's a massive "Learn the dd command" thread on this forum if you need examples.

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