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Re: whole disk encryption on multi boot laptop
From: Alexander Klimov <alserkli () inbox ru>
Date: Tue, 24 Nov 2009 11:25:15 +0200 (IST)

On Thu, 15 Oct 2009, paul haigh wrote:
I have a Lenovo T61 laptop which has the folllowing Os's:

Due to my work environment I need to implement a whole disk encryption
solution.  I would like to do this without having to rebuild the box,
however I can if necessary.  Does anyone have any suggestions on the
best way to pursue this?

The XP part is easy: TrueCrypt can encrypt in-place.

The modern way of Linux FDE is thru cryptsetup and LVM (you need an
unencrypted /boot partition). In theory, as far as there is enough
buffering, you can also encrypt in-place by dd: read from original
partition device and write to encrypted device mapped on the same
place, but in practice it is much safe and faster to get an external
HDD, copy Linux data to it, setup FDE for Linux, and copy data back.
In any case you will need to restore your boot-loader (remember to
read docs on TC boot-loader), but there is no need for "rebuild".


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