Two encryption questions

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Two questions that are puzzling me...

1) If I create a virtual encrypted drive in an external device with
Truecrypt in Windows, could I then decrypt that same virtual
encrypted drive with Truecrypt in Linux?

2) Is is possible to have a whole operating system (Windows
or Linux) encrypted in a RAID 0 set up? What about a RAID 1
set up? If anyone knows how to do this please advise
software name or provide some link.


Decrypt with Caesar ROT13

Re: Two encryption questions

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You will need to use a file system for the drive partition where you
save the TrueCrypt file so you can read it from Windows and Linux.

You will need to install TrueCrypt on both Windows and Linux.

Truecrypt uses a password for authentication.  I don't see why you
can't get into the container file if you use the same password whether
under Windows or Linux.

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You might want to read through the group's posts first to see if your
question has already been answered.

DriveCrypt and other whole-disk encryption products may do what you
want.  Prepare for the performance penaly of encrypting the OS,
something you may want to reconsider whether or not you need to
protect (since it can be obtain from lots of other places, like
stores). has some
info.  Simply Googling on '+"full disk" +encryption' will find lots of
possibilities and information.

Software or hardware RAID?  If software, the RAID drivers aren't
loaded until the OS gets loaded.  A whole-disk encryption product
sitting in the MBR bootstrap area loads *before* the OS loads so the
software-based support for the RAID setup won't be there yet.  Might
work with hardware-based RAID yet the drivers needed for the
controller aren't loaded until the OS loads, so how is the MBR
bootstrap program going to see the drives connected to the RAID
controller?  If the drives in the hardware-based RAID setup can be
seen by simply booting into MS-DOS with no drivers loaded for the RAID
controller (chip or card) then the MBR bootstrap program should work
with those drives okay.

Re: Two encryption questions

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What is that supposed to mean?


Thank you

Re: Two encryption questions

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You're the one wanting to install or use Linux so you are the one that
should know that file systems it will support (for whatever "flavor"
of Linux you install) that are also supported by Windows.  Both
operating systems have to support the same file system, the file
system on the partition where you will be storing the TrueCrypt
"container" file, and the file that you want to access from that file
system whether you boot under Linux or Windows.  FAT and VFAT are
probably supported by whatever flavor of Linux that you chose to use.
At ,
read the 4th paragraph.  You can get software to provide transparent
support for NTFS partitions under Linux, like from Paragon.  You could
put the TC container file on an ext2 or ext3 partition which Redhat
understands but you would need to add an IFS (installable file system)
in Windows to let you read that ext2/3 partition.

I assumed you would want to access the file from either Windows or
Linux.  Could be you boot into one or the other OS on the same and
then access the file; i.e., maybe you are dual- or multi-booting
between different operating systems.  Could be you have each OS
running concurrently, like with Virtual PC or for 2 networked hosts,
one Windows and one Linux, and want both to access the file.  I don't
know if TrueCrypt supports concurrent opens of the same container file
but you didn't mention that requirement, so I also assumed that you
wanted to access from one OS at a time.

Could be you want it only on the Linux host but access it from a
Windows host and might use Samba to provide the file access from
Windows to Linux.  You install TrueCrypt on your Linux host (running)
and the Samba server also on your Linux host, and then use the Samba
client on Windows (running) to access that .tc file across the
network.  You have both hosts running at the same time and access the
file across the network.  Then you don't care what file system is used
on the host where is the .tc file.  See .

Too much of your setup is unknown to make absolute statements about
what will work for you.  If you have both hosts running, one Windows
and one Linux, and want to access the .tc file at the same time (via
network or virtual machines), remember that TrueCrypt is manipulating
a file and there will be problems with concurrent access from multiple
operating systems trying to open simultaneous handles on the same
file.  According to , you will need to
open the .tc file in read-only mode; i.e., TrueCrypt is not really
designed for networked or concurrent access.

Re: Two encryption questions

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Few links for your 2nd questions:

1) (Wikipedia article)

2) A list of full/whole disc encryption products:
I haven;t any whole/full disc encryption products that support RAID
configuration. Usually FDE products are for laptop / mobile device
protection, where theft of the device is of concern.

3) Full/whole disk encryption mailing list:

Re: Two encryption questions

Looking at the list @

The only option for RAID setup is:

or Seagate's Momemtus FDE.2 drive that encrypt everything by default
that goes on platter:

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