HelpWindows7.com

[mike25]

Has anyone tried Truecrypt on Windows7?
I have installed it, but could encrypt my c: drive
I get the following error:
"Error: Windows is not installed on the drive from which it boot. This is not supported."

[lambert]

I believe this is because Windows 7 installation creates a small 100-200MB partition on which it stores its boot files. Does anyone have any experience with using TC on Win7?

[melvin]

Yes you are right truecrypt cannot encrypt the system partition or drive on Windows 7 because Windows 7 creates a small (200MB) partition on which it stores its boot files. If you want to use truecrypt, then you have to move these boot files to the same partition as the Windows installation. But this is not possible in Windows because the 200MB partition cannot be mounted or read from. So you have to use a Linux live CD to mount the two partitions and copy the files.

So first burn the Live CD ->Rt click on my computer->click on manage to open Computer Management ->mark your C: drive as Active.

Reboot and start on your Linux live CD. Open up some kind of shell
$ sudo -s

Then run the following commands to copy the required files to your Windows partition.

# mkdir /mnt/boot
# mkdir /mnt/c
# mount /dev/sda1 /mnt/boot
# mount /dev/sda2 /mnt/c -t ntfs-3g
# cd /mnt/boot
# cp -r Boot /mnt/c/
# cp bootmgr /mnt/c/
# cp BOOTSECT.BAK /mnt/c/

Reboot back into Windows and you should be able to encrypt your drive.

[felix]

I was very disappointed the first time when I tried TrueCrypt’s on Windows 7.
Fortunately, the next time I installed Windows 7. I just avoided the small partition(200M) to be automatically created during installation then I just deleted the 200MB boot partition. After that Windows 7 is installed and booted from the same partition.

After installation I installed TrueCrypt and encrypted my Windows partition. It works great!

[luke]

Thus in order to avoid the 200M partition to be automatically created during installation, here are some rules to follow when choosing where to install Windows 7:
(1) You should not install Windows 7 to an unallocated space or to an unpartitioned hard disk because no warning pop-up or confirmation is asked, and setup will straight away and directly create partition 200 MB of disk space as special partition without notification.
(2) You should create all the necessary partition(s) and format the partition(s) before installing Windows 7.