Truecrypt will ask you to enter your password after rebooting your computer before encrypting your operating system, DiskCryptor will not, it assumes you entered the passphrase correctly twice as asked and did not make any mistake. You can benchmark ciphers in Truecrypt too but since only AES can be used for full disk encryption there is no point in doing it. I'm sorry I can't provide the detailed steps for the multi-boot set-up, it's been a while since I experimented with it, but this should give you some guidelines to start with.DiskCryptor download is a tiny 750Kb, after installing it you will need to reboot the computer, you might notice that its 64bit drivers come signed by the ReactOS foundation a non for profit organization assisting open source projects not able to acquire an expensive signing certificate to distribute Windows 64bit drivers.Įncrypting my Windows 7 Home Premium 64bit OS, with a fairly powerful Intel i5 2200Hz (quad core) absorbed very low CPU, a steady 7% of the available resources, it took me 20 hours to encrypt a 1TB hard drive, it would have been considerably quicker using just the AES algorithm instead of the cascade algorithm I selected.ĭiskCryptor lets you know how long it will take to encrypt your operating system, you can still work with your computer while it is being encrypted, I advice you to temporarily disable power management in Windows and set it to always on, Windows will not notice the hard disk being encrypted and send the OS into hibernation mode believing the computer is inactive, if this happens full disk encryption will stop and only resume once you switch the computer back on, I have found this problem to occur with both DiskCryptor and Truecrypt, more of a Windows problem than to do with the full disk encryption software.ĭiskcryptor lets you benchmark the encryption ciphers ( Tools>Benchmark) if you have a low spec CPU and are in a hurry you can choose the cipher that performs best in your system, AES was the quickest for me, by quite a lot of difference in contrast with Twofish and Serpent, once the OS has been encrypted it doesn’t matter what cipher you used to encrypt it, performance will be the same. This could also work, without having to install GRUB on the partition. If my memory serves me well, TC will make a back-up of the original boot-loader but can't remember if there was a setting that lets you boot the original one once ESC is pushed. The TC boot-loader should then be configured to try boot other partitions if ESC is pushed, in effect giving control to GRUB when it finds it at the beggining of the partition where you installed it to. The boot-loader should be installed on the MBR, and GRUB installed on some primary partition (/boot, let's say). I'm unable to find documentation for the boot loader, but I remember it was simple to set-up to work with Linux. iso back-up to a CD/DVD this time, as it will let you use the media to boot into your Windows, in case you overwrite the BL again. Now that you're safe, you should be able to re-install the boot-loader by using TrueCrypt from your Linux and configure it as you did before. This is very important to have, because if the header is lost / corrupt, it practically means your data is lost forever! I suggest you test first that your data is intact, and once you're able to access it, make a backup of the volume's header. Note that you have to toggle the "system volume" option when mounting. If you boot into another system with TrueCrypt installed (you can use your Linux, there is a TrueCrypt version for Linux as well), you could mount your partition and access the data. What this means is, your data should still be accessible. The first track of the system drive and/or on the TrueCrypt Rescue For system encryption (see theĬhapter System Encryption), the last 512 bytes of the first logicalĭrive track are read into RAM (the TrueCrypt Boot Loader is stored in The first 512 bytes of the volume (i.e., the standard volume header)Īre read into RAM, out of which the first 64 bytes are the salt (see From the TrueCrypt encryption scheme, system volume header resides at the end of the volume, and should still be there, even if you have overwritten the boot loader.
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