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When I use HMAC-RIPEMD-160, is the size of the header encryption key only 160 bits? 
 
No, TrueCrypt never uses an output of a hash function (nor of a HMAC algorithm) directly as an 
encryption key. See the section ‘
Header Key Derivation, Salt, and Iteration Count‘ 
for more 
information. 
 
 
How do I burn a TrueCrypt container larger than 2 GB onto a DVD? 
The DVD burning software you use should allow you to select the format of the DVD. If it does, 
select the UDF format (ISO format does not support files larger than 2 GB). 
 
 
Can I use tools like chkdsk, Disk Defragmenter, etc. on the contents of a mounted 
TrueCrypt volume?
 
Yes, TrueCrypt volumes behave like real physical disk devices, so it is possible to use any 
filesystem checking/repairing/defragmenting tools on the contents of a mounted TrueCrypt volume. 
 
 
Does TrueCrypt support 64-bit versions of Windows? 
Yes. 
 
 
Can I mount my TrueCrypt volume under Windows, Mac OS X, and Linux? 
Yes, TrueCrypt volumes are fully cross-platform. 
 
 
Is it possible to install an application to a TrueCrypt volume and run it from there? 
 
Yes. 
 
 
What will happen when a part of a TrueCrypt volume becomes corrupted? 
In encrypted data, one corrupted bit usually corrupts the whole ciphertext block in which it 
occurred. The ciphertext block size used by TrueCrypt is 16 bytes (i.e., 128 bits). The mode of 
operation used by TrueCrypt ensures that if data corruption occurs within a block, the remaining 
blocks are not affected (for more information, see the section
 
Modes of Operation). See also the 
question ‘
What do I do when the encrypted filesystem on my TrueCrypt volume is corrupted?
’