Hi there, I have a 500Gb external USB HD which I want to encrypt with TrueCrypt to work with a Win7 computer(s). I only need a single encrypted volume on it. My options are (I believe): 1) format a single NTFS partition on it, create a large TrueCrypt file-container that nearly fills it, and format it internally as NTFS or FAT32. 2) format a single NTFS partition (of FAT32?) on it, then encrypt the partition wit TrueCrypt. 3) encrypt the the entire drive with TrueCrypt What are the technical differences between the three? I almost understand option 1) and its consequences (slightly? slower performance, no deniability, no automated mounting on plugging the device, but less potential for things to go wrong and easier to recover if they do). But what is the difference between 2) and 3), and why one would be better than the other? I was able to find some advise on the forum, but mostly based on personal opinions - nothing really explaining the differences clearly. One of the reasons I'm asking (and trying to simplify it) is that previously I had a USB HD partitioned into small unencrypted FAT32 partition and larger NTFS partition, encrypted with TrueCrypt and formated as NTFS internally). Things went wrong at least 3 times over 2 years using it as a backup (corrupted FAT in either one or the other partitions or corrupted TC header). I was able to recover most of the data, but I couldn't figure out why it was happening. I'd like to simplify it, hoping that it won't happen again - but in a process I started getting interested with the device vs. partition difference as well. Cheers!