I had an old hard drive I wanted to use as a secure, cross platform file transfer device, so I thought of TrueCrypt and UDF. Unfortunately, TrueCrypt for MacOS only supports formatting drives as Mac OS Extended and TrueCrypt for Windows only supports NTFS and FAT32. I ended up using TrueCrypt for Mac OS and the Mac’s command line formatting utility.
- Login as an Administrator
- Connect the drive you want to protect with TrueCrypt
- Open TrueCrypt and create a TrueCrypt Volume like normal, but select "None" when asked to select a filesystem
- Wait for the encryption to complete
- From TrueCrypt, click the "Select File…" or "Select Device…" to select your newly encrypted volume and click "Mount"
- Enter the password and any other authentication credentials required for the Volume. Check "Do not mount" before clicking "OK"
- Back in the main TrueCrypt window, select the Volume and click "Volume Properties…"
- Record the Virtual Device value. In this case "/dev/disk3"
- Open a Terminal window
sudo newfs_udf /dev/disk3to format the TrueCrypt volume with the UDF filesystem
- From now on, the UDF filesystem will automatically be mounted when mounting the TrueCrypt volume on Window or Mac OS