I have an encrypted TrueCrypt volume with dynamic size (maximum 4GB).
I had about 900MB used on that volume (and so the "size on disk", or the physical volume size on my "real" hard drive was also about 900MB).
Now I have deleted some stuff from that encrypted volume, and freed about 150MB of space (and when I go to properties of the TrueCrypt drive, Windows says that its capacity is 4GB and used space is about 750MB).
BUT: when I open the properties of the physical file (where the TrueCrypt volume is stored), it says that the size on disk is still about 900MB - it has not reduced at all!
Is there some way to also reduce that physical size of the file on disk? I mean, if some space that was used in the drive is now free, why it still occupies the physical space on my hard drive?