Good Gear Guide
In Pictures: Dearly departed - the Windows feature...
Born in DOS 6.0, departed in Windows XP. Back when hard disks were physically huge but logically tiny (and expensive) DriveSpace (née DoubleSpace) worked a bit of magic. It would take the entire contents of a hard disk, compress it, and store it as a single file in the root directory of the disk. When you logged on to Windows (or cranked up DOS), DriveSpace assigned the drive letter to point to the compressed file and took care of system calls that accessed the data. A long series of bugs and highly publicized data loss led to DriveSpace being severely restricted -- to removable media only -- in Windows Me, and to its eventual demise in XP.
In Pictures: Dearly departed - the Windows features that didn't make it