DoubleSpace and DriveSpace

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File Format
Name DoubleSpace and DriveSpace
Ontology
Extension(s) .001, others
Released 1993

DoubleSpace, later named DriveSpace, is a disk compression utility for DOS and Windows.

It was included with MS-DOS v6.0-6.2 as DoubleSpace, dropped from v6.21, then added back (with some changes) to v6.22 as DriveSpace. It is also integrated into some versions of Windows.

It is derived from DoubleDisk by Vertisoft Systems.

Format details

The compressed volume is in the form of a file hosted on a non-compressed hard disk. Possible names for the file include DBLSPACE.001 and DRVSPACE.001.

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