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A comment on Triple Density Floppy, Anyone?. Parent comment

Re:Triple Density Floppy, Anyone? by romanhn on Tuesday November 05, 2024 @04:47AM (#42050098)
Sounds like DoubleSpace (later renamed to DriveSpace), which was built into MSDOS and early Windows versions.

https://en.m.wikipedia.org/wiki/DriveSpace

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Re:Triple Density Floppy, Anyone? by mkl on Tuesday November 05, 2024 @04:52AM (#42050121)
That was totally different. DoubleSpace made a virtual drive in a file and did software compression/decompression with a driver during writes and reads. It was a clone of Stacker, and both were slow as heck (but hard drives were only 40MB, so sometimes it was worth it).
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