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Solve : How to read Floppy 1.44 compressed with Doublespace (1.8MB)?

Answer»

Hi to everyone,
I have an issue I need to recovery info from a floppy disk (1.44MB). This floppy was compressed with doublespace (in my opinion) and there is also a label on the floppy with this text: "1.8MB". UNFORTUNATELY who compressed floppy can not help me anymore. I have MS DOS 6 and 6.22 (bought in a flea market) emulated with vmware. I have TRIED a little bit but I need help to understand the right procedure that i must follow.

I hope that someone can help me because i'm not so good with MS DOS.

Thx in advance

RytxRytx, the compression issue can be a problem for anyone. Notice what the following has to say about the compression progrm once used.
Reference:
https://en.wikipedia.org/wiki/DriveSpace
Quote

Microsoft's decision to develop DoubleSpace and add it to MS-DOS was probably influenced by the fact that DOS-based operating systems from other manufacturers (IBM and Novell) had started including disk compression software in their products.[citation needed]
If you run into some troubles hard to understand, consult the above article. Because of some legal issue, the product could not continue to be offered by Microsoft. This lead to some problems.
In worst case, you will need the exact version number of MS-DOS and use that version to recover the data. However, the article above CLAIMS that you should not have any issue  if you use Windows 95. Myself, I don't know if that is true.
The article also states the Windows 98 can read the compressed files.

Another article about read files from a compressed floppy using Windows xp.
http://www.tomshardware.com/forum/81262-45-compressed-floppy

BTW: Older programs to handle compression wee written in the Real Mode. And that means you can not use them in 64 bit versions of Windows. Don't let this detail confuse you.
What files are on the disk?

A Doublespace or Drvspace compressed diskette/disk will contain files such as DBLSPACE.001 or DRVSPACE.001.

If it doesn't contain files like this it is not compressed.


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"1.8MB". Unfortunately who compressed floppy can not help me anymore. I have MS DOS 6 and 6.22 (bought in a flea market)

Curious what you expect to find on the disk if and when you access the data and what you PLAN to do with the information?How does it show in Explorer when you open it ? ?


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