MS-DOS installation compression
Unknownarchive
The MS-DOS compression format uses the SZDD algorithm to compress a single file into another single file, replacing the last character in the filename with an underscore. It is implemented via the MS-DOS commands COMPRESS.EXE and EXPAND.EXE.
Identify it
| Signatures | 535a444488f02733 at byte 0 (File Formats Wiki)535a444488f0273341 at byte 0 (MS DOS Compression (SZDD)) |
|---|---|
| PRONOM | fmt/462 |
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Open it
No software is recorded for this format.
Convert it
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0Sources
From Just Solve the File Format Problem (File Formats Wiki), PRONOM. Updated 2026-10-24.