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DMS ZIP
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Convert DMS to ZIP

Can you convert DMS to ZIP?
Verified by Adam B.· reviewed by FE Editorial ·updated Sep 5, 2026
QUICK ANSWER
Is it possible to convert DMS to ZIP?
No - not a direct conversion.

Decompress the .dms to an .adf disk image using xDMS (xdms u disk.dms), then mount the .adf in an Amiga emulator such as WinUAE to access the files inside. There is no meaningful way to convert DMS directly to ZIP.

No direct path
Also to ZIP: KGL · IMAZINGAPP · LOCKER

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert DMS to ZIP?

DMS and ZIP serve entirely different purposes. ZIP is a general-purpose archive of files and folders. A .dms file stores an entire Amiga floppy disk sector by sector in the Amiga OFS/FFS filesystem, which no standard operating system reads natively. Re-wrapping a .dms in ZIP adds another compression layer on top of already-compressed data; unzipping it still leaves you with a .dms requiring an Amiga emulator, and the individual files inside the disk remain inaccessible.

How to convert DMS to ZIP

xDMS OPEN-SOURCE

Run xdms u disk.dms to decompress the Amiga disk image to a .adf raw image, then mount the .adf in an emulator to access the individual files inside.

WinUAE FREE

Load the .dms directly as a floppy drive in WinUAE to access the disk's files inside the emulated Amiga environment without a separate decompression step.

About these formats

.DMS Amiga Disk Masher System Image

A DMS file is a compressed snapshot of a Commodore Amiga floppy disk, created by the Disk Masher System in the early 1990s. Open it with WinUAE (Windows) or FS-UAE (Mac/Linux), or first…

Open .DMS details →
.ZIP ZIP Archive

A ZIP file is a compressed archive that stores one or more files in a single smaller package. On Windows, macOS, iOS, and Android you can open it without installing anything - just…

Open .ZIP details →

Quality & what to watch

  • Zipping a .dms produces a .zip of almost the same size because DMS data is already compressed; unzipping it still leaves you with a .dms, not usable files.
  • The files inside a .dms image use the Amiga OFS/FFS filesystem, which mainstream operating systems do not read natively - an emulator or specialist Amiga filesystem tool is required.
  • Verify the file is genuinely an Amiga DMS image by checking that it starts with the bytes DMS! - the extension is shared with unrelated software.

Frequently asked questions

Why won't 7-Zip or WinRAR open my .dms file?
DMS is an Amiga-specific format; 7-Zip and WinRAR do not understand its structure or Amiga disk track layout - use xDMS to decompress it first.
Can I open the files inside a .dms without an emulator?
Not easily - the disk uses the Amiga OFS or FFS filesystem; the practical path is to decompress with xDMS and then use an Amiga emulator such as WinUAE.
How do I know if my .dms file is actually an Amiga disk image?
Check the first four bytes: a genuine Amiga Disk Masher image starts with DMS! (hex 44 4D 53 21); if absent, the file is something else.