17 votes
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How to convert Amiga DMS to ADF?

From some quick research, WinUAE (a popular Amiga emulator) supports reading a DMS file just like an ADF. So you could probably mount it and then save it back as ADF. Also, according to the ADF Opus ...
  • 2,863
15 votes
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I made a sector image of a Windows 95 partition, but it won’t boot. Why?

When you used dd, did you capture it from the first physical sector? Or did you merely grab the volume of interest? If you did it on \\.\Volume{$$$$$$$$-$$$$-....}, then you only got C:, not the ...
  • 1,337
14 votes
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What are D64, T64, D71 and D81 files?

These are disk- and tape images files for the Commodore 64 and computers using the same floppy drives and disk formats, like the VIC-20, or the Commodore 128. D64 are single-sided 5.25" disk images (...
  • 8,084
12 votes
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What's the difference between DOS-ordered and ProDOS-ordered disk images?

The reasons are partly technical and partly historical. The basic Apple II disk image formats are unadorned and unstructured. The files just hold a copy of the disk data, from the first track to the ...
  • 7,631
12 votes
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How to transfer AT&T 6300 ".360" disk images onto physical floppies

These are headerless sector dumps of the 360KiB disks, and can be written directly to the appropriate floppies. Since you’re using Windows 98, I suspect the best tool to do is ImageDisk. You’ll need ...
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11 votes
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Writting DSK images onto a 3″ floppy for Amstrad/Sinclair computers

I used the dsk2cdt2disc tool to convert a .dsk image to a .cdt tape file. I can then play this tape file via an app (or convert it to audio data) and use a standard Amstrad tape cable to play the ...
10 votes
Accepted

How can I tell if an Apple II disk image is bootable?

The bootprocess itself don't know any 'not bootable' exit. If a disk can be read, the first sector is loaded at 800 and then jumped to 801 (800 holds a counter for the number of sectors to read by the ...
  • 178k
10 votes

Writting DSK images onto a 3″ floppy for Amstrad/Sinclair computers

I've written various programs that may help, if the DSK files don't make use of copy protection. If you can get files onto the +3 via the ZXMMC, you can use DU54 at http://www.seasip.info/Cpm/...
  • 5,902
10 votes

What are the most common Apple II disk image formats and what hardware disk drive emulators can use them?

Another partial answer. .d13 is a format for storing the 13-sector floppy disks that were used on the Apple II before mid-1980, by Apple OS's before before DOS 3.3; i.e. Apple DOS 3.1, 3.2 and 3.2.1, ...
  • 101
10 votes
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How can I programmatically determine whether an Apple II .dsk disk image is a DOS .do image or a ProDOS .po image?

You can't tell if a .do/.po disk image file is in DOS order or ProDOS order unless you recognize something on the disk. If it has a DOS 3.3 or ProDOS filesystem, it's pretty easy. Otherwise... not ...
  • 7,631
10 votes
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Understanding the DMK disk image file format used by TRS-80 emulators

I support DMK in my MSX emulator, and bear in mind that it's a bit of a confused file format. It has a bunch of design deficiencies, and was clearly tightly coupled to the program that originally ...
  • 32.6k
10 votes
Accepted

Why is QEMU cutting off the last cylinder of the disk image?

QEMU is not at fault here. The discrepancy comes from the BIOS. When I create a disk image as described in the question, then attach it to a QEMU virtual machine and use the info qtree command in the ...
  • 17.7k
9 votes

What are the most common Apple II disk image formats and what hardware disk drive emulators can use them?

I can offer a partial answer only: .dsk, .do and .po are all the same file format: sector contents only, implicitly ordered. The difference is that DOS 3.3 and Pro-DOS use different orderings, so it'...
  • 32.6k
8 votes

Methodology for imaging Atari disks

Well, after spending some time googling last night I have discovered something called SIO2PC. This is probably old news to the Atari fans out there, but in case anyone is having the same initial ...
  • 8,476
8 votes
Accepted

How to read Microware OS-9 RBF Filesystem under Windows / Linux?

ToolShed seems to be the current maintained OS9/descendants disk manager tool. It's not a file browser but works on the command line. Are you sure your disk image is a valid RBF image, though? ...
  • 17.6k
8 votes

What are D64, T64, D71 and D81 files?

Since I've been writing code to interact with various systems' disk image formats over the past few weeks I'd like to add a little more information that's not in the current answers. Disk images and ...
  • 5,033
8 votes
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What floppy disk format and layout and what disk image format are used for the Coleco Adam?

A partly speculative answer, working backwards from the source code of Marat Fayzulin's ColEm, it appears to be a fixed-size sector dump. On line 52 of EMULib/FDIDisk.c you can see confirmation of the ...
  • 32.6k
7 votes
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Can someone help me get xROAR to read files? (M6809/TRS-80 ColorComputer)

You can manage CoCo disk images quite easily with MAME's imgtool. I've assumed you want to use RS-DOS on a CoCo 2, launching xroar via: xroar -default-machine coco2bus To make a blank, single-sided ...
  • 17.6k
7 votes
Accepted

Create an Amiga hard disk image

I successfully dumped data from disk to image. I used two programs from Aminet: http://aminet.net/package/disk/misc/xfs http://aminet.net/package/util/cli/bcopy First need to mount DEV device from xfs ...
  • 251
7 votes

How can I use ImageDisk (.IMD) images with VirtualBox, WinImage, etc.?

libdsk can convert IMD to a raw disc image. dskconv -otype raw file.imd file.img or in versions prior to 1.5.5: dsktrans -otype raw file.imd file.img
  • 5,902
7 votes
Accepted

How can I use ImageDisk (.IMD) images with VirtualBox, WinImage, etc.?

Keir Fraser’s Disk Utilities include an analysis and conversion program, disk-analyse, which can convert to and from ImageDisk files (among others). To convert an ImageDisk file to a plain MFM disk ...
  • 98.3k
6 votes

How can I view an Error Info Block in a D64 image?

The purpose of those error blocks is to emulate copy protection. It's not enough to do error recovery. You'd need to make copies in the G64 format which is made from the raw GCR stream. The error ...
  • 868
6 votes

How can I view an Error Info Block in a D64 image?

AFAIR the error info is just an attached block with one byte per sector of the imaged disk, tlling if that sector did produce a read error in the first place. Within the plethora of tools to handle ...
  • 178k
6 votes

Creating a PDP-11 bootable disk

There is no specific 'format' required. On a real PDP-11, what happens at bootup depends on what kind of boot PROM you have installed. In general, for disk-type devices the convention is to load the ...
  • 11.3k
6 votes

Copying disk image from HP 9122D drive

(Some background: the 9122D uses Sony OA-D32W floppy drives. Here's a service manual and a discussion about repairing these drives.) If you want a perfect 1:1 image of the floppy disk at the magnetic ...
6 votes
Accepted

Is there any tool to convert .DSK to mp3 file?

c2t converts from 140K disk images to audio files, though only AIFF or WAV files. It might take some experimentation to get MP3 encoding settings that work using the Apple II's LOAD command, though. ...
  • 17.6k
6 votes
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Compucolor 2 emulator CCEmu's `.ccvf` disk format

I played around a bit with it, and it seems the solution is to basically emulate the full UART behaviour, in particular in regards to detecting start bits. Instead of framing statically by 10 bits, we ...
  • 2,543
5 votes
Accepted

Writing 800k Mac floppy images for 1.44M-equipped Macs using Linux

Here's what I've been able to determine: A short filesystem on a floppy should work fine, as long as the blocks are in the right order. If the image you're using is a raw image (819200 bytes exactly,...
  • 1,029
5 votes

Copying disk image from HP 9122D drive

You can read the floppy in any FDD (mechanically compatible). The problem lies with FDC compatibility. Each FDC controller looks for a specific pattern on the track to find out where the sector ...
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