Questions tagged [floppy-disk]

Use, restoration and imaging of floppy disks; low-level formats of floppy media. Consider [file-system] for high-level formatting.

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Can floppy disks have sectors laid out without being formatted?

Using the Amstrad CPC disk data format as an example, the sector IDs are C1, C6, C2, C7, C3, C8, C4, C9, C5. Is it possible to lay these IDs on a track without actually formatting each sector or does ...
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17 votes
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What were practical uses of SCSI floppy drives?

I've always been fascinated by the rarity and elitism of such devices. However, from a practical standpoint, I don't understand why such low transfer rate device ended up in a bus commonly used for ...
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18 votes
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Is it possible to adapt a standard PC floppy drive to work in an IBM PS/2?

I have three different IBM PS/2 machines and all of them are in perfect working order—except for the floppy drives. None of the floppy drives will read disks, which means all I can do is key in BASIC ...
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10 votes
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Transferring files between Commodore PET and IBM PC

Suppose you have two early eighties computers, a Commodore PET with 8050 disk drive and an IBM PC with its 5.25" disk drive. Is there a way to transfer files between them? Not machine code programs, ...
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6 votes
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Are floppy disks used for MS-DOS setup still needed after you install the operating system?

I currently only have 11 disks available. One of the disks is a reserve, so I will not use it unless I have to. That brings us down to 10 disks. Disk 0 - Blank, I will use this for the installation ...
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14 votes
1 answer
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Using a 360k (DD 5.25") floppy with Windows XP?

My PC XT clone went up in smoke (literally) the other day. I salvaged the half height 5.25" double density floppy drive though and dropped it into an old 1.8 ghz AMD tower I had laying around. Plan ...
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21 votes
2 answers
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Is there a better way to the 6 disks install of Windows 3.1

I want to install Windows 3.1 on my MS-DOS 6.22 Machine. I have the 6 disk images. But I only have 1 or 2 spare Floppy disk that I can write the disk images onto. One way I can think of is to write ...
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29 votes
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How did MS-DOS assign drive letters in the case of more than two floppy disk drives?

The IBM PC BIOS had provisions for up to four floppy disk drives, by virtue of returning the number of floppy disk drives in a two-bit field plus a none/some flag (allowing for reporting values of 0, ...
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12 votes
2 answers
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Which Apple floppy drive is compatible on both Apple IIc and Macintosh

I have an old Apple IIc (not Plus) and an old Macintosh Plus (1MB RAM). I want to buy an external 3.5 inch floppy drive that works on both machines, that way I don't need two different drives around ...
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9 votes
2 answers
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Apple II: ProDOS partitions on floppy disks?

On the Apple II using ProDOS, was it possible to create partitions on a floppy disk? Would it be possible to have two or more partitions on a 140k 5.25" or 800k 3.5" disk? (The question here is not ...
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11 votes
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What happens when a floppy track contains multiple sync words?

This question is specifically aimed to the Amiga hardware. Let's assume a floppy track is read via DMA using sync word to trigger the start. Let's also assume the track contains the sync word ...
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2 votes
1 answer
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What systems used hard sectored floppy disks?

Which computer systems used hard sector indexing of floppy disks? Background: On 5 1/4" and 8" disks there is a hole punched into the disk used for optical timing to locate the start of sectors. ...
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5 votes
0 answers
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Can a modern 1.44MB floppy drive work with an Amiga 2000? [duplicate]

Can an Amiga 2000 (or even A500) be made to easily work with modern 1.44 MB drives? Meaning, is it just a matter of pin mappings or are the drives just too incompatible? I realize there are other ...
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14 votes
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How to build a workstation to handle bulk quantities of floppy disks?

I need to handle bulk quantities of floppy disks, where I archive their contents, then recycle them by formatting them for use on old Amiga/Atari/MS-DOS computers. I have a 3.5" floppy disk drive ...
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6 votes
1 answer
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Can the Gotek floppy emulator be made to work with classic Macs?

The Gotek floppy emulators are really popular in the retro scene. I have one modified (firmware update) to work with my Amiga 500. Can one be made to work with any of the classic line of Macintosh ...
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13 votes
4 answers
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Writting DSK images onto a 3″ floppy for Amstrad/Sinclair computers

For a project I'm working on, I need to write some disks to test on my Amstrad CPC 6128. I've got some 3″ blank disks, and all my Amstrad computers (CPC and PCW) have 3″ disks, as well as my Spectrum +...
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31 votes
6 answers
14k views

Can I image Amiga floppy disks on a modern computer?

Is there any way of reading Amiga floppy disks to a PC hard drive? Can I use a standard floppy drive with a firmware program that will translate it? Do I need an external drive or a working Amiga ...
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8 votes
2 answers
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Repairing/Lubing/Fixing Amiga 500 floppy drive

I have acquired an Amiga 500 that seems fully functional, but the floppy disk drive seems to have mechanical issues. I could get it to read a few floppy disks until the last one wouldn't pop out when ...
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9 votes
1 answer
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How do I add multiple internal drives to an Amiga 2000?

The default configuration of an Amiga 2000 has a single internal floppy drive. Can I add a second internal floppy drive? Can I add a third or fourth drive too?
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13 votes
3 answers
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Only "Drive A:" detected with two floppy disk drives

I am trying to repurpose an old Acer Aspire M1641 to copy/format bulks of 3.5'' floppy disks. I think it's one of the last generations of computers to have a 34 pin floppy disk drive header as it also ...
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10 votes
3 answers
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How can I copy software which is too large for one Atari ST floppy disk?

I have downloaded the STOS game creator from the STOS download page. I'm trying to copy the software from my computer to a floppy disk formatted on an Atari ST, but I get an error message saying the ...
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8 votes
2 answers
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Transferring data from Spectrum +3 disk to tape/.TAP etc

I've recently found a number of my own programs (very old!) on Spectrum +3 discs, and I'm about to get hold of a working +3. Assuming the discs are readable, I'd like to transfer the programs (mostly ...
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12 votes
2 answers
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Bootable floppies lock up with floppy drive connected via USB adapter

I am currently trying to mount a 3.5'' floppy disk drive in a modern computer. What I did is that I bought a 34-pin floppy drive connector to external USB adapter so that I can connect it to my ...
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12 votes
2 answers
1k views

Replacing the floppy drives in my Amiga 3000

My Amiga 3000 is starting to show its age, and recently one of the two internal floppy disk drives appears to have given up the ghost... I'd like to replace the drive but the A3000 case doesn't have ...
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28 votes
2 answers
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Why did connecting the IBM PC 3.5" FDD backwards cause the problems it did?

When the 3.5" FDD was introduced for the IBM PC and compatibles (or possibly earlier), someone made a decision to make the data cable between the controller and drive unkeyed. This, of course, meant ...
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15 votes
4 answers
9k views

Where can I find an external 8-inch floppy disk drive?

Where can I find an external 8-inch floppy disk drive? I have some data I would like to retrieve from a really old 8-inch (200 mm) floppy disk, but have no working computer than has a drive to read ...
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11 votes
1 answer
838 views

HxC floppy emulator on Amiga 1200, second virtual drive disappears after reboot

I've recently purchased a HxC/Lotharek SD Card floppy drive emulator. It's working well replacing DF0: but I'm seeing some odd behaviour with its emulation of DF1:. On the first boot after power-up, ...
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55 votes
9 answers
21k views

How long will floppy disks maintain data integrity?

This was on CNN today: The U.S. is still using floppy disks to run its nuclear program Which led me to read through this article: Think the floppy disk is dead? Think again! Here’s why it still ...
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13 votes
3 answers
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Writing 800k Mac floppy images for 1.44M-equipped Macs using Linux

If you have Macintosh filesystem image of an 800k boot disk, but your physical Mac has a 1.44M SuperDrive, how can you produce a physical disk that can boot that Mac?
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30 votes
4 answers
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Absolute maximum number of nibbles on an Apple II floppy disk track?

The Apple 2's disk drive controller and 5¼" floppy disks have the following metrics: The disks is spun at (roughly) 300 RPM (Revolutions per Minute), which means it takes = 1000 ms/sec / (300 RPM / ...
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31 votes
5 answers
5k views

What were the differences in floppy disk formats between Amiga and IBM/PC compatible computers?

The capacity in Amiga Old File System format (OFS, OS version 1.x) was 840KB, with the Fast File System ("FFS" (!)) introduced for OS 2.x onwards able to store 880KB. The PC format stored 720KB on the ...
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35 votes
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What modification is required from a PC floppy for use in Amiga?

Around the end of the time of Amiga popularity, obtaining a replacement Amiga floppy drive was a nuisance, while PC drives were ubiquitous and cheap. One could install a PC drive in Amiga after ...
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31 votes
1 answer
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How does "bit-slip" copy protection work?

Some Apple II 5.25" floppies used a special pattern of bytes that could not be automatically detected by disk copying software. How could the pattern be invisible to disk copiers but detectable by ...
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26 votes
4 answers
4k views

Cleaning 5¼" floppy drives

Going to the store is treacherous for me. So I prefer doing stuff at home, including cleaning up 5¼" floppy disks with only home supplies. Unfortunately, I do not know how or which materials/chemicals ...
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33 votes
6 answers
2k views

Dumping and archiving C64 disks

Doing spring cleaning with family, I found some old C64 disks. These are really old and no one knows what to do with them. Archiving or dumping them seems to be options but we are unsure how to do so ...
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