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Questions tagged [floppy]

Shortened from Floppy Disk(FD) or Floppy Disk Drive(FDD). Mainly referring to FDD - a device for reading and writing data to a floppy disk.

A Floppy Disk (FD) is a magnetic storage medium device used with a Floppy Disk Drive (FDD). Floppy technology was common between the 1970's and the 2000's. Floppies have been made in several sizes, notably 8-inch, 5.25 inch, and 3.5 inch.

Tag Usage

This tag should be used for questions about programming floppy drivers, accessing floppy data programmatically, emulating floppy technology with software, and anything else that is on-topic for Stack Overflow and relates to floppy disks, floppy drives, or floppy technology in general. For questions about installing, configuring, troubleshooting, or upgrading floppy technologies (for example, "How do I install an X size floppy drive in my Y computer?"), consider posting your question on Super User or Retrocomputing.SE. For questions about recovering data from old floppy disks, consider posting on Super User, Retrocomputing.SE, or Information Security.SE.

Resources

List of Floppy Disk Formats

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C program fails get a handle to floppy drive

I have a Windows 7 VM with floppy drive (A:) configured. I am trying to read a boot sector of floppy drive into structure. However, every time I run this program, it fails to find the floppy drive. I can confirm that it's accessible. Code: #include…
shellcode
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Check if floppydisk is available or not from an assembly language bootloader

I have a question about how to check if a floppy drive is available or not, using assembly language. I checked if the RAM memory is enough, but I have no idea how to check if a floppy drive is available. I tried this: CMP AH,0 JNE disk_error, but…
Vlad Rain
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Assembly: Unable to read sectors after the first track

As part of my operating system I wrote this read sector function. It takes a sector address to read from a BIOS device id. But when I set to read from sector 19 (Head: 0, Track: 1, Sector 2) the result at 0x1000:0x0000 is likely past that sector (I…
ByteBit
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Loading a .img file to floppy in virtual box

I have a Hello World Program in Assembly language `; ---------------------------------------------------------------------------- ; helloworld.asm ; ; This is a Win32 console program that writes "Hello, World" on one line and ; then exits. …
user3705482
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OS development - converting logical block format to Cylinder-Head-Sector

I am referring BrokenThorn's OS development tutorial, and currently reading the part on developing a complete first stage bootloader that loads the second stage - Bootloaders 4. In the part of converting Logical Block Address (LBA) to…
Cygnus
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Strange results writing to second cylinder floppy image

I'm trying to write to a sector on the second cylinder of a floppy image. For a test I tried writing the numbers 1-9 on the first sector of the second cylinder. The logic would be that, having 18 sectors on a cylinder, and every sector being 512…
Dumitru
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Generate a floppy image on Windows

So, I have compiled an ASM boot program like this : nasm -f bin -o bootsect bootsect.asm And now I need to run the next UNIX command to generate a floppy image from the output, but i'm using MS Windows... cat bootsect /dev/zero | dd of=floppyA…
Maxime R.
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How to read blocks from a floppy with sectors?

I need to read a floppy from a pre OS state and I have a function to read, but it cannot seem to read past the 4th sector... void get_block(blk, buf) int blk; char buf[] { int cyl, head, sector; cyl = ((blk*2) / 18) / 2; head = ((blk*2) /…
Eric Fossum
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What software do I use to put floppies as images on a hard disk?

I still have a large number of floppies. On some of them there probably is source code I don't want to lose. I also don't want to take look at each one individually, as that's going to take a lot of time. What software would be best for copying all…
Stephan Eggermont
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How can I detect a Floppy Disc being inserted and then copy the files?

I have a boat load of old floppy discs that have images on them. I want to copy them, but they have file names that are often duplicated. I'd have a batch file that will copy and rename the files, but I have to run it every time I insert the disc.…
user3306752
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