The commands to convert to ImageDisk format are here: viewtopic.php?t=6931īut there are many, many, other disk writers for DOS. Under DOS, I prefer to use ImageDisk, but 'IMG' files must be converted to its format. Writing whole disk images, as found here on Winworld, requires error-free disks.įor standard 1.2mb disks, you will probably have the best luck and fewer headaches writing with WinImage from inside Windows 9x. Otherwise it has bad sectors and can not be used for writing disk images. The formatted capacity of a high density IBM PC 5.25' disk is 1.2mb.Ī freshly formatted 1.2mb disk should report 1,213,952 bytes free in DOS. The '1.6mb' number is marketing bullshit. It is set in the bios properly as B: 5.25 1.2mb. See any jumpers there that could be affecting it? I want to see if there is a software problem first before tearing the computer apart again, though.

Got any clues? I have the installation guide to my exact drive (the Mitsubishi MF504C). I still have the box and it says IBM format and 1.6mb unformatted capacity and 1.2mb formatted, so it seems like they are correct. What's up with my 5.25 drive, is it a jumper in a wrong spot or something? My 5.25 disks are new old stock Verbatim disks which I can read and write to no problem but I do not have any other 5.25 disks besides these to test. Noticed that these images are 1,200kb (exactly 1.2mb) and my 5.25 floppies, when empty read 1.15mb free, so clearly it's failing because there is 50k of missing space. Recently tried to write Windows 3.1 Disk 1 to a 5.25 floppy disk via my Windows 98 machine's newly installed 5.25 drive, and it failed in two different programs, one of them being DiskWrite and the other being a DOS program i cannot remember the name of at the moment.

Ibm formatted floppy disks