Happy New Year ! and thanks! to all who replied. If memory serves me correctly, there will be a hole at the bottom LEFT (when viewing the back of the disk), for disks with 1.44 MB capacity, and if no hole exists on bottom LEFT, then the floppy is 720 KB. If you hold the floppy so you are looking at the back, then there will be a hole on the bottom LEFT that is used to tell the drive what the floppy disk's capacity is. Please note that the 3.5 inch floppies came in various capacities (the two most common were 720 KB and 1.44 MB. and you will be able to write to the floppy. If that's the case, then just put a small piece of opaque tape over the "hole" (where the slider switch was). Sometimes the little "slider switch" on 3.5" floppies were removed (to make the floppy permanently read-only). If the movable part of the tab is down, the disk is write-enabled. If the movable part of the sliding tab is up, so that there's a hole in that corner of the disk, the disk is write-protected. If you hold the disk so that the edge that goes into the drive is at the bottom, this should be in the top left corner. On one corner, there should be a sliding tab. To tell if a floppy disk is write-protected (locked), look at the underside of the disk (the part that's on the bottom when you put the disk in the drive). I assume you know this, but to make sure. I assume you are talking about the 3.5" floppies. In such case, is probably that the diskette is physically damaged.Are you talking about 5.25" and 8" floppy discs or 3.5" floppies? Mkfs.fat: unable to get diskette geometry for '/dev/fd0' Troubleshooting Unable to get diskette geometry # mkfs.fat /dev/fd0 mkfs.fat 4.1 () fluxvis AUR: Open source software to visualise flux images.kryoflux AUR: For the proprietary Kryoflux adapter.fluxengine-git AUR: For the Flu圎ngine open hardware project.greaseweazle AUR: For the Greaseweazle open hardware project.Depending on which such hardware adapter you have one of these packages may be relevant: These adapters also require specialised software to control them. While the adapter itself connects to the (modern) PC using USB, it needs to connect to a classic floppy drive with a ribbon cable on the other side. Note that these do not work with USB floppy drives. This is possible as the floppy controller handles most of the low level tasks rather than the drives directly. It is possible to read and write non-native floppy formats (such as Amiga disks on a PC floppy drive) using special hardware adapters that works on the magnetic level (commonly referred to as "flux images"). Mount # mount -t vfat /dev/fd0 /media/floppy Supported formats can be listed using ufiformat -i /dev/sd xįor classical floppy controllers on the motherboard fdformat could perform this, which used to be part of util-linux, but is no longer included in the package by default and you would have to rebuild it yourself. Note that USB floppy drives in general only support very few formats (unlike traditional floppy controllers). This is performed on a level below file systems.įor USB based floppy drives use ufiformat AUR:Īdditional flags can be used to adjust which format to use, by default it uses the same as is already on the disk. This would create various markers on the disk for sectors and tracks. When it comes to floppies (and some very early hard drives) it was possible to perform a "low level format". Note that USB based floppy drives will show up as /dev/sd x for some varying value of x. By default, all these tasks need to be performed as root. In all examples is assumed that /dev/fd0 is the Linux device for the floppy drive. Here are the commands needed to perform the most common tasks. In addition, for low level formatting on USB attached floppy drives you will need ufiformat AUR. There are two packages in the Arch package repository related with floppy disks: In such case, it could be loaded with the following command: The floppy module might not be loaded by default. USB floppy drives do not need this as they appear as standard USB mass storage devices. The module floppy is used as a driver for floppy drives (for classical floppy controllers). Most of the floppy drives should be supported by stock kernel. Floppy disks are read and written by a floppy disk drive (FDD).Ĭommon tasks with floppy disks are described bellow, with available tools to accomplish them. (Discuss in Talk:Floppy disks)Ī floppy disk, also called a diskette, is a disk storage medium composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic carrier lined with fabric that removes dust particles. Reason: Cover fdformat(8) and recovering a "dead" floppy.
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