For formats which work in several drive types, FDGETDRVTYP returns a name which is appropriate for the In order to reenable autodetection, you have to issue an FDCLRPRM.įDGETDRVTYP returns the type of a drive (name parameter). The media information will not be lost when the media is changed. The media information will be lost when the media is changed.įDDEFPRM sets the media information of a drive (geometry of disk in drive). Ioctl(2) calls are supported by fd devices:įDCLRPRM clears the media information of a drive (geometry of disk in drive).įDSETPRM sets the media information of a drive. If you are not sure, don't create device entries for those formats, so as toĭrive-independent device files which automatically detect the media format and capacity:ġ12 Description fd special files access the floppy disk drives in raw mode. Usual 40/80 are supported should not damage it, but no warranty is given for that.

Warning: If you use formats with more tracks than supported by your drive, you may cause it mechanical damage. To this base number, add the drive's number on its controller and 128 if the drive is on the secondary controller. For each device type (that is, combination of density and track count) there is aīase minor number. Minor numbers encode the device type, drive number, and controller number. Root.floppy (i.e., user root, group floppy) and have either mode 0660 (access checking via group membership) or mode 0666 (everybody has access). Floppy drives are block devices with major number 2.

Why do i need to format my floppy disk