Editing Tandy 2000 (section)

=== Media ===
The Tandy 2000 used quad-density 5.25" floppy disks formatted at 720k. This format (80-track disks at the double-density bitrate) was not used by PC-compatibles, although some CP/M machines and the [[Commodore 8050]]/8250 drives had them. Normal PCs of the time had 40-track double-density floppy drives and could not read quad-density due to the drive heads being too wide to read the narrower tracks. 1.2&nbsp;MB 5.25" drives (introduced on the IBM AT) could read quad-density disks because they were 80-track and had thinner heads. Various utility programs for DOS existed that could read nonstandard formats such as the Tandy 2000's disks. Much like 1.2&nbsp;MB drives, the Tandy 2000 had problems reliably writing 360k PC disks due to the smaller heads not completely erasing the tracks and causing 40-track drives to become confused by residual magnetic signals on the outer edge of the track. Tandy distributed the computer with a utility called PC-Maker that would read and format 40-track disks in the 2000s 80-track drives, and were readable in drives on ordinary PCs.

The floppy controller on the Tandy 2000 is compatible with 3.5" double-density 720&nbsp;KB floppy drives.

As of May 2019, there is an abandonware site (winworldpc.com) that has available for download a disk image for the latest version of MS-DOS for the Tandy 2000. It includes instructions for using the IBM 1.2&nbsp;MB 5.25" disk drive (80-track) to create a system disk bootable in the Tandy 2000 5.25" drive.<ref>{{cite web|title=Microsoft MS-DOS 2.11 [Tandy 2000 OEM] (02.02.00) (5.25-DSQD 720k)|url=https://winworldpc.com/download/40e280b9-7b22-18c3-9a11-c3a4e284a2ef|website=WinWorld|accessdate=December 28, 2017}}</ref> This procedure can also be used to create a bootable 3.5-inch system disk using an ordinary 720&nbsp;KB 3.5-inch PC drive; this will boot a Tandy 2000 if its 5.25" boot drive has been replaced with a double-density 720&nbsp;KB 3.5 inch PC drive.