Universal Disk Driver

here: used for Atari single and double sided disks

put in config.sys:
	device = unidrv.sys 80 0 2
	device = unidrv.sys 80 0 1

The first line tells to install a driver for the doublesided 
disks on drive 0 (A:) while the second line installs the driver
for the single sided disks also on drive 0 (A:).

You can switch to the different virtual drives by selecting 
the drive letters after your last free drive letter...

so:
 f.e. if you have one harddisk c:

	A: is your DOS-drive
	D: is your double side atari drive (disk in drive a: !)
	E: is your single side atari drive (disk in drive a: !)


