IBM manual 15

Drive	and	Diskette		Compatibility		Matrix
The	following		table	provides	identification information for
3.5-inch		drives.
Diskette				Identifying
Drive				Mark
3.5-Inch - 1.44MB				1.44 on the eject			button
3.5-Inch		-	2.88MB	2.88	on	the eject button

The following table provides compatibility information for 3.5-inch diskettes and 3.5-inch diskette drives.

Diskette	1.44MB	2.88MB
Capacity	Drive	Drive
1.0MB	Read/Write	Read/Write
2.0MB	Read/Write	Read/Write
4.0MB	Not Compatible	Read/Write

The following		table provides		identification information for
5.25-inch diskette drives.
Diskette			Identifying
Drive			Mark
5.25-Inch	-	360KB	(External)Asterisk		on	bezel
5.25-Inch	-	1.2MB	(Internal)1.2	on	the	eject button

The following table provides compatibility information for 5.25-inch diskettes and 5.25-inch diskette drives.

Diskette	360KB			1.2MB
Capacity	Drive			Drive
360KB	Read/Write			Read/Write
1.2MB	Not	Compatible		Read/Write
Note: A 360KB	diskette		written	to or formatted on a
1.2MB	drive	can	be read reliably only on a 1.2MB
drive.

4 IBM Mobile Systems HMM