Fixed Disk Drive; Diskette Drive Compatibility; Copy Protection - IBM AT 5170 Technical Reference

Fixed Disk Drive
Reading from and writing to this drive is initiated in the same way
as with other IBM Personal Computers; however, the Fixed Disk
and Diskette Drive Adapter may be addressed from different
~
BIOS locations.
Diskette Drive Compatibility
The following chart shows the read, write, and format capabilities
for each of the diskette drives used by IBM Personal Computers.
Diskette 160/18oK
320/360K
Drive Name
Mode Mode
1.2M Mode
5-1/4 In. Diskette Drive:
Type 1
R W F
--- --­
Type 2 R W F R W F
--­
Type 3
R W F R W F
--­
Slim1ine Diskette Drive R W F R W F
--­
Double Sided Diskette R W F R W F
--­
Drive
High Capacity Diskette R W*
R W*
R W F
Drive
R-Read W-Wr i te
F-Format W*-I fad i skette is formatted in
either 160/18oK mode or 320/360K mode and written on by a
High Capacity Drive, that diskette may be read by only a
High Capacity Drive.
Diskette Drive Compatibility Chart
Note: Diskettes designed for the 1.2M mode may not be
used in either a 160/180K or a 320/360K diskette drive.
Copy Protection
The following methods of copy protection may not work on
systems using the High Capacity Diskette Drive:
~ • Bypassing BIOS
Compatibility 9-5