IBM Academic System 6152 Quick Reference page 48

3. Remove the diskette drive. To do this, press and hold in the
release latch
0
while pressing and holding up the release latch
II
and sliding the drive out.
4. Store the diskette drive in a safe place for future use.
5. If you are installing an option into the diskette drive B position, go
to page 34, and follow steps 3 through 6.
Installing IBM Options 37