IBM RT PC Problem Determination Manual page 66

S t e p 40. D i s k e t t e
2-38 Problem Determination Guide
The diagnostic diskette may not be correctly inserted in the drive.
IS TH E D IS K E T T E IN S E R T E D PR O P E R L Y ?
YES CONTINUE to next page.
Go to "Step 3. Loading Diagnostics" on page 2-11 and
NO
try the procedures again.