IBM Deskstar 22GXP Installation Manual page 10

IBM storage products
Some BIOSs have a limitation when translating the cylinder, head, and sector information which prevents
them from correctly detecting the capacity of larger drives. If your BIOS is reporting the Deskstar's
capacity incorrectly, use the 15 logical head settings rather than the 16 logical heads, shown below.
Jumper settings
Page 10
IBM Hard Disk Drive Technical Support Center version 1.0