Look at IBM Support page at this URL [Unwrap long line!]:
A hard disk drive boot error (error codes 1962 and
I999030X) can have the following causes.
The startup drive is not in the boot sequence in
configuration. Check the configuration and ensure the
startup drive in the boot sequence.
No operating system installed on the boot drive. Install
an operating system on the boot drive
The boot sector on the startup drive corrupted. The drive
must be formatted.
Attempt to access and recover (back-up) the failing hard
Format the hard disk drive using the operating systems
The drive is defective. Replace the hard disk drive.