But I encountered two problems:

1. BIOS setup can neither change FDD setting nor auto-detect FDD removal, thus every POST prompts error and ask for "F1" to resume. I tried to disable FDD controller, but no use.
2. BIOS setup for HDD "head per clinder" is fixed to 15, resulting strange HDD geometry of 240 logical heads instead of 255 detected by other notebook/HDD-case. This will cause HDD partition table mismatch problem and data loss in systems other than this notebook.
After weeks of searching, it seems to me the only way to solve the problem is to modify the BIOS using "Phoenix BIOS Editor", enable the "read-only" items, and flash back to the notebook.

Now the progress is blocked, because after extracting the ROM file modules, BIOS Editor 2.0.18E always stopped at "analyzing BCPs...", Prompting:
Run-time error '9':
Subscript out of range
I've been searching Phoenix and other sites for many days, but can not find any related article on this error.

Can anyone please help me on this? Or any other way I can modify the BIOS settings?
HP Omnibook XE2 DB BIOS 2.00 file ftp://ftp.hp.com/pub/softlib/software1/ ... b2k200.exe, please use winimage to extract all.rom file from the disk image.