Hi,
I've noticed many systems (at least HP, Acer, Asus P67 and Z77 boards, and
users reporting consistent too) when booting a CD-RW or DVD+RW disc using
shim to load grub which then goes to load the kernel ends up with an error
reading sector 0x600 on device fd0. as a test, I modified grub logic to
better pick the device as a test and got it to read error on sector 0x600
on cd0. I also output the UEFI error code which is 7 (device error). The
interesting thing is you can boot that same kernel file in legacy boot mode
(just choosing the different cd boot option from the device boot selection
menu) using isolinux no problem so nothing wrong with the disc. Also it's
always sector 0x600 on all the systems it fails on. Another interesting
fact is if you create a CD-R, DVD-R or DVD-RW (burned like DVD-R which puts
it in that mode) it will boot fine in UEFI mode.
Any ideas? I would guess it's probably a bug in the UEFI firmware from
whoever is providing HP, Asus and Acer their UEFI BIOS? isn't the firmware
supposed to be based on the EDK?
Anyway, any idea?
TIA!! (that's Thanks in Advance)
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