As indicated in another message, I'm trying to install Plan9 (9front)
on an AM08Pro, that is a ACEMAGICIAN with an AMD Ryzen 9 8cores, 16 Gb
of memory, and a 512Gb NVMe disk (M.2).
Before attempting to PXE boot (that should work) I'm trying to
understant why an USB thumb does not work.
I have installed an UEFI Shell (that has to be called Shellx64.efi
despite the "Shell.efi" mentionned in the BIOS menu) in the Windows
EFI system partition. From the BIOS menu, I can select "try to run an
UEFI shell found in one of the filesystems" to explore the board.
Concerning USB, there are 3.0, 3.1 and 3.1 USB-C ports (even Windows
fail to recognize some USB devices depending on where they are put,
and it seems that connecting a keyboard+touchpad combo, that uses one
connector, but two instances, invalidates the next USB connector; so
the whole USB stuff looks suspiciously fragile).
Nonetheless, an USB thumb (as well as a CDROM connected via an USB
connector) is recognized as CDROM(0x1).
I think this may be the problem: the firmware is using 2048 blocks
(ISO9660 FS) while the information in the MBR table relates to 512
blocks. With BIOS allowing legacy compatibility, this may perhaps work
(MBR make the booting switch to 512 bytes blocks), but this will not
if the block size is fixed as 2048?
I haven't look at the UEFI code, but does this ring a bell for someone?
--
Thierry Laronde <tlaronde +AT+ kergis +dot+ com>
http://www.kergis.com/
http://kertex.kergis.com/
Key fingerprint = 0FF7 E906 FBAF FE95 FD89 250D 52B1 AE95 6006 F40C
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