"We have had reports of some machines having buggy EFI firmware ..."
wow, I hear that a *lot* :-)
On Mon, Jan 27, 2025 at 11:31 AM David Leimbach via 9fans <9fans@9fans.net>
wrote:
> I put rEFIt on my dell and boot it from there
> Sent from my iPhone
>
> On Jan 27, 2025, at 11:29 AM, Paul Lalonde <paul.a.lalo...@gmail.com>
> wrote:
>
>
> Thank Ori and Moody.
>
> I've started walking through making my custom iso and efi partition.
> Reasonably straightforward, though I get this error when building:
> fluxcpu% disk/mk9660 -c9j -B pc/9bootiso -E efi/efiboot.fat -v 'Plan 9
> Front ('^$objtype^')' /tmp/test.iso
> warning: boot image too big; will only load the first 2K
>
> Is it normal for 9bootiso to be 6664 bytes long? Or is there something
> broken in my source tree?
>
> Paul
>
> On Mon, Jan 27, 2025 at 10:18 AM Jacob Moody <mo...@posixcafe.org> wrote:
>
>> On 1/27/25 11:34, Paul Lalonde wrote:
>> > Hi,
>> > I was trying to bring up 9front on another machine I have (Lenovo
>> Thinkstation P620 with a Threadripper Pro 3955WX), and I hang right after
>> the "boot\n" output of the EFI loader.
>> >
>> > Any suggestions on how to debug this? Is there a simple way to just
>> build the EFI and 9fat partitions on a USB stick until I have
>> something that boots far enough to mount root from my cpu server?
>>
>> If I got to "boot" then its possible it actually got in to the kernel and
>> it's the kernel that is hanging.
>> Regardless, if you want to attempt to debug the EFI bootloader you can
>> find it in /sys/src/boot/efi.
>> The efi bootloader will search either the ESP itself for a kernel as well
>> as a 9fat partition.
>> So for just debugging, you can make yourself an ESP and place both the
>> the bootloader and a kernel there.
>>
>> We have had reports of some machines having buggy EFI firmware that
>> forces people to place their kernel
>> on the ESP, so maybe that's worth a try as well? Although I think with
>> those the bootloader complains
>> that its not able to find the kernel and doesn't just hang.
>>
>> If you do want to make yourself a plan9 partition + a 9fat perhaps take a
>> look at what the installer
>> scripts do (/rc/bin/inst/*) to see the process.
>>
>> Thanks,
>> moody
>>
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