Re: grub2 BIOS booting iso and code

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On 4/13/22 6:52 PM, Brian C. Lane wrote:
A huge thanks to Thomas Schmitt for posting xorrisofs arguments :)

Here is a lorax PR switching to grub2 for BIOS and changing the layout
of the iso as described in his post:

https://github.com/weldr/lorax/pull/1226

And a Fedora 36 iso:

https://bcl.fedorapeople.org/boot-grub2-f36.iso

I've tested this with:

- qemu bios -cdrom
- qemu uefi -cdrom
- qemu bios -hda
- qemu uefi -hda
- USB stick on uefi PC hardware with SB off
- USB stick on UEFI PC hardware with SB on
- USB stick on Apple hardware UEFI
   2010 Macbook Air and 2012 Macbook Pro
- Media test works on all of the above

I have not tested it on CD or DVD physical media. I have a stack of
blank discs but apparently have unplugged all my drives to use their
SATA ports for SSDs :)

Brian


Initial test with a CD-R and an HP Compaq 8510w are mixed.

It boots to GRUB, but it spins a long time blinking the HDD light displaying nothing but "Welcome to GRUB". It eventually spits out "failure reading sector 0x4f838 from 'hd31'." and "you need to load the kernel first." before finally presenting me the GRUB menu.

Any attempt to launch the installer from the GRUB menu results in the same error messages and return to GRUB menu.

The system dual boots Windows 10, if that's meaningful in some way.
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