On Fri, Jun 12, 2015 at 07:27:26PM +0200, Gregor Riepl wrote: >Hi Steve > >>> This is actually the responsibility of the debian-cd package, >>> reassigning. > >I did not know that, thank you. >reportbug has a "debian-installer" flag, I assumed it was for this purpose. > >> I'm the guy who's done the work for the mixed-EFI case here. How did >> you get the amd64 installer DVD to boot on your 32-bit UEFI system in >> the first place? That's an important (and harder) part of this. It's >> the reason why I explicitly only added support for mixed-EFI to our >> multi-arch i386/amd64 CDs and DVDs in the first place... > >Actually, that was the easy part. Except for a custom built >grub-efi-i386 and some manual fiddling to find the install disc, I >didn't need to do anything.
Right, OK. Not exactly a common trail, then. :-) >I've been experimenting with a bunch of Intel Bay Trail tablets >lately, and they all come with a full-featured (as far as Atom goes) >64bit Atom CPU. However, since the manufacturers usually only fit 1 >or 2 GB of RAM into their devices, they ship with a 32bit Windows 8, >and consequently, only a 32bit UEFI BIOS. Yup, I know - I wrote http://blog.einval.com/2015/04/23#ready_for_Jessie and the code described there. I've been hacking on Bay Trail systems for a ehile... :-) >All those UEFI BIOSes I've seen so far will boot any 32 or 64 bit Linux kernel >just fine, provided that: >- you have a 32bit EFI bootloader (like grub-efi-ia32) >- you disable Secure Boot or register the bootloader as trusted >- the 32bit bootloader will load a 64bit kernel (which grub-efi-ia32 does) > >When building grub-efi, you also need to make sure that all necessary >modules are compiled in, as grub will refuse to load external modules >in Secure Boot mode. Yup. >I should note though that not everything is running smoothly yet. On one >particular device, the installed system only boots occasionally, usually just >hanging at the Loading initrd... prompt. Further research is necessary. Right. If you'd just tried the multi-arch Debian CD netinst or DVD you'd probably have found that the installation just worked for you without having to fight with your own grub-efi-ia32 build etc.! I'm *not* planning on adding the 32-bit grub binary packages to our amd64 CD images just yet. I'll want to add installer build code to get them booting easily in 32-bit first. Until then, please stick with the multi-arch images. OK? -- Steve McIntyre, Cambridge, UK. st...@einval.com Can't keep my eyes from the circling sky, Tongue-tied & twisted, Just an earth-bound misfit, I... -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
