On 12/18/2013 03:44 PM, Bruce Dubbs wrote: > Dan McGhee wrote: >> On 12/18/2013 02:08 PM, loki wrote: >>> On Wed, 2013-12-18 at 09:24 -0600, Dan McGhee wrote: >>> >>>> Are you trying to do this on a UEFI system? >>>> >>>> Dan >>>> >>> Nope. I'm not even sure that this old rig is EFI capable :) And secondly I'm >>> too lazy to learn it since for the servers that I use 4 primary partitions >>> is >>> the most I'm going to use and the other gizmos and gadgets that EFI has are >>> also overkill. :) And I'm somewhat old school, I don't believe that the >>> computer itself should have a full fledged operating system embedded on it. >>> I'm from the Kickstart Disk generation. Basic Input Output System, just get >>> it >>> to the state where the operating system can take the computer over and then >>> vanish. But at the end I'm very reluctant to use something that is embedded >>> on >>> the machine and has the touch of MICROSOFT on it. :p >>> >> You and I have similar attitudes, esp with regard to the "M-word." :) From >> the >> research I did I concluded that the UEFI thing is here to stay--doesn't >> necessarily mean "secure boot" either. In fact, that's the first thing I >> turned >> off with my new machine. What I like is not being limited to four primary >> partitions. > You can do that in a BIOS based system. You can use GPT without UEFI. > I think there may be an issue if you have a boot partition that ends > above 2T, but I always recommend a small partition at the beginning for > /boot. You're right about the GPT without UEFI. But, AFIK, the user must *make* the partition behave with the GUID's. But, again AFIK, if the firmware is MBR based, you're still limited to four primaries. > > The trick for grub users is to get it to "look across" the >> partitions without having to have a "signed" grub.efi file. And as soon as I >> get my LFS system to the point I want to reach, I'm going to do another build >> and see if I can make that happen. > Doesn't UEFI systems have a 'Legacy' mode where that stuff is not needed? Yes. If you install GRUB2 this way, its files are written to the "MBR protected layer," and then the partition behaves like it has MBR-BIOS.
This is what I have gleaned from getting my LFS to boot in a UEFI environment anyway. Thus far I have been able to boot only by employing the "efi stubs" of the kernel. I'm almost finished with my write up on how to do that. I don't want to quit researching because it's interesting. I would like to learn how to employ GRUB2 and all its capabilities in this environment. I think it's possible by manipulating the secure variables of EFI, but I have to learn how to do that. Dan -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
