Hi,

I recently built a new stationary PC that came with an UEFI boot loader. Originally I had one SDD and I used parted to create an msdos partition;

parted /dev/sda
mklabel msdos
quit

Then I could use cfdisk to add partitions in the normal manner, after switching to legacy boot in the BIOS the installation booted and everything was fine.

A week ago I added two 2TB hdd to my machine, and it would not boot.
I tried reinstalling with a gpt partition layout (in stead of mbr), using both cgdisk and then gdisk but both methods failed to boot. I then tried to use grub instead of lilo, but that also failed. Finally I tried to follow the README_UEFI.TXT and added an efi boot partition (this should not be necessary though when I only intend to install Slackware right?), the text document said that the installer would detect the efi partition and suggest using elilo instead of lilo, however it didn't, and standard lilo failed to boot.

I am at a loss here..

Does anyone have experience installing Slackware on an UEFI system with multi terabyte hard disks? PS! I am only installing Slackware, so multiboot concerns does not apply here.

Thanks in advance for any help

Yes an EFI partition is necessary and should be detected by the installer of Slackware64-14.1. I'd launch the installer and after the (fake) login (but before running setup), use gdisk or cgdisk to (re) partition the hdd onwhich you want to install Slackware, including an EFI partition.

OK, but it does not detect this. From a forum post (http://www.linuxquestions.org/questi...fi-4175484843/) it seems that ELILO is only suggested if EFI firmware is detected, which I guess its not?
In any case I only get an option of installing lilo which does not boot, and a manual installation of grub does not boot either. The curious thing though is that the system booted just fine as long as I had lilo on an mbr partition on one harddrive, but it refuses to boot in any configuration when I have three...

Could the problem somehow be related to the two extra 2TB harddisks?
PS! Thanks for your quick reply

I installed Slackware with EFI firmware, made GPT partitions with cgdisk but at the end, setup asked me if I wanted to use Lilo, I skiped that and no elilo was offered.. I rebooted and used the USB boot disk I made during the installation, then run elilo.

Misread, nevermind

Hm, couple of problems..

* I cannot seem to manualy run elilo

chroot /mnt
elilo
> sh: elilo: command not found
ls /var/log/packages | grep elilo
> elilo-3.14-x86_64-6

* I cannot seem to manualy boot the installation with a boot disk

huge.s root=/dev/sda1 rdinit=ro
> blablabla... kernel panic!!! call trace ect...

Yup, its eliloconfig (/usr/sbin/eliloconfig)
So check if /boot/efi is mounted before, mine was added in /etc/fstab during install

(edit)
that could be mounted in /mnt/boot/efi too...

OK, well I have /boot/efi and /usr/bin/eliloconfig. What parameters am I supposed to use here? I know, I am being lazy, RTM ect.. There is lots of documentation in /usr/doc/elilo, but I do not feel very confident at the moment, so any tips would be met with deep appreciation!

No parameters needed AFAIK, the script does the elilo install automatically

Hm.. when I run /usr/sbin/eliloconfig I get this error message:
ERROR: System is not running under UEFI.

PS! This is from the installer USB stick, do I need to manualy boot the installed system to do this? (As mentioned I seem to have a problem with getting that to work)

The script assumed it was started from a running system, not an installer image (surelly because of the chroot thing)

Could you try to run eliloconfig without chrooting /mnt (but with efi partition mounted in /mnt/boot/efi)

Well theres no error messages now
However It does not seem to have done anything, /mnt/boot/efi/EFI is empty and no elilo.conf is not found on the system.

Did you see all dialog pages, eg
- INSTALL ELILO
- INSTALL BOOT MENU ENTRY?

No, just

/mnt/usr/sbin/eliloconfig
>

no output

That was not expected
Out of idea here, you do have efi partition... formated as vfat?
How much size has it?

When you type mount (without argument) you see something like this for the efi partition?
I see that eliloconfig can take one paramater: the OS root directory

Maybe use it like: eliloconfig mnt
(I don't think that will change something though)