How do I dual boot Slackware 14.2 and Ubuntu 20.4?

cesarsj · 04-28-2021, 12:24 PM

Quote:

Originally Posted by hazel

You'd have to use efibootmgr to make elilo the first choice, not grub. In any case, let's start by establishing which program you were actually using before you installed GRUB because there seems to be some confusion. Was it ELILO in EFI native mode or was it LILO in legacy mode?

ELILO in EFI native mode. I also remember that whenever I updated the Slackware kernel before, I had to make a copy of vmlinuz to /boot/efi/EFI/slackware, otherwise the keyboard and mouse would stop working.

colorpurple21859 · 04-28-2021, 05:21 PM

as root post the output of

Code:

parted -l

and slackware /boot/grub/grub.cfg if you prefer to use grub.

cesarsj · 04-28-2021, 07:03 PM

Quote:

Originally Posted by colorpurple21859

as root post the output of

Code:

parted -l

and slackware /boot/grub/grub.cfg if you prefer to use grub.

Model: ATA ST1000LM024 HN-M (scsi)
Disk / dev / sda: 1000GB
Sector size (logical / physical): 512B / 512B
Partition table: gpt
Disk options:

Number Start End Size File system Name Options
1 1049kB 316MB 315MB ntfs Basic hidden data partition, diag
2 316MB 420MB 105MB fat32 EFI system partition boot, esp
3 420MB 555MB 134MB Microsoft reserved partition msftres
4 555MB 229GB 228GB ntfs Basic data partition msftdata
9 229GB 229GB 1049kB ext4 bios_grub
10 229GB 230GB 538MB fat32 msftdata
11 230GB 230GB 538MB fat32 msftdata
12 230GB 560GB 330GB ext4
8 560GB 661GB 100GB ext4
7 661GB 947GB 286GB ext4
5 947GB 951GB 4000MB linux-swap (v1)
6 951GB 1000GB 49.7GB ext4

Model: SD SS08G (sd / mmc)
Disk / dev / mmcblk0: 7948MB
Sector size (logical / physical): 512B / 512B
Partition table: msdos
Disk options:

Number Start End Size Type File system Options
1 1049kB 7948MB 7947MB primary fat32 boot

colorpurple21859 · 04-28-2021, 08:18 PM

What is on partition 10 and 11?

A bios-grub partition is only needed if booting a gpt type drive in csm/legacy mode and using grub2 as the boot loader, not needed if using lilo.
post the ouput of

Code:

cat /sys/firmware/efi

cesarsj · 04-28-2021, 08:21 PM

Quote:

Originally Posted by colorpurple21859

What is on partition 10 and 11?
post the ouput of

Code:

cat /sys/firmware/efi

root@darkstar:/sys/firmware/efi# ls
config_table efivars/ fw_platform_size fw_vendor runtime runtime-map/ systab vars/

which file?

colorpurple21859 · 04-28-2021, 08:30 PM

If you run the command as is it will say "/sys/firmware/efi is a directory" if it exists and no such file if it doesn't exist. That was just to verify that you was booting in uefi mode. I have answered several threads about grub where the op thought the system was booting in uefi mode, but was actually booting in csm/legacy mode.

cesarsj · 05-01-2021, 06:16 PM

Quote:

Originally Posted by colorpurple21859

If you run the command as is it will say "/sys/firmware/efi is a directory" if it exists and no such file if it doesn't exist. That was just to verify that you was booting in uefi mode. I have answered several threads about grub where the op thought the system was booting in uefi mode, but was actually booting in csm/legacy mode.

I preferred to delete all partitions, except for Windows, and install Ubuntu 20.04 LTS again. It is better as it is now. I thank you all for your help.