Can not boot after installing

[steve7233]

As RedGreen925 has pointed out, you're still doing a BIOS install. A BIOS install to GPT is possible; oshunluvr did that for many years, and perhaps still does.

If that really is what you want, BIOS/GPT, Kubuntu will not mind, but rather than an ESP (EFI System Partition) you need a "biosgpt" partition. And I would not be surprised if the new calamares installer does not do BIOS/GPT properly; to use calamares I imagine you'd have to

- "Try Kubuntu"
- start a konsole, and run sudo calamares
- not specify an ESP (it complains but lets you proceed)
- run grub-install manually from the konsole, specifying the boot device

However, in 2024 I'm finding it difficult to imagine that you don't want a UEFI install. And to get that you have to boot the installer in UEFI mode.

IIUC secure boot is not much relevant.

I can't figure out how to do a UEFI install.

[steve7233]

I have tested this a few times now - at least in my tests BIOS/GPT always worked (I followed the method that the Calamares installer displayed and used Manual Partitioning), see:
https://www.kubuntuforums.net/forum/...822#post678822

No flags? I thought the installer said to set the Bios-grub flag. That's what I did. Maybe that is why it won't work. Why such a small partition Don't you need more room for the NVIDIA driver and anything else you need drivers for the boot or is that installed to /?

[Schwarzer Kater]

This is what I wrote:

• click on Free Space --> [Create] --> enter 8 MiB in Space --> select unformatted in File System --> select bios-grub in Flags --> [OK]
• click on Free Space --> [Create] --> check: Space = rest, File System = ext4, Flags = none selected --> select / in Mount Point --> enter e.g. Kubuntu in FS Label --> [OK]

bios-grub for the 8 MiB, no flags for an exemplary ext4 "/" partition.

NVidia drivers et al. don't reside in the 8 MiB partition for ("legacy") BIOS/GPT boot - I was not talking about UEFI with an ESP ("/boot/efi") there…

[steve7233]

This is what I wrote:


bios-grub for the 8 MiB, no flags for an exemplary ext4 "/" partition.

NVidia drivers et al. don't reside in the 8 MiB partition for ("legacy") BIOS/GPT boot - I was not talking about UEFI with an ESP ("/boot/efi") there…

I have 3 drives the plan is Steam1 = my steam library and not reformating on a 4 TB, A separate /home on a 2 TB. A / on a 1 TB - the 8 MiB Bios-Grub. Do they all need to be GPT or just the 8 MiB? All are Sasung 860 SSDs. I will reformate the / and /home. In the future I will do a mostly clean install except for /home and Steam1 so I always have a new clean system. Also if I try other Linux via virtualization then I always have the same /home.

[Schwarzer Kater]

So your computer's mainboard has a "legacy" BIOS?
If SSD # 3 (1 TB) is only for "/" and you can reformat the whole drive, then you can use a GPT, the 8 MiB unformatted partition for GRUB/BIOS an the rest for "/".
This does not effect any other drives - you will just have to integrate any other partitions you want to use from other drives one way or the other.


PS:

[…] Also if I try other Linux via virtualization then I always have the same /home.

I don't know what you are planning to do and how you are planning to do this, but this is certainly a topic for another thread…

[steve7233]

A 5th attempt and another grub-install failure!

[steve7233]

Is there any way to look up the motherboard model from Linux or do I have to open the case again? I want to go to the Asrock website to look up the MOBO manual. I know it's UEFI but apparently, it is in legacy mode currently. I need to find out how to switch it back. Maybe the installer can't install correctly. I read something about CSM but I can't find that in the Bios program.

[Schwarzer Kater]

sudo dmidecode --type baseboard should do.
If not, try a general sudo dmidecode and look through the output.

[steve7233]

sudo dmidecode --type baseboard should do.
If not, try a general sudo dmidecode and look through the output.

kubuntu@kubuntu:~$ sudo dmidecode --type baseboard
# dmidecode 3.5
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASRock
        Product Name: B75M-DGS R2.0
        Version:                      
        Serial Number: M80-3C008700243
        Asset Tag:                      
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis:                      
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0


​

Thanks. I copied the part of the output that had the name of the board. Pasted onto a new browser tab. Pressed enter. and Google presented me with links to the manual.

[steve7233]

I found CSM is in the ACPI menu. Maybe now I can get it to install.

[steve7233]

This looks better:
Notice it says EFI. It never said that before, I hope I finally figured it out. I'll try for the 6th time maybe it will work finally.

[steve7233]

It took 6 tries but I finally got it to install and boot. I hope I don't forget what I did for the next version. Now I have to create a new thread for the no audio devices detected problem! https://www.kubuntuforums.net/forum/...pon-first-boot

[jlittle]

It took 6 tries but I finally got it to install and boot.

Congrats for your tenacity.