Score:0

Ubuntu

(hd0,gpt2)/dev doesn't have root=/dev/sda2

Ulysse Corbeil

4/8/23, 2:41 AM

I'm at the grub> command line and trying to boot Ubuntu but I can't seem to assign anything to root to make it bootable.

I tried

set root=(hd0,gpt2)

but I need to run this

linux /boot/vmlinuz-5.11.0-41-generic root=?????

What do I set root to?

While on (hd0,2), /dev doesn't have any sda or sdb either... I'm trying to make Ubuntu boot. It's not loading due to /sbin/init not existing. I run linux /boot/vm-linuz-'my-version' and initrd, followed by the boot command and I always end up in "initramfs".

0 + 0

boot

grub2

ChanganAuto

4/8/23, 2:45 AM

Which problem are you trying to solve exactly?

Organic Marble

4/8/23, 2:47 AM

Try `set root=(hd0,2)` i.e. leave out the `gpt` See https://www.linux.com/training-tutorials/how-rescue-non-booting-grub-2-linux/

Score:0

Ubuntu

Zanna

4/8/23, 8:23 AM

I think you are on a hiding to nothing here. If you have tried all the options from GRUB and you are still getting stuck at an initramfs prompt then the kernel will not boot. If /sbin/init can't be found, then probably the filesystem is not getting mounted for some reason.

Usually one can boot from an older kernel, or possibly into the recovery mode for the current kernel from the GRUB menu (hold shift when you turn on your machine to access the GRUB menu). If you've already tried all your kernel versions available, including all the recovery options, you will have to boot from a live system (like an Ubuntu installation USB or Boot Repair USB) and see if you can successfully, do an fsck, run Boot Repair, install a kernel that boots (you may need to choose a specific kernel - I am not sure how your problem arose) to your system, or if all else fails, back up your data onto a separate drive and reinstall.

0 + 0

Score:-1

Ubuntu

Matthias Lenmher

4/8/23, 3:32 AM

if you are on a Gnome or KDE o some desktop environment, you can resolve boot problems with this PPA

Steps:

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install boot-repair

And follow the recommended options, or check advanced options and check options you may perform. Works fine (for me, at least) resolving some device finding and permissions issues

0 + 0

Ulysse Corbeil

4/8/23, 4:26 AM

I'm stuck at bootloader. in grub.

Zanna

4/8/23, 8:31 AM

@UlysseCorbeil I understand that you aren't able to follow these steps and I don't think Boot Repair is likely to help you as your problem seems to be with the kernel and not GRUB, but if you have another computer or a friend who can help you, you can make a [live USB with Boot Repair](https://help.ubuntu.com/community/Boot-Repair#A1st_option_:_get_a_disk_including_Boot-Repair) and give it a try.

Matthias Lenmher

4/8/23, 3:31 PM

This tool can fix boot mount points references scanning all sda looking for OS installations. give a try from live sessoin disk, as @Zanna said =)

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: (hd0,gpt2)/dev doesn't have root=/dev/sda2

TH: (hd0,gpt2)/dev ไม่มี root=/dev/sda2

RO: (hd0,gpt2)/dev nu are root=/dev/sda2

RU: (hd0,gpt2)/dev не имеет root=/dev/sda2

VI: (hd0,gpt2)/dev không có root=/dev/sda2

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