Boot problem

[nilsA]

Long time now, Bionic Beaver running just fine, no problems at all.

Then suddenly, I cannot boort without using the "Advanced" option.

If I boot the normal way, I get (and I have to retranslate this from Norwegian, so bear with me ...

Error: Did not find the file 4.15.0-58-generic
Error: You have to read in the kernel first

I am using the "Grub Customizer" utility to get the start priority (Dual boot with WIN10) as I want it.

I heve tried (in Grub Customizer) to use the "install to MBR" option, ands the "Save" option. No change.

So, while I can live with the "Advanced" option for booting - it is about the elegance and things working like they should do. Anyone can help me to sort this out?

[Don B. Cilly]

Well, do you have the file? What does it say if you type
ls -l /boot
?

And when you
sudo update-grub
?

P.S. The string to search for out there is: you need to load the kernel first.

[nilsA]

Well, do you have the file? What does it say if you type
ls -l /boot
?

And when you
sudo update-grub
?

P.S. The string to search for out there is: you need to load the kernel first.

Thank you. It has been quite a while since I did serious booting things, so bear with me.

The problem is that there is no vmlinuz-4.4.093 in /boot as below? So there is an kernel upgrade gone wrong?

Then, what should I do?

nils@xxxxxxx:~$ ls -l /boot
totalt 190892
-rw-r--r-- 1 root root 1246835 aug. 8 2017 abi-4.4.0-91-generic
-rw-r--r-- 1 root root 217278 juli 2 18:41 config-4.15.0-55-generic
-rw-r--r-- 1 root root 217254 aug. 6 12:45 config-4.15.0-58-generic
-rw-r--r-- 1 root root 190356 aug. 8 2017 config-4.4.0-91-generic
drwxr-xr-x 6 root root 4096 aug. 22 22:27 grub
-rw-r--r-- 1 root root 56534029 aug. 8 00:02 initrd.img-4.15.0-55-generic
-rw-r--r-- 1 root root 56573310 aug. 13 22:45 initrd.img-4.15.0-58-generic
-rw-r--r-- 1 root root 44204499 juli 20 23:33 initrd.img-4.4.0-91-generic
-rw-r--r-- 1 root root 182704 jan. 28 2016 memtest86+.bin
-rw-r--r-- 1 root root 184380 jan. 28 2016 memtest86+.elf
-rw-r--r-- 1 root root 184840 jan. 28 2016 memtest86+_multiboot.bin
-rw------- 1 root root 4051807 juli 2 18:41 System.map-4.15.0-55-generic
-rw------- 1 root root 4055363 aug.

6 12:45 System.map-4.15.0-58-generic
-rw------- 1 root root 3884798 aug. 8 2017 System.map-4.4.0-91-generic
-rw------- 1 root root 8294136 juli 2 20:03 vmlinuz-4.15.0-55-generic
-rw------- 1 root root 8302232 aug. 6 19:41 vmlinuz-4.15.0-58-generic
-rw------- 1 root root 7097936 aug. 8 2017 vmlinuz-4.4.0-91-generic
nils@xxxxxxx~$

nils@xxxxxxx:~$ sudo update-grub
[sudo] passord for nils:
Sourcing file `/etc/default/grub'
Lager grub-oppsettsfil …
Fant linux-bilde: /boot/vmlinuz-4.15.0-58-generic
Fant initrd-bilde: /boot/initrd.img-4.15.0-58-generic
Fant linux-bilde: /boot/vmlinuz-4.15.0-55-generic
Fant initrd-bilde: /boot/initrd.img-4.15.0-55-generic
Fant linux-bilde: /boot/vmlinuz-4.4.0-91-generic
Fant initrd-bilde: /boot/initrd.img-4.4.0-91-generic
Fant Windows 10 på /dev/sda1
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Fant Windows 10 på /dev/sda1
Fant linux-bilde: /boot/vmlinuz-4.15.0-58-generic
Fant initrd-bilde: /boot/initrd.img-4.15.0-58-generic
Fant linux-bilde: /boot/vmlinuz-4.15.0-55-generic
Fant initrd-bilde: /boot/initrd.img-4.15.0-55-generic
Fant linux-bilde: /boot/vmlinuz-4.4.0-91-generic
Fant initrd-bilde: /boot/initrd.img-4.4.0-91-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
ferdig
nils@xxxxxx~$

[Don B. Cilly]

Oh, I don't know.
It complains about not finding 4.15.0-58-generic, but update-grub finds it.
Try
sudo apt autoremove
Then re-update-grub and reboot...

Thing is, I hate grub.
So someone else will probably have a better solution, but...
...me personally, I get to that point, I install rEFInd and forget grub problems

[claydoh]

If you still have to use the advanced menu, which line is the one that works, and what does that line say?
What does the line in the main section say?

Actually, it woulds be eaier to see which kernel you are actually booted to:
$ uname -r
The 4.4.0 kernel is a holdover from the upgrade from 16.04 Xenial, and I wonder if somehow you have been booting to that, and is now broken as the vmlinuz-4.4.0 file being missing, as you noted.

[nilsA]

]Oh, I don't know.
It complains about not finding 4.15.0-58-generic, but update-grub finds it.
Try
sudo apt autoremove
Then re-update-grub and reboot...

Well, that's what started the problem ...

[nilsA]

If you still have to use the advanced menu, which line is the one that works, and what does that line say?
What does the line in the main section say?

Actually, it woulds be eaier to see which kernel you are actually booted to:
$ uname -r
The 4.4.0 kernel is a holdover from the upgrade from 16.04 Xenial, and I wonder if somehow you have been booting to that, and is now broken as the vmlinuz-4.4.0 file being missing, as you noted.

nils@********:~$ uname -r
4.15.0-58-generic
nils@********:~$

The menu (As it is seen in Grub Customizer, translaged back to English by me):

Windows 10 (loader) (on /dev/sda1)
menuentry / script: as-prober / default name: Windows 10 (on /dev/sda1)

Kubuntu
menuentry /script: custom

Advanced options for Ubuntu
submenu

Ubuntu, with Linux 4.15.0.58-generic
menuentry /script: linux

Ubuntu, with Linux 4.15.0.58-generic (recovery mode)
menuentry /script: linux

(And then the same for 4.15.0.55 and 4.4.0.91, ending with the Memory test options)