Thanks in advance for any help you guys can provide.
I have a Toshiba L50-B-243. I installed Ubuntu 17.10 choosing to erase the entire disk and previous partitions (Windows 10 & KDE Neon).
After install I got the dreaded "No bootable device - please restart" message. Using the Live USB I ran boot-repair, but it told me there was an error when repairing. Here is the log: http://paste.ubuntu.com/25825329/
I've tried re-installing from the Live USB to no avail. I've checked the BIOS menu and SecureBoot is definitely inactive, and in the config menu UEFI is selected. I've double-checked that the Live USB is definitely using EFI.
I have found another error but I don't know if it is related: I am unable to save any changes made in the BIOS menu - after restart all the changes have reverted. The only things that successfully save between restart are changes to time and date.
Any help you can provide would be greatly appreciated as my laptop is basically a brick at the moment.
I've tried several more things based off suggestions from around the web, but each solution hits an error :-(
First, I tried to manually update grub using: sudo update-grub /dev/sda
and I receive this message: /usr/sbin/grub-probe: error: failed to get canonical path of `/cow'
Next I ran efibootmgr and found out that: BootCurrent: 0000 Timeout: 0 seconds BootOrder: 2001,0004,0003,2003,2002 Boot0000* EFI USB Device (SanDisk) Boot0001* Realtek PXE Boot0002* Realtek PXE Boot0003* Windows Boot Manager Boot0004* ubuntu Boot2001* EFI USB Device Boot2002* EFI DVD/CDROM Boot2003* EFI Network
So following advice from another answer on askubuntu I tried to change the boot order (sudo efibootmgr -o 4,0,3) so it would load ubuntu first and got this error: Could not set BootOrder: Interrupted system call
If anyone has any more suggestions, I'd appreciate hearing them. Thanks again for any help!
EDIT: So, tried a solution to the "failed to get canonical path /cow" error, got a different error instead...
ubuntu@ubuntu:~$ sudo mount /dev/sda2 /mnt ubuntu@ubuntu:~$ sudo mount /dev/sda1 /mnt/boot ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt /dev/sda Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: will not proceed with blocklists
Could it be there is something wrong with my hardware at this point? I've tried so many proposed solutions to this problem, with each solution simply presenting a new error that needs to be fixed. Is my whole laptop junk?
So I've now tried all the relevant solutions I can find on askubuntu (and the rest of the web) some of which appear to have completed successfully. However, as soon as I reboot, I get right back to the "no bootable device" screeen.
By adding '--force' I managed to get grub to update and install - no change.
I created a new Ubuntu 17.10 Live USB using the Ubuntu Startup Disk Creator on a new pendrive, but my laptop will not boot from it (same screen as always "no bootable device"). Then, I used Etcher to create a new KDE Neon Live USB on the new drive, but my laptop will not even start that (still claims there is no bootable device).
The only thing I can do is load up the Live USB that I originally used to install Ubuntu.
What has happened to my laptop? I'm really out of ideas and options now. Please, anybody that can help, please help me!