At first I kept my Windows 7 partition(s) to be on the safe side but I removed the partition(s) now because I never used Windows any more. The result is a machine that won't boot into grub/Ubuntu any more. I keep getting the notification that no operating system is found even though I restored grub, as well as the MBR.
Previous partition table:
[ NTFS ][ NTFS ][[ Ext4 ][ swap ]]
- Remove both NTFS partitions
- Resized only the Ext4 partition
- Set the boot flag on the Ext4 partition
- Ran boot-repair from a live disk, as well as restoring grub manually
- Ran boot-repair to restore the MBR since step 4 wasn't sufficient
System: HP EliteBook 8470w Error message:
At first I had the impression it might be an UEFI issue, but this is and always has been disabled in the BIOS.
The only way I can get my system running now is by booting from an USB stick with YUMI, which presents me with an option to boot from the first hard drive. Choosing this option finally gives me the grub boot menu and allows me to boot Ubuntu.
What could the problem be and how can I fix it?