I have a dual boot with Windows 10. I was unable to boot Ubuntu from disk. I have a bootable USB stick and that worked. I booted from the USB and then booted a recovery Ubuntu option in Grub. Then, I was able to get into my Ubuntu partition. I was updating my system when the machine just shut down. After which, I ran Boot-Repair.

Now, I can boot from my Ubuntu partition, but once I enter my password, the screen is all messed up and I can not Login. It doesn't seem to recognize my password. Also, now, I can not boot from my USB Ubuntu Stick. I made a brand new Ubuntu ISO image and that will not boot either. (A reinstall previously fixed the screen problem.)

I have tried changing the boot order in the BIOS. That does not help.

The link to the Boot-Repair log is above. Any help would be greatly appreciated.

  • Any abnormal shutdown corrupts system. You need to run fsck on any ext4 partitions and may need chkdsk on NTFS partitions from a Windows repair disk. askubuntu.com/questions/642504/… And then if in middle of updates you need to boot recovery mode and finish updates or chroot into system to finish updates. askubuntu.com/questions/253243/… – oldfred Oct 9 '18 at 20:44

I can't explain what happened exactly. I was studying my machines operation and at one point, while trying to login, I got the same messed up screen but, after a while I did get into my machine. The icons (like the wifi icon) were blanked out and I could not access my Windows drive but, I was able to run an update. After the update, the system seems to be working fine; I can boot from my USB stick and; access my Windows drive from my Linux partition. But, I still cannot boot Ubuntu from my DVD.

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