This is a continuation of my "unmet dependencies" thread https://ubuntuforums.org/showthread....0#post13903890
Impavidus and rsteinmetz....
For the last few weeks I have been attempting to eliminate possible hardware issues that might be preventing the reinstall of 16.04 in my dual boot laptop.
I also talked with a local repair shop about the issues and possible remedies.
I got a SSD of the same size as the suspect HDD and successfully imaged the drive into the new item. I do like the improvement the SSD provides.
With that done I tried to boot to a live DVD iso. When I got an "[errno 5]" describing a possible faulty CD/DVD disc or drive and since the DVD had previously proven its function in an install into a desktop machine, I swapped out the drive for a spare one .
I then downloaded the 16.04.6 iso, verified the sha256sum and burned it a DVD using a win7 box at work.
Then: "Failed to open\EFI\Boot\mmx64.efi Not Found, Failed to load image \EFI\Boot mmx64.efi: Not found, Failed to start MokManager: Not Found, Something has gone seriously wrong: import_mok_state () failed". I had the same results with both of the live DVDs.
After a bunch of searches, reading about not only the Ubuntu part of this but also the still functioning Windows 8.1 portion of the machine, I went down the dark path to eliminate any possible Windows influences that might be hanging up the Ubuntu install such as in disabling the secure boot.
Thus far I have made it to a "GNU GRUB version2.02~beta2-36Ubuntu3.22" header screen with grub> prompt. I hit the TAB key and get a list of commands. I have since been reading the Grub manual and playing with the commands. The "help" command erupts with a description list that is longer than the screen height so I can only study the last portion of the list of explanations. Any advice as how to pause this rapidly scrolling display would really be appreciated.
I did get the "Zfs-bootfs" to allow the"exit" command to boot back the the win partition. I have been experimenting with other items in the command list but without sense of the proper syntax or file names it has been few hits and mostly error messages. The grub manual does not appear to explain things at this grub prompt level. Linux commands are not successful either. I have also tried without success to use this grub prompt to find a grub.cfg file or where in the SSD grub itself is located.
If you can point to a better explanation of how to use this interface please post.
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