The hardware involved is a HP Spectre x360 laptop (running windows 10 - at least it was :[ ) and 1TB WD Passport Ultra External Hard drive.
Scenario:
I am attempting to create a external hard drive with a portable Ubuntu (no ties to the hard drive of the laptop). Visiting the forum pages and attempting the suggested solutions have led me to a computer that no longer recognizes Ubuntu on my external hard drive or the windows 10 OS on the laptop HD apparently.
Steps that have led down the dark and lonely path:
I then pushed install now and then shutdown the system and removed the USB when the installation was finished.
Now, with the EHD plugged in, the purple screen appears giving me options to boot windows or ubuntu and both options work great.
Much obliged for all your help in advance.
UPDATE #1:
The link to the boot-repair info is http://paste.ubuntu.com/15338181. If you could interpret the results and proper solution I would appreciate it. Unsurprisingly there does appear to be some shenanigans going on.
The sda is my laptop hard drive (laptop came with windows 8.1 and then I moved to windows 10 when it was released), sdb is the live USB, sdc is the EHD.
UPDATE #2:
I tried to do a clean install with windows 10 and it wouldn't work. So I tried with windows 8.1 (since that is what came with the computer originally) by deleting each partition except one that had an OEM description (deleting that seemed a bit scary if I did't have to). It seemed to work but on restart after everything was done I once again got the boot error screen no OS found. This is the new boot-repair info http://paste.ubuntu.com/15340916 (the EHD is not attached so it doesn't showup this time). I looked at the hard drive in gparted and the partition sda3 says unknows (it was like this before the clean install as well). Suggestions on how to proceed?
I did find a solution to my problem but unfortunately not the elegant one I had hoped. Perhaps it would have been possible near the beginning but things went down hill after trying Rescatux... shame on you Rescatux! :) jk, jk
Anyways, the final solution after Update #2 above was to:
sudo xxd /sys/firmware/acpi/tables/MSDM
Although this worked, it was kind of the sledgehammer approach by turning the initial Ubuntu problem into a pure Windows problem. Hopefully when I try to make the external Ubuntu hard drive again I won't climb down this rabbit hole again.
UPDATE #1:
Still needing an EHD I repeated steps 1-11 and part of 12 (up to and including unplugging the EHD and getting the black gnu grub screen). For whatever reason, Ubuntu puts boot files onto my internal hard drive see boot-info before and after ubuntu install. So to get to Windows without the EHD attached type "exit" in the grub terminal and Windows will boot... Now to get rid of that pesky GNU GRUB screen and make sure the EHD behaves properly.
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