@atanere
Don't look at me, Kimosabe, my experience on Windows is 3 years out of date, and that is with Windows 7. Last thing I touched was Windows 8.1 on this Toshiba laptop, long enough to disable the secure bits, blow away Windows 8.1 and install all Linux.
Yes, if Secure Support is the same as Secure Boot ... Matthew Garrett's Shim ships with all versions of Ubuntu and should allow it to boot alongside Windows, even if Secure Boot is in place. Note the underline with "should".
@Yara - you are doing very well under difficult circumstances, and thank you for all the information.
For easier viewing by The Viewers, Yara has captured these screenshots:
and
Yara, should you wish to do as I do any time - when you are in Imgur and have your photo uploaded, you can right-click in the photo and choose "copy image location". Then come into your reply pane here where you have started a message.
From the toolbar choose the little icon just right of the smiley face (smart tip shows "image". A small pane will open, press Ctrl-v for Paste and the internet address (URL) for your Imgur shot will appear in it. Press Enter and the picture is embedded into your message reply.
So Yara has the ESP (EFI System Partition) at /dev/sda2, Swap of 8 gig at /dev/sda6, and the Root partition is 100 GiB (102GB) at /dev/sda9. System is GPT formatted.
If I think of anything, I will let you know.
Cheers
Wizard
maybe that wonderful, magical Wizard will steer you better while I go scratch my head for a bit.
Don't look at me, Kimosabe, my experience on Windows is 3 years out of date, and that is with Windows 7. Last thing I touched was Windows 8.1 on this Toshiba laptop, long enough to disable the secure bits, blow away Windows 8.1 and install all Linux.
For now, leave Secure Support enabled unless Wizard wants you to change it. Ubuntu should work with this setting enabled.
Yes, if Secure Support is the same as Secure Boot ... Matthew Garrett's Shim ships with all versions of Ubuntu and should allow it to boot alongside Windows, even if Secure Boot is in place. Note the underline with "should".
@Yara - you are doing very well under difficult circumstances, and thank you for all the information.
For easier viewing by The Viewers, Yara has captured these screenshots:

and

Yara, should you wish to do as I do any time - when you are in Imgur and have your photo uploaded, you can right-click in the photo and choose "copy image location". Then come into your reply pane here where you have started a message.
From the toolbar choose the little icon just right of the smiley face (smart tip shows "image". A small pane will open, press Ctrl-v for Paste and the internet address (URL) for your Imgur shot will appear in it. Press Enter and the picture is embedded into your message reply.
So Yara has the ESP (EFI System Partition) at /dev/sda2, Swap of 8 gig at /dev/sda6, and the Root partition is 100 GiB (102GB) at /dev/sda9. System is GPT formatted.
If I think of anything, I will let you know.
Cheers
Wizard