How do I change LL/Windows dual-boot (UEFI), to LL single boot (UEFI)?

[m654321]

As many of you are aware, I posted a tutorial at https://www.freecinema2022.gq/forums/tutor...y-enabled/ which fleshed-out in detail, set-by-step,  the youtube video originally posted by Nehal J Wani, which explained how to set up a LL/Win UEFI dual Boot, together with a few of my own additional observations/comments.

I am now getting to the stage, where I am having less-and-less need for a dual-boot with MS Windows, and any remaining needs can be satisfied with Win8.1  set up as a virtual machine in Oracle Virtualbox on the LL host.

Deleting MS Windows from a dual-boot set up with LL on my older laptop (i.e. UEFI/Secure Boot absent) seemed fairly straightforward - I had no problems - using Gparted, then updating Grub.

However, with my newer UEFI/Secure Boot laptop, it doesn't  appear to be quite so simple.  I've already had a go at changing my LL/Win dual-boot set-up (UEFI/Secure boot enabled) to a single-boot LL (UEFI/Secure boot enabled), but without success.  As with the older laptop, I attempted this through Gparted, deleting ONLY the partition with the Windows OS (left all other Windows partitions intact, including the EFI one).  However this didn't work and the laptop just didn't boot into anything. 

If anyone has had success with the above I'd love to hear from them. I've cloned a couple of copies of the dual-boot UEFI/Secure Boot setup, so can experiment a bit without losing anything of value should it all go pear-shaped!

Thanks everyone for reading this and do let me know if you've attempted the above...
Cheers
Mike

[gold_finger]

Aside from deleting the Windows partition, did you change the size or position of any LL partition?

Did you change size or position of the EFI System Partition?

Just in case, go into UEFI Settings Menu and double-check to make sure that computer's boot mode is still set as UEFI and did not accidentally get changed to CSM/Legacy.


Assuming you still have the live Ubuntu dvd/usb you needed to install LL in UEFI mode, boot that in UEFI mode and post back output of the following commands from a terminal:

Code:

sudo parted --list
sudo blkid -c /dev/null
sudo efibootmgr -v

P.s.
Just to let you know ahead of time, I may not be able to check back here for another 10-15 hours.

[gold_finger]

What's going on with this, m654321?  Did you solve problem?  If so, how?