This one takes a bit to explain:

Had one boot drive in Windows for years (Window 95->7->8->10) - Cloning to a bigger and better drive often. Switched over to an SSD and simply cloned the drive and made new drive C: and old drive D: and worked merrily. (A few years ago , like 2018). Using UEFI.

However, it now seems that the actual drive that does the booting is Drive D:! Every once in a while , after a Windows Update reboot, the OS does not boot and I get a BSOD. If I go to the BIOS and change the boot drive to another one (2 appear witch exact same Microsoft Boot Name), the system continues happily.

  1. How do I determine which actual partition booted the system?
  2. How do I mirror the GOOD partition to the Drive C: if it's actually Drive D: and make sure it boots from the C: boot partition
  3. Can I actually rename a Windows UEFI name - safely is the key - so that the BIOS names give me a hint.
  4. Can a drive have 2 UEFI boot partitions?

The big fear of course is to nuke the correct boot partition and be SOL and not be able to boot at all.

UEFI Windows Boot Options

EDIT: Checking Disk Management - Weird 2 Recovery Partitions - I Don't see 2 EFI Partitions that the BIOS shows

enter image description here

  • You have 5 questions, hare at SU we ask that you only ask one for each post.
    – Moab
    Oct 11, 2021 at 18:40
  • Please take a screenshot of the entire window of Disk Management and add it to your post.
    – harrymc
    Oct 11, 2021 at 19:08
  • Could "Windows Boot Manager" have 2 entries??? Oct 12, 2021 at 18:50

1 Answer 1

  1. This question was already answered 2 years ago here.
  2. Follow this guide on how to mirror EFI partitions.
  3. Follow this guide on how to change the name.
  4. Although Windows Installer doesn't like it, you can have several. It's not recommended, but yes.
  • VERY helpful. Thanks! Clarified my issue with the proper tools. I can't find 2 EFI partitions but my BIOS thinks so. But now I have an idea on how to proceed Oct 12, 2021 at 18:45

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