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#21
Martin, Microsoft seems to think differently:
This from page already linked here a couple of times: create partition msr | Microsoft DocsA Microsoft Reserved partition is required on every gpt disk. The size of this partition depends on the total size of the gpt disk. The size of the gpt disk must be at least 32 MB to create a Microsoft Reserved partition.
Kari
As I said the error is misleading. Look at the EFI system partition - it is almost full. That is what is causing your problem. You need to extend size of it (easier said than done as the pesky MSR partition gets in the way).
You need to
1) shrink C drive by say 105 MB from left using Minitool partition wizard free
2) backup MSR only using Macrium Reflect
3) Extend size of EFI partition by 100 MB (slightly lower than space created above to avoid zone boundary issues)
4) recover MSR to space between EFI and C drive.
You could just delete MSR and not bother or recreate it using diskpart instead if you prefer.
UEFI only needs two partitions to run (EFI and C drive). On small devices, I used to delete the MSR and recovery partitions.
However, the recovery partition is needed now if you use Marium Reflect Free in WinRe mode rather than older WinPE mode. WinRe mode gives ability to make Macrium Reflect bakupsierwifi which is great feature.
For the Windows upgrade 15 MB was required.
There was 12 MB available.
The failure was due to a deficiency of 3 MB.
After the next Windows build is released I'm planning to troubleshoot the upgrade failure.
The method that I'm most familiar with is removing files to fix the failure and I'm interested in your method.
I'll post a new thread in May/June.