A while back I cloned my Windows partition from my old hard drive over to a new SSD. I'm now having trouble with the latest cumulative Windows update (which is failing repeatedly with error 0x800F0922) and want to use the Windows Recovery Environment to troubleshoot.
Since I only cloned the Windows partition itself, there is currently no recovery partition, and when I tried reagentc /enable
to create a new one, this fails with error code 3bc3
which translates to "The requested system device cannot be found."
What's going on and is there any way of stopping it?
Best Answer
This will happen if the EFI partition has the wrong GPT partition type. As it turned out, this was also causing the problem with the cumulative update.
If you are having similar issues, you can check whether this is the problem with the
diskpart
command. Assuming you have only one hard disk drive,You should see something like this:
The smaller partition named "System" is the one you want, usually partition 1, so
And you should see something like this
If the file system is not FAT32 then you are not looking at the right partition. It should also be Hidden, and will not usually have a drive letter assigned unless (as in the originally posted question) it has been explicitly given one for troubleshooting purposes. It might not be exactly 500MB, but should only be taking up a small fraction of the hard disk.
The type of the EFI partition should be
c12a7328-f81f-11d2-ba4b-00a0c93ec93b
as shown above. If it is not, and in particular if it isebd0a0a2-b9e5-4433-87c0-68b6b72699c7
(see Microsoft Basic Data Partition on Wikipedia) then that is likely to be the cause of the problem.If the partition type is incorrect, you can fix this with the
set id
command,The
reagentc /enable
command should then work, and if you are lucky, so will Windows Update.