I have two Windows 10 installations on a single GPT drive.
The current partition layout is: EFI
WinRE
MSR
...OS1...
...OS2...
Currently, OS1 is configured to use WinRE
partition, as suggested here. OS2 does not have any WinRE yet.
Is it possible to:
- re-use existing (large enough)
WinRE
partition for both OS1 and OS2, or each installation requires separate WinRE? - does answer (1) change if I will have to turn BitLocker on for OS2 per employer BYOD requirements?
Also:
do "large" (i.e., feature) updates to both installations affect WinRE?
is WinRE partition required to enable BitLocker, or this is wrong?
UPD:
My key idea (I'm asking about how to implement it) is to re-use 'auxiliary' partitions, if that's possible. I would like to be able to enable BitLocker on OS2 without having to re-partition the drive (even autoshrinking OS2
partition), so that OS2 should re-use existing EFI
/WinRE
partitions.
So:
Is it possible to re-use existing (large enough)
WinRE
/EFI
partitions for both OS1 and OS2, with at least one OS having BitLocker turned on?How should I configure OS2 to re-use one of these unencrypted partitions as a 'bitlocker-required unencrypted partition'?
Does re-using partitions affects somehow stability (update of WinRE by feature updates) or security?
bcdedit
must match the GUID inReAgent.xml
in the WinRE partition. You could try checking reasons that the partition is not suitable by looking at reagentc log file. For example try runningreagentc /enable /logpath c:\WinRE.log
on both.