Windows 10: Move efi and recovery partitions from a raid array I want to split

Having gone from windows 7, to 8 to 8.1 to 10 without a reinstall I've started to have a few issues so I've just reinstalled windows to a new drive.

Trouble is, I didn't think too much and left the old RAID array connected so the recovery and EFI partitions are still on it and Windows Setup used these instead of creating new ones.

I want to unRAID them now to get my 2 SSD's back but how do I copy the recovery and efi partitions over?

:)

 

W10 corrupts W7 hard drive

W8.1 was working fine as a removable hard drive. W7 installed on a RAID array as multi partitions. Works fine and both OS can be booted and W8.1 reads the RAID array when booting as W8.1

W10 upgrade completed on removable 8.1 drive, but then checked RAID drives for errors and changed them.

W7 on raid no longer boots. After severel hours W7 finally re-installed on RAID array. (data is on other partition so ok.) Tested working all data recovered.

Here's the kicker.

As soon as I boot from W10 it says "reboot required to fix drives" then corrupts the Windows 7 install... Which doesn't need fixed!!

The drive containing W7 OS becomes unreadable although other data partitions on the RAID array are OK.

W7 recovery tries to fix the hard drive then fails.

W10 changed drive letters first attempt, so I thought this an easy fix, but in fact every fresh W7 install is corrupted as soon as I boot from W10.

This is a major problem. Why is W10 changing the drive parameters on a completely seperate fully operational operating system?

 

My upgrade from Windows 8.1 Pro to Windows 10 Pro repeatedly fails on error 80070004

I did this 5 times, no luck.

I'm guessing it's a disk thing, because it's factory splitted in 4 partitions (2 recovery partitions, 1 EFI, C:\ )

What about yours?

 

Raid 0 I believe ??
Spiting the SSDs will result in data loss.. backup data. Change Raid back to AHCI in bios.
Now you can install OS on any drive you want.

 

Ideally I wanted to do it without re-installing.

Turns out it was actually very easy after all that, I didn't even need to use the installation media.

I just shrunk the new Windows partition down by 100Mb and created a new efi partition using diskpart, then just ran bcdboot C:\Windows /s

I rebooted and changed boot order and all good *Smile

I've now split my RAID array and got my drives back, hooray!