Reinstalling Windows 7 on Raid 1

Dividee

Commendable
Jan 31, 2017
1
0
1,510
Hello, I had a PC with two 240GB disks made into RAID 1 array and a 2TB disk which is a non-RAID disk.
What I wanted to do is reinstall Windows 7. I put the installation cd into my drive, loaded drivers to see my RAID volume and proceeded with installation. It has succeeded, but has moved all data to Windows.old folder and when booting asked which system to boot (2x windows 7).
I tried then to install Win7 once again, but now with formating the partition. But when I clicked format during installation, and error occured (0x80070057) after mere second, so i doubt any data got removed. When I clicked Install Windows, the installation has cancelled due to error: Windows system cannot format partition on disk 1. An error occured while preparing partition chosen to installation with the same error code, and the installation cancels. Now the system does not boot at all (0xc000000f ,the boot selection failed because a required device is inaccessible). At startup the RAID configuration is ok, and when i try to install windows once again, i keep getting those errors. How could I install clean Win7 on my PC? Does destroying RAID array , installing Windows and then creating it again will help? Or if i format the partition from cmd (cmd -> clean) during Windows install will help? - how will it behave on RAID1?
 
Solution
You can try access the command prompt during install (Shift+F10) (ALSO! Unplug ANY DRIVE but the targe drive. So your 2TB UNPLUG IT!) and then type in diskpart then list disk it should then list your single RAID. Then Select Disk X where X is the drive letter (probably 0) and then clean

then go back to the select a partition screen and it should have 1 unallocated partition. Select that and just hit next.
You can try access the command prompt during install (Shift+F10) (ALSO! Unplug ANY DRIVE but the targe drive. So your 2TB UNPLUG IT!) and then type in diskpart then list disk it should then list your single RAID. Then Select Disk X where X is the drive letter (probably 0) and then clean

then go back to the select a partition screen and it should have 1 unallocated partition. Select that and just hit next.
 
Solution