Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Deleting Former RAID Structure on HDD

21 May 2012   #1
Bronco Leonard

W7 Pro 32
Deleting Former RAID Structure on HDD

I just rebuilt my system using a separate "C" drive for the OS and apps plus a second HDD for data. I'm using Windows 7 Pro. The data drive was previously used as half of a mirrored array. The twin drive is on a shelf in the garage. I reformatted the data drive but am getting a message during POST that the system is "not in RAID mode now, there is still RAID structure in the hard disc".

I guess I needed to do more than format the data drive; I'm now thinking I needed to delete and recreate the partition and then format (just one partition, not multiple). In the old days, this might have been handled by FDisk. I assume that there is a better way now.

I'm thinking of copying all the files on the data drive elsewhere, reinitializing (repartitioning) and formatting it from within Windows using "Disc Management". Then I copy the data back and I'm done. Does this seem like a reasonable solution?

My System SpecsSystem Spec
21 May 2012   #2

Linux Mint 17 Cinnamon | Win 7 Ult x64


Yes, this is handled by DISKPART now.

After backing up your data, you can remove the structure by booting off your DVD, go into repair windows, go to a CMD prompt, enterdisk prompt, select your disk and type CLEAN.

You can type help at the diskpart prompt to get a list of commands.

After cleaning the drive, exit diskpart. Simply deleting a partition from within disk management may not remove all the old structure information.

I'm gathering from your post that your WIndows boot drive is OK?

My System SpecsSystem Spec
21 May 2012   #3

Windows 7 Ultimate x64 SP1, Windows 8.1 Pro x64, Windows 10 Pro x64

Are both systems using Intel RAID controllers?
If so you can change the RAID disk back to normal during boot in the RAID BIOS
I have never had this distroy any data (it says it will but that is for RAID 0)'
It is always a good idea, though to backup what you cannot afford to lose.
My System SpecsSystem Spec

22 May 2012   #4
Bronco Leonard

W7 Pro 32

Thanks for the help. After reviewing a tutorial, I used DISKPART and it worked perfectly (even down to the time estimate).
My System SpecsSystem Spec
01 Feb 2014   #5


I had a similar issue trying to image a 1TB drive that was formerly in a mirrored RAID array.
After trying 3 different disk cleansing/scrubbing programs including Achronis and none worked.
DISKPART worked great even through a USB interface to the drive and did it in minutes!

If I had known this earlier, I could have saved 2 days of fooling around.
My System SpecsSystem Spec

 Deleting Former RAID Structure on HDD

Thread Tools

Similar help and support threads
Thread Forum
Deleting a 2nd User account & its safety in not deleting anything else
Hoping this is the right place to ask my question and that the title is OK. I was asked to create a 2nd user account with 'Administration privileges'. Having done so I no longer need it. In trying to delete it I got a pop up window asking me if I wanted to save some of my files (My Documents etc.)...
General Discussion
Deleting a directory structure without deleting the name of the root
HI With the command prompt of Windows 7 SP1, how do I delete a directory structure with their files without deleting the name of the root directory? THANKS BYE
General Discussion
RAID 5 switched from single storage to raid 5, lost drive letter
I am running 7 pro 64bit on a ASUS p8p67 deluxe mobo and I copied all data from my 1tb storage D: drive to a backup external and proceded to install raid 5 with 3 single 1tb drives and the raid is up an running. However using Intel Rapid Storage Technology to setup the raid inside windows I had to...
General Discussion
Recover Files after deleting partition with folder structure?
Hi, i deleted my partitions by mistake. Drive originally had 2 partitions, 100MB (Windows 7 setup partitiion) and 930GB (Data storage partition). In summary: 1) I deleted the 100MB partition (because disk is(was) now storage disk) and 930gb partition were deleted too. 2) I started following...
General Discussion
Windows 7 System Image - Restore Non-RAID to RAID 0+1
I created a windows system image with the backup and restore utility built into win7. This windows install is on a single hard drive. I built and onboard RAID 0+1 array and used the windows 7 install disk to restore the image on to the new RAID volume. Windows starts to boot up but the screen goes...
Backup and Restore

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:09.
Twitter Facebook Google+