Disk management

Mags
Mags used Ask the Experts™
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I am wanting to delete the partitions on a drive I will be using to reinstall an OS. I have it connected external and am not seeing how to do it.

Disk Management window
Your help is appreciated,
Mags
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
You should be able to right click on the unallocated space and either delete it or shrink it.
SeanSystem Engineer

Commented:
Easiest way would be to just format the drive. you can do this in disk management by right clicking the drive in the upper portion of the window and selecting format. This will erase everything and you'll start with a empty disk.
MagsOwner

Author

Commented:
Hi John, when I right click on the unallocated space the only choice I have is to create a new simple volume.

Hey Sean, that simply formats only the "System" portion.

If I right click on "Free Space" I can either create a new simple volume or delete but get this message "This is an extended partition, it will become inaccessible if you delete it. Are you sure you want to delete it?"
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
I am not sure what happened to create that issue, but I would back up, format the drive as suggested and start again.
Sr. Systems Administrator
Commented:
I am wanting to delete the partitions on a drive I will be using to reinstall an OS.

easiest way is to clean the drive
open an elevated command prompt and type diskpart
then type list disk
verify that drive (assuming disk 2 from the screenshot, 1tb) is the correct one
then type select disk 2
then type clean
you will then see the disk in disk management with no volumes and uninitialized; you can then use to install your OS
cleaning a drive will wipe the data on the beginning of the disk that has the master boot record and partition table

You should be able to right click on the unallocated space and either delete it or shrink it.

you cannot delete free space

Easiest way would be to just format the drive.

there are multiple volumes; the user would be left with a number of empty volumes that would likely not help with reinstalling an operating system.  still requires manual intervention to remove the partitions
MagsOwner

Author

Commented:
Bingo Seth!!!! It is asking me, "You must initialize a disk before you can use it..." Shall I select "partition style MBR?
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
Yes you should initialize (I was suggesting Format as a generic term). Then MBR should give you an OS partition to install in.
MagsOwner

Author

Commented:
Thanks for the info John. Simply formatting it wasn't working, which is why I reached out.
MagsOwner

Author

Commented:
It is now all "unallocated" space, shall I create a "simple volume" or is it ready for an OS to be installed?
SeanSystem Engineer
Commented:
installing the OS will create the volumes. Go ahead and start the OS install.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Now that it is all unallocated you may be able now to format or first create as a volume
MagsOwner

Author

Commented:
Put it in computer without formatting it. Okay, getting a BSOD - STOP: 0x0000007B - check for viruses on your computer. I already ran CHKDSK but didn't do CHKDSK /F to check for hard drive corruption as suggesting. I am going to pull it, format it the run CHKDSK /F and try and reinstall.
SeanSystem Engineer

Commented:
You're getting a BSOD before installing the OS?
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
OK try that. Once you got unallocated space , formatting would have detected disk issues
MagsOwner

Author

Commented:
Doing a long format...quick format said it was "Healthy".

Yes Sean, I am getting a BSOD while I was installing the OS.

I have a senior client whos XP computer died...he is grieving it. I can access his old hard drive so I thought I would take an old working computer and install XP Professional on it and transfer his programs, files and folders.
MagsOwner

Author

Commented:
Still formatting...forgot how long it takes. I will be in touch later tonight or tomorrow. USA - MDT. Thanks everyone!!
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Could take an hour or a bit more.
Seth SimmonsSr. Systems Administrator

Commented:
you should be opening another question for the OS installation issues; this one was only about deleting volumes on a secondary disk
MagsOwner

Author

Commented:
Will do Seth...thanks! I'll see what happens after the formatting is finished.
Mags
MagsOwner

Author

Commented:
Thanks guys. I will open another question if I have installation issues.
Have a great weekend!!
Mags
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Thank you and good luck

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