How to Delete the Undeletable using Diskpart (Disk Partition) in Windows 10

How to Delete the Undeletable using Diskpart (Disk Partition) in Windows 10


Today, we’re going to delete disk partitions
in Windows 10 that appear to be undeletable. These partitions can
sometimes be labeled as recovery partitions or OEM partitions, but they
all have one thing in common: they’re protected, making them impossible to
delete from certain tools in Windows. The symptom is apparent when you look at a
disk in the Disk Management utility of Windows. To start the utility, simply
right-click the Windows button and choose Disk Management. Let me slide this
over so I can show you in this corner of the desktop. We have two disks, labeled 0
and 1. The partitions I want to delete are on disk 0, which shows five partitions.
If I right-click on any one of these, you can see what options are available in
the context-sensitive menu. On this first partition, Delete Volume is obviously
greyed out. In fact, as I right-click on the subsequent ones, the option to delete
doesn’t even show up. The second, third, and fourth partitions have only one
selection. The fifth one actually does give me the ability to delete it, so I’ll
go ahead and do that. Note that this isn’t my current Windows boot partition,
which is on disk 1. This is actually an old Windows disk that I want to erase, so
I can use it as a secondary storage disk. It will complain that it’s already in use,
but I can go ahead and delete it because it’s just a copy of Windows. In a
previously published video, I showed you how to clone a hard drive containing
Windows to a bootable SSD drive. I’m simply deleting the partitions from the
hard drive so I can use it as secondary storage. That gives us four remaining
partitions which are undeletable from Disk Management. The solution is to use a
built-in command line utility in Windows called diskpart. Let’s go to our search
bar and type “cmd,” which returns the command prompt. I’ll right-click on it
and run it as administrator. Let me move this up a little bit so we can see what
happens graphically in the Disk Management screen. The first thing to do
is execute diskpart, spelled d-i-s-k-p-a-r-t. It’s a command line disk partition
utility, and by typing “list disk” and then Enter, it gives us a list of all the
physical drives in the computer. You can see disks 0 and 1
correspond to the same 0 and 1 in Disk Management. We now need to select
the disk that has the partitions that we want to delete. Since the command line
doesn’t have a graphical interface, we need to type “select disk 0” to select it.
When I “list disk” again, you’ll see a star next to disk 0, indicating that it is
selected, and that we’re ready to perform an operation on it. Now, let’s list the
partitions on this disk by typing “list partition.” You can see we have five
partitions listed, even though Disk Management shows only four. Partition 2
is the one that’s missing, which means that not only is it undeletable, but it’s
also hidden in Disk Management. It’s a small reserved partition that’s created
by Windows, but I’d like to delete that also. Again, just like we selected a
disk, we need to select a partition. If we list the partitions again, you’ll see the
selection with a star. There is a shortcut for the word “partition.” I can
type “list part,” and that’s the same as “list partition,” so from this point
forward, I’ll use “part” instead of “partition.” Now that partition 1 is
selected, we need to delete it. I’ll simply type “delete part” and press Enter.
But because it’s a protected partition, the delete fails. What we’ll need to do
is type “delete part” and then add the argument “override,” and hit enter – and that
does indeed delete the partition. We can confirm that in Disk Management, where
the first partition is now unallocated. Let’s list the partitions again, and
notice that partition 1 is now gone. Let’s select part 2, and try deleting
that with “delete part.” Again, it fails because it’s protected, so I need to type
“delete part override.” Now it’s just a matter of selecting and deleting the
remaining partitions with the override flag. Let’s “select part 3” and “delete part
override.” Select the fourth one and delete it. And finally “select part 5” and
delete the partition. Now when I list my partitions, they’re all gone. If we go to
Disk Management, you’ll notice that it’s not responding, because it doesn’t like
the fact that we’re trying to delete something from another process. So I’ll
need to kill off the application, force close it, and then restart Disk
Management. You can see that disk 0 is now clear of all partitions, with an
unallocated space of the total hard drive. At this point, I’m able to create my own
volumes and partitions, and format them as I normally would. I hope you enjoyed – Thanks for watching!