How can I extend the main volume of my disk?

I was dual-booting Ubuntu with Windows 10, but decided I no longer want Ubuntu on my SSD. I've deleted the contents of the partition, but I can't figure out how to extend the main partition to consume the extra unallocated space that was left behind after deleting the contents of the Ubuntu partition. Here are the steps I've taken:

1. Open Disk management


2. Right-click the volume I wish to extend

As you can see, the extend option is unavailable. I thought maybe I just need to delete the 77gb partition to restore the space to the main partition, but it gives me what seems like a pretty serious alert when I try to delete the 77gb partition:

3. Attempting to delete the 77gb partition to restore the 77gb to the main partition


Does this mean that I will no longer have access to the 77gb if I delete the partition? Is this some irreversible change, or am I misunderstanding the warning?

When I try to delete the 77gb partition I get this error:


Any idea why?

Your clicking on free space click on c then it should expand you can delete nothing

It isnt a parition its free space look at the detail it shows 4 paritions as explained you cant delete nothing there is no parition to delete simply click on c and expand it clearley shows up in light green as free space

topgundcp said:

Your disk is an MBR disk and you can create 4 partitions max. when you created a new 77 gb partition, it became a logical drive in green color.
Open admin command prompt and type:
diskpart
select disk 0
list par ===> take a note of the partition # of the 77GB partition
select par # ====> replace partition # of the 77GB partition
delete par
exit

Go back to disk management, right click on C->Extend Volume.

Can you confirm for me which partition it is? I'm pretty sure it's partition 0 but I just want to be 100% on something like this. Here's the image:

Samuria said:

It isnt a parition its free space look at the detail it shows 4 paritions as explained you cant delete nothing there is no parition to delete simply click on c and expand it clearley shows up in light green as free space

I've said in the OP that I cannot extend the 371gb volume. It is grayed out and therefore unavailable.

meepo said:

I've said in the OP that I cannot extend the 371gb volume. It is grayed out and therefore unavailable.

What do you have in the 15 GB partition to the right of the 77 GB free space? The 77GB of free space and the 15 GB partition to the right of it are both part of an extended partition. It's that 15 GB partition that is keeping you from doing anything with the 77 GB free space.

Right now you have an extended partition which has inside it 77 GB of free space, and the 15 GB partition to the right of it. It's that 15 GB partition that you really need to delete, delete the extended partition (if it is still there after deleting the 15 GB partition), then you will have real UNALLOCATED space. And that's the problem - people are confusing free space with unallocated space - they are not the same thing.

NavyLCDR said:

What do you have in the 15 GB partition to the right of the 77 GB free space? The 77GB of free space and the 15 GB partition to the right of it are both part of an extended partition. It's that 15 GB partition that is keeping you from doing anything with the 77 GB free space.

Right now you have an extended partition which has inside it 77 GB of free space, and the 15 GB partition to the right of it. It's that 15 GB partition that you really need to delete, delete the extended partition (if it is still there after deleting the 15 GB partition), then you will have real UNALLOCATED space. And that's the problem - people are confusing free space with unallocated space - they are not the same thing.

How can I check the 15gb partition to ensure there isn't anything important on it?