OS Partition Expansion

I have not been here for a number of years and unfortunately, I have forgotten a lot of the IT stuff I learned here and elsewhere.

I have a Dell Laptop with a 500 GB M2 SSD.

At the outset, I used Sysprep to create two partitions, C for the OS and D for data.

In addition, I moved the users folder over to the D drive. (I don't know why in retrospect I chose to do this with a laptop that could only hold one physical drive. In retrospect, it was a mistake. But I was in the habit of doing this with all of my PCs.)

Anyway, the present problem is that I only allocated about 70 GB to the OS and now it is full. I can't add any other programs.

I have plenty of room on the D partition.
.
The problem is that I have not found away to expand the C partition and am not sure what to do.

Any advice would be appreciated

Paul Black said:

Hello @andrew124C41,

As a start, please post a screenshot of your Disk Management.

Make sure that ALL the text in ALL the columns is visible and showing the whole window.

Now UPLOAD a screenshot of your partitions using one of the following methods . . .

> How to Post a Screenshot of Disk Management
> How to Upload and Post Screenshots and Files at Ten Forums

I hope this helps.

You could use a 3rd party partition manager, plenty of free versions around. I like diskgenius and aomei .
DiskGenius: Data Recovery, Partition Manager, Backup & Disk Utilities

To expand C to the right, you need unallocated space directly on the right of it.

open an admin cmd prompt and type:

reagentc /disable
(then press enter )

Next delete the 723mb recovery partition.

Then resize D by dragging from the left with a 3rd party partition manager.

Then click apply.

now you have contiguous unallocated space on the right of C to expand into.

Expand C into that unallocated space.

Then open an admin cmd prompt and type :

reagentc /enable

I don't use bitlocker, you might have to turn it off first.

SIW2 said:

You could use a 3rd party partition manager, plenty of free versions around. I like diskgenius and aomei .
DiskGenius: Data Recovery, Partition Manager, Backup & Disk Utilities

To expand C to the right, you need unallocated space directly on the right of it.

open an admin cmd prompt and type:

reagentc /disable
(then press enter )

Next delete the 723mb recovery partition.

Then resize D by dragging from the left with a 3rd party partition manager.

Then click apply.

now you have contiguous unallocated space on the right of C to expand into.

Expand C into that unallocated space.

Then open an admin cmd prompt and type :

reagentc /enable

I don't use bitlocker, you might have to turn it off first.

Bitlocker is pending but not on. I was unable to accomplish any of this.

- - - Updated - - -

This is far as I have been able to go:

I accidentally deleted the EFI partition. What am I to do now?

I have gone as far as I can. I did not turn on Bitlocker yet it says that it is on and I cannot turn it off.
Using AOMEI, when I right click on the D partition, there is no dropdown allowing me to to resize.

I am afraid now if I turn the laptop off, I will not be able to reboot because of the loss of the EFI. Is that the case?
What can I do?

Here is a screenshot after I right click

I am afraid now if I turn the laptop off, I will not be able to reboot because of the loss of the EFI. Is that the case?
What can I do?

If you have any problems, presumably you have bootable media ? Installation media, or some custom winpe thing ?


probably greyed out those options because of bitlocker.

Navigate to Control panel / system and security / BitLocker Drive Encryption;
Click Turn Off BitLocker > Decrypt Drive;

https://social.technet.microsoft.com...10itprogeneral