topic Re: How to increase the size of a Windows 10 System disk ? in ESXi Discussions

How to increase the size of a Windows 10 System disk ?

m4biz — Fri, 20 Oct 2023 06:30:51 GMT

Hi.

I need to increase the size of the primary (system) disk of a Windows 10 Vm running on an ESXi host.

For this purpose I've changed the disk1 size on the VM's settings.

Anyway, If I look to new configuration, I see this:

Is there any way to add this unallocated space to C: (so that I'll have a disk of about 60 GB)?

Any idea?

Thanks in advance.

Re: How to increase the size of a Windows 10 System disk ?

Kinnison — Fri, 20 Oct 2023 07:22:39 GMT

Hello,

Your question is not related to some VMware technology but to the methods provided by the guest operating system manufacturer.
In your case it is documented here: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/extend-a-basic-volume
You basically have to use a tool, there are several, to "move" that 520 MByte partition currently in between to the end of the disk.

As usual, it's best to have a backup in case things don't go your way.

Regards,
Ferdinando

Re: How to increase the size of a Windows 10 System disk ?

m4biz — Fri, 20 Oct 2023 07:31:54 GMT

I'll try

Thanks

Re: How to increase the size of a Windows 10 System disk ?

jaipraksh — Fri, 20 Oct 2023 07:36:34 GMT

Extend a volume with Disk Management

1 Open the Disk Management.

2. Select and Right Click the Volume that you want to extend, And Then select Extend Volume.

3. Click on next.

4.Select how much disk drive space to use to extend the volume.

5.Select Next, and then select Finish to extend the volume.

Re: How to increase the size of a Windows 10 System disk ?

m4biz — Fri, 20 Oct 2023 08:05:00 GMT

I've tried but it seems to me that don't works on a start volume:

Re: How to increase the size of a Windows 10 System disk ?

Kinnison — Fri, 20 Oct 2023 08:28:50 GMT

Hello,

Exactly, as written in the documentation, to do this you must also respect these two conditions:

a) The empty space must be located on the disk drive immediately after the volume that you want to extend.
b) There can't be any volumes between the volume to extend and the empty space to add.

That's why you need to repartition "disk 0" causing that the "in between" allocated partition to be moved after the unallocated space.
As I told you, there are several (third-party) tools capable of doing this, some "free" (like gparted) others "commercial" but I can't recommend any of them in particular because I haven't had to use them for several years.

Regards,
Ferdinando

Re: How to increase the size of a Windows 10 System disk ?

m4biz — Fri, 20 Oct 2023 09:13:11 GMT

Ok.

Good information.

I'll try soon.

Thanks again