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Expanding C: Drive to Another Drive

1550 Views 12 Replies 3 Participants Last post by  dmccoy

I downloaded EaseUS as I wanted to expand my C: drive to another drive because I am running out of space. As shown in the attached files.

However, I do not think it is possible to merge two drives.

Instead, how can I swap the contents of the drives with one another? So that my C: is the bigger hard drive?

Any help on this would be much appreciated.

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Thank you :)
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Are you using one or two drives? What OS are you running?

Please download the following utility and paste the information to your next reply

Please post or up.osd the report
Sorry, that link is not working for me.

It is two drives:

120GB Samsung 840 EVO Solid State Drive (C: drive)

2000GB 7200RPM Hard Disk - 6Gbps

That was the way the computer was setup when I got it.

And I am running Windows 10 Home.

Thank you.
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Okay that's fine.

Commaon Practice is to use the SSD c: for Windows and some of your main programs. Then move your data files to your other hard drive.

In Windows 10, you can change the default location for some of the user files. Rather then me typing this out see the following link. If you want to move other files we can do that as well.

To see what is taking up most of your storage download and run the following program and post a screenshot. Let me know if any questions.
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As you can see. Most is the System and Apps. However, some Apps will not allow me to delete them. That is why I wanted to switch the drives for more space.

Everything else, I do save to the other drive.
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To remove apps it will not let you uninstall use the following program. I would still like to see the windirstat to see why your system and reserved is so large we can probably reduce it down.

How to use - Very Important do not use the Registry Cleaner options.

I would also recommend running disk cleanup and removing anything you do not need.
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To answer your question, yes you can combine the drives however I DO NOT recommend doing so. This makes one drive or volume out of two drives. You would convert your system drive to a dynamic disk then expand to include the mech drive. Note the mech drive must be blank ie no partition info, no data, nothing.

A MUCH better option is to purchase a larger ssd and clone your existing system drive to the larger ssd. Up to you how you want to proceed.
Oh OK. Thank you for your advice crjdriver :)


I have cleaned the disks. Here is my WinDirStat
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I have just read that Windows 10 should not be more that 20GB. Cannot understand why mine is so much more.
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Please expand your Windows folder and post another screenshot. Did you also delete or move your apps to the other drive? They are taking up a lot of space.
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Here is the new screenshot.

I am still getting errors when I try to move or delete:

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Thank you.
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As you can see a lot of your usage is in the Windows\Installer file unfortunately it is recommended to not remove these files.

I recommend going through all your programs and uninstall any of them you do not need using free RevoUninstaller which removes all the leftovers if selected.

How to use RevoUninstaller:
Double click Revo Uninstaller to run it.
From the list of programs double click on The Program to remove
When prompted if you want to uninstall click Yes.
Be sure the Moderate option is selected then click Next.
The program will run, If prompted again click Yes
when the built-in uninstaller is finished click on Next.
Once the program has searched for leftovers click Next.
Check/tick the bolded items only on the list then click Delete
when prompted click on Yes and then on next.
put a check on any folders that are found and select delete
when prompted select yes then on next
Once done click Finish.

Then use CCleaner as mentioned to remove any unneeded apps that cannot be removed through Windows. If you are not interested in any apps there is a powershell command we can use to remove all of them.

If you have programs that have errors when uninstalling like the one shown then we can deal with them separately after performing the above.
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I have deleted more Apps. Although there has been little change. And some programs still refuse to uninstall. As shown:

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Any suggestions?

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It looks like the programs that you are trying to uninstall are missing the uninstaller files.

Please list the ones that you are unable to uninstall. Sometimes the easiest option is redownload and reinstall the programs again and then uninstall them.
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