Windows 8 forum


windows 8 - no space in C drive

by chris3551 / June 3, 2016 2:05 PM PDT

I have just installed Windows 8 and have no programs on the computer but I am told that C drive is running out of space.
When I go to disk management it tells me that there is 142GB of unallocated space.
What can I do?

Discussion is locked
You are posting a reply to: windows 8 - no space in C drive
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: windows 8 - no space in C drive
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

All Answers

Collapse -
Sounds Like An Incorrect Partition Setup
by Grif Thomas Forum moderator / June 3, 2016 2:13 PM PDT

When setting up partitions, the C: drive must have sufficient space to hold the OS, plus all programs, etc.. Many folks think that creating multiple partitions is the way to go, but if you make the C: drive too small, then you come up results as you are seeing. When I set up a computer and install the OS, I generally, cause the entire drive to be one partition and make it the C: drive. It then gives plenty of space for all things needed.

In your case, since you recently installed Win8, you may want to reinstall the OS using the installation DVD and during setup, allow all the unallocated space to be formatted.

Hope this helps.


Collapse -
by chris3551 / June 3, 2016 3:14 PM PDT

Thanks Grif,
I'm sure you are right. I was told (when installing) to use the advanced install because previously XP was the OS.
I did try at the time to delete partitions as advised but obviously I'm haven't done things correctly.
Please could you guide me through a re-installation. I would be very grateful.

Collapse -
Reinstalling Or Formatting The Unallocated Space....
by Grif Thomas Forum moderator / June 4, 2016 12:25 PM PDT
In reply to: Reinstalling

...depends entirely on how much you want to tinker with the computer.

First, remember that a new format, partitioning, and reinstall of the OS will remove all the data you have on the computer. In addition, you'll need to be sure you have all the various hardware drivers so they can be reinstalled after Win7 is back on the computer. Also, be sure to make a backup of your important files, pictures, etc., before doing anything.

Renengade600 made a good point about simply formatting the unallocated space and merging it to your C: drive. It's probably the easiest and fastest option here. See the link below for steps on using Disk Management to format and merge that space.

And for a full clean install, see the link below for good basic instructions for reinstalling the operating system and creating a new partition for it.

Hope this helps.


Collapse -
just format the unallocated space
by renegade600 / June 3, 2016 4:33 PM PDT

you do not have to reinstall. you can either format the unallocated space and install your programs on it or merge it with c drive partition

Popular Forums

Computer Newbies 10,686 discussions
Computer Help 54,365 discussions
Laptops 21,181 discussions
Networking & Wireless 16,313 discussions
Phones 17,137 discussions
Security 31,287 discussions
TVs & Home Theaters 22,101 discussions
Windows 7 8,164 discussions
Windows 10 2,657 discussions


Your favorite shows are back!

Don’t miss your dramas, sitcoms and reality shows. Find out when and where they’re airing!