Win 11 c drive is 77GB. Normal? or time to clean install?

I used to spend all my time on linux so didn't care, now, for a while, I am back to only win 11. Linux partition is erased.
Seems excessive! Been a while since I did a clean install - maybe time?
I have all my 44GB of source stuff on a separate partition so that is not included in C. Games are on different partitions.
Yes I have done a CP/Win Tools/Disk cleanup but doing it now just to be sure. (I got back 0.6GB.)
Thanks!

Edition Windows 11 Pro
Version 25H2
Installed on ‎Sun ‎8/‎24/‎2025
OS build 26200.8246
Experience Windows Feature Experience Pack 1000.26100.297.0

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-- Asus ROG STRIX Z790-E Gaming wifi-6E, I9-13900k, UEFI/GPT, 32GB, Sam 980 Pro 1T M.2, Win11 24H2, GeForce RTX™ 3060 Ti VISION OC 8G (rev. 2.0) parts: Lian Li 207 case, Corsair RM750E PSU, Arctic liquid freezer iii Pro 360 aio. lasers: HP M254dw color, HP 4001dw. Epson scanner. Terabyte.

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77 used; 39 available; not time to panic yet.

How much of the 77 is taken up by System Restore?

Fishmill said:

77 used; 39 available; not time to panic yet.

How much of the 77 is taken up by System Restore?

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Where would I find "system restore"? I have win backup shut off. I use Terabyte to image my partitions and drives and that backup goes to yet another drive and partition. I have 3 1T NVMe's.

Been a while since I did a clean install - maybe time

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- I've not done one or needed to on my 2 Win 10 laptops in 8 years or so.. and they have a LOT of progs installed.

That 77GB, assuming it's the used space onyour Windows partition includes:
- installed programs
- personal data in the default library folders - and that often includes folders related to installed progs
- Store apps
- Browser-related data
Etc.

So you need to see where your space has gone.

Wiztree (free) is a very good way to see everything, viewed in 2 different ways:


The cushion map at the bottom immediately shows where most space has gone at at glace- the largest square or rectangle. Simply hover over it to see details.

Type "system restore" into the search box; that should lead you there.

No telling how much space it is using. Could be 10 or 20 gb, but you can control the maximum.

I do not store personal files or the .exe etc files (used to install all my stuff) on the C partition - that is all on the E partition.
I use tree size free but here it is in your form:

edit - I just uninstalled Blackmagic/Davinci Resolve and that brought me down to 70.9GB. Still strikes me an awful lot. Yes, I know that some folks never do clean installs but I do not live in that world. :)

attached pics now represent that...