Windows 7: How much diskspace for windows partition???

I felt confident about giving my windows partition 30Gb of diskspace. Now, and suddenly i have only about 200mb's left. Why the hell does windows use so much space? And why is its need for space growing and not constant?



Are there any backup/update/something-files i can dump? Here a screenshot of my diskspace-usage

As you add programs and updates the size does grow. 30 Gigs is on the small end for a win 7 OS partition.

Doubtful that there is any backups in that partition because it is too small.


Ken J

Hello blackdot, welcome to Seven Forums!



Have a look at this tutorial at the link below to see if it will get you some space back; 30GB is not nearly enough space for the OS and installed programs/apps.

How to Free Up and Recover Hard Drive Space

I use 50Gb for OS, but that's because I have a large drive.
You could get away with 25Gb, 35Gb or 40Gb.
It all depend upon what you're installing.
If you have more than one partition, you may want to use partitioning software to increase the size of the OS partition.

thanks, there were some tricks i didnt know. i guess with the sync-files i can save some Gb's. Or is it possible to tell him, that he shall not put synced files on C: ?

Well i recognised that. Isnt there a way, that every file a program brings is installed where i order it to insteady of messing up my windows partition?

If i use such a software i dont need to reinstall windows? that would be great, because it sucks to install all programs and drivers all over again.

Have a look at this tutorial at the link below for some ideas and be sure to post back with any further questions you may have and to keep us informed.


Partition Wizard : Use the Bootable CD

thank you, i will look into that.

Btw, thank you all for those ultra-fast replies .

You're welcome.

When you install software, it defaults to the C: drive (where the OS is).

In my case, I have a 60GB SSD and am limited on space, so I install to my E: drive, which is a much larger HDD. You can change this (filepath) when you install anything.

~Lordbob

I do this. I even changed the default-install-path in the registry, as sometimes programs dont ask where they are wanted to be installed.