When ya done installing Win 7 - 64, it takes up a bit over 20 GB ..... do the SP and all the updates it will grow ..... every time you install a new driver, new program, new anything, it will get bigger .... regardless of the target location. When you upgrade or uninstall something from Windows, a lot of it doesn't really go away. It's stored in hidden locations. Emails, temp files, error files, log files grow and grow.
And astute windows user with good knowledge and using an average number of programs will have a Windows boot drive of about 60GB within 6 months to a year.
when i download stuff like google chrome and league of legends and microsoft security essentials im supposed to install them all in my ssd so they run faster right? what the heck should i be putting on the hdd?
No.....
The typical install procedure is:
1. Install OS to SSD
2. Install Drivers and run Windows Update to SSD
3. Install programs to Hard Drive
4. Reboot and run Windows Update and many programs install C++, Net Framework and other goodies which can be updated thru WU.
Your SSD is limited in size .... mine has 62 GB of space used and that may be a bit large except when you consider that many Adobe and AutoDesk programs install a lot of stuff in "CommonFiles" folders on C:\. i spend about 30-45 minutes a month just "cleaning" the C:\Drive and doing system maintenance.
Based upon your questions, it would appear that a separate SSD and HD may not have been the best choice. Seagate's new hybrid SSHD (SSD and HD in one component) gives you 10 second windows boots and has 2 TB of storage and no worries about what to put where.
You can use various 3rd party tools to "clean" ya HD.... some like disk cleanup are built right into windows.....Steven Gould's Cleanup is a great little utility.
The SSD should be reserved for those things that you need to load and run fast ..... CAD programs, video editing are examples that take great advantage of SSD speed. Other than that, you system will boot about 5 seconds faster than it would from a HD .... that's really pretty much it. Typical office apps, web browsers, even games don't see much difference at all.
If you need something to go fast, utilize the space to your advantage ..... downloads should never go on ya SSD, pictures, documents, backups....never on SSD. I have had people come here with 6 month old builds and no room on there 128 GB SSDs and that's with consciously making an effort to install stuff to the HD. Some programs (i.e Adobe Reader download version) make ya work a little.
As I said above, unless you really need the speed, everything else should not be allowed to install anything to C:\ ..... just chnage it..... sometimes it requires you not to use "default" or "express" installation and instead use 'advanced installation".