How to re-allocate Hard Drive space from storage partition to operating partition.

[buffinator]

Hi, Been running windows 7 on a PC and originally I had three partitions, C: 200GB winXP64, E: 100GB Win7, F: 650GB data.

The C-dive os got corrupted a while back and I ended up just clearing out the winXP64 files and using it as a data partition so it has around 100GB free atm. On the other hand my E: win7 drive is now full at 99.9GB/100GB. I cannot figure out what is eating all of my storage. I turned off hibernation and deleted the hibernation image to reclaim about 8GB and after a week the drive is full again. I'm tearing my hair out cause I'm not sure what to do as having my now default E: drive constantly full stops a lot of programs from working.

I unallocated around 50GB from my C: drive hoping I could just add it to E: but it seems not to like that.

So, I either need to help to figure out what is wasting so much space on my E: drive, or I need help with how to reallocate hard drive space, or I could potentially put a new OS on my C: drive and abandon the E: drive OS.

Thoughts? My competence level used to be moderate but has degraded to sub-novice since I last fiddled with computery things but if someone can point me down an interesting path I could follow it pretty well (with lots of well documented wiki's lol)

Update 1: 4/15/16
In trying to locate wasted data I noticed my windows files were consuming around 50GB. I felt pretty comfortable killing anything in a "Downloads" or "Temp" folder or subfolder and freed up 10GB

 

[Colif]

you can use disk management to shrink/extend partitions (though it wont delete C drive, as it recognises it as an old win 7 install)

See here: http://www.howtogeek.com/howto/windows-vista/resize-a-partition-for-free-in-windows-vista/
it says vista but it works on 7.

What make hard drive is it? you might want to run hdd tests on it, it shouldn't be eating space like that. Try running chkdsk on it too.

 

[robehou]

I would just find out what's putting so much data on your drive, correct that and then delete any unwanted data. I like to use space monger from Stardock. It gives you a visual representation of exactly what files are located in what space. It's great because you can dial down to a single file and open it from the program just by a double click.

Next, I'd use process explorer to figure out in detail what is running on my computer and shut them down if you aren't using them. Correct your start programs too. Only have a few programs you need just after logging in and keep the others quiet. Use computer management or task manager or many 3rd party apps such as Norton to check off what's going to open with windows and what will not and what is delayed- all by your instructions. To close running programs use task manager or process explorer.

I'd also get a network monitoring program to see what is downloading and filling up the drive. There's so many odd things it could be and this can give you detailed info on what's happening. There's so many to choose from. I get mine at bleeping computers it's called Glasswire or something similar sorry. There are other ones there and if you want to get real into details there's a site called solar winds that has anything anyone could possibly need in monitoring networks.

I hope some of that works for you.