What do you have on the drive just the OS? Do you install all Programs on the SSD? I would just install OS and antivirus + a few apps you need to open and use with speed.
Disable the system restore on the drive and turn off hibernation. Reduce the size of the page file and maybe move it to a secondary Hdd. Look up the SSD tweaks sticky on this forum for how to optimize it for more space.
He answered your question; read more carefully and learn the OS lingo; a simple google on the following will tell you exactly how to do so and will relieve a LOT of space without deleting folders; this isn't Win95 anymore, you can't just go deleting folders outright, and from the list you screenshotted, ONLY the Intel folder can be safely removed, but it will be very small in size. MSOCache is Office's source files in case you wanna repair/install other components/etc... everything else is critical; you delete, bye-bye OS.
- Disable System Protection; that thing will eat up a drive in no time flat.
- Disable hibernation; it's on by default even on a desktop (open an administrative command prompt and "powercfg -h off")
Disable swapfile if you have 4GB+ and don't do too much on your PC, 6GB+ if all you do is game, 8GB+ if you use your PC for heavy editing & such.
If ALL of those are still on, and you turned them off, you could potentially recuperate over 8GB
Some of those things I have already done, like disabling system protection and hibernation. The pagefile size thing is new to me, and I quick glossing over Google isn't fetching me much information.
I want to stop putting things in the OS drive when I install something. I thought a registry change was suppose to see that this happened, but it hasn't. I changed the Default Installation Directory to E: and sometimes things still end up in my Programs folders (can't I just move those contents over to the storage drive pretty safely, anyway)?
Look here, go to post 22 and you can follow the rest of the guide on the first page after that. This is how you move the user data and app data folders to another Hdd so that when users are created they go to the second hard drive. This will keep your ssd from taking up too much space with windows files. This ideally should be done before windows is set up, during the last phase of installation. This will also set default install directories on your second hard drive.
You can manually set install directory, but without following the procedure below, windows by default will put stuff on the C: drive too.
But what everyone else said, those folders are critical to the OS. If you manually delete them you may not be able to boot or have issues later.
I have 8gb ram and I do not want to move page file but I will reduce it to 1gb both min and max. I do a lot of intense gaming so I will need it. In last resorts moving the page file to the second hard drive is a good idea, but it may be hindering performance because pagefiles should be placed on a fast hard drive.
Others have disabled it and had no problems, but its all up to how much RAM you have and what you do on your pc. Besides following those optimization techniques, nothing else you can do to get more space.