my SSD is already running out of space

Hi,
Hiberfil.sys
As you have a SSD, you don't need hibernation or fast boot, so you don't need hiberfil.sys.

To remove that:
Open a command prompt as administrator and run:

powercfg /h off

I guess you only have one partition on your SSD. Best practice is to keep all your personal data off C: so you can do OS maintenance without risking losing your data.

Nothing forces you to use Documents, Videos, Photos - the default libraries at all. So you can use folders on your other drive.

Programs (not universal apps)
Whilst most of these can be installed with the path specified as (say) D:\Programs\...... this isn't a great idea, as usually there are plenty of folders, files and registry entries created on C: other than the primary installation folder.

Exceptions would be particularly large programs, typically games. Programs you don't mind reinstalling if necessary. So you can be selective here.

Used Space
Use tools to check where your space is going such as Windirstat (free).

Clean up
Use Ccleaner (free/commercial), and run it periodically. Don't forget to check through its options.

Defaults

Also, my PC is set so it defaults to saving/installing onto the SSD, something I need to change.

You may be able to change the 'save' default of some programs.
Don't try to change the default for program installation (exe's).

Universal Apps
There is a tutorial that allows you to change where universal apps are placed, but note the limitations carefully and consider whether you wish to do that.

(Note these use a different paradigm- no exe's, dll's, registry or parameters)

Disk Imaging
Please seriously consider this to secure your PC and your data. Disk images let you recover from many bad situations quickly and without technical help. E.g. Macrium Reflect (free). Don't leave it too late.

david1806 said:

I wondered, should I install other software on the SSD, or the 1TB, because my SSD is already running out of space. Any comments on how people use their two drives would be most appreciated.

There are many ways to go about moving files without need of extravagant tweaks or software depending on wants and needs. The simplest way is just to move the files and folders you want to another more spacious drive is a simple cut/copy paste job.

However for programs / system files I would NOT advertise cut / paste as this can cause system problems. If you want to move an installed program like say Photoshop from say C to D drive, it's best to uninstall and reinstall to a new location. This is because when you install a program, there are registry entries installed in the registry. Simply cutting a program and moving it elsewhere doesn't move those registry entries and thus now a cut program pasted somewhere else becomes broken cause it can't find its required registry entries. (keeping things simple). In this case, it's best to uninstall and reinstall the program in the location you want. User created files and folder like Word doc, photos, music files can easily be cut and pasted anywhere. Programs like Photoshop can't because of the registry entries.

The other way of moving things is moving OS folders to other drives like that linked in TrashZone's post. I personally like keeping all my OS files and folders on the same drive to include the Pictures, Documents, Music, and Videos folders. If stuff in the Picutres or Music folder gets too large I'll move them to save space. This is why, given today's prices for SSD drives, I wouldn't advertise anything less than a 256gig SSD drive. You can still keep the OS together, and add another HD for holding overflow and installing other programs likes games to another added larger drive.

david1806 said:

Also, my PC is set so it defaults to saving/installing onto the SSD, something I need to change. Could you point me in the right direction...??

During install of a program, you can tell it where you want to install by usually choosing "custom install" choosing where you want to program or game to install. Say you want to install a game - instead of letting the game install on C-Drive, you can instead choose "Custom install" and tell the game to install on D or a drive of your choosing. I do this all the time for my games because my C-drive cannot hold my entire game directory nearly 1TB of games.

I've also got all my music files on a different drive, even though the "Music" folder is located on C-Drive. That even though iTunes for example will install some files and folders to the Music folder on C, the actual music files are on my H drive. I simply tell iTunes to look in that folder to play music.

Again, plenty of options, it just depends on what you want to do.

I would consider using OneDrive to save your documents to and upgrade to the latest version so you get the files on demand feature.

It's not as useful as it was with HDDs.
Resume could be faster than boot with a HDD but boot up time with a SSD is fast.
SSD + sleep is usually adequate (esp. with a laptop with a battery) - but yours is a desktop.
Ultimately it's a trade-off- are you fearful of power outages if using sleep?
You have a small SSD, so it's a space saver.
(Try running Windirstat (free) as per my post and find hiberfil.sys).

See discussion on net: (but these days you can ignore arguments about excessive read/write) e.g.
Hibernation - turn off - why? (except for capacity) | The SSD Review and Technology X Forums