unable to created spanned volume

You could...
- move your whole user profile to the 2Tb disk (not a choice I'd personally make) - tutorial available
- relocate the default library folders (Documents etc) to the 2Tb disk (not a choice I'd personally make- people have broken things making mistakes when relocating these - others (who didn't) are happy) (tutorials available - disk imaging strongly recommended beforehand as per the tutorials just in case).
- create your own user folders on the 2Tb disk and use those in place of Documents, Videos etc - and add these to the libraries or create new libraries as you wish - my preferred option as it leaves Windows' defaults alone.

Suggest you examine your disk usage to see where your space has gone. I have several hundred programs installed on a 256 Gb SSD and still have plenty of space. But some e.g. games can be large I suppose.

Wiztree (free) can give a great view of disk space (tree and cushion map views).

I have my personal documents on a 2nd disk.

mhann said:

unable to created spanned volume
is there an easier way to do it ...

I hope you don't mind but I'd suggest an entirely different approach to managing your disks.
1 Accept that the OS and your applications are on your boot disk
2 Use your additional disk for just your own files. Regard it as purely a data disk.

This will allow you to have a decent backup policy.
1 Use system imaging for your Boot disk [your OS disk].

- A system image can turn a disaster into a mere inconvenience.
- By limiting your OS disk to OS & applications, your system images will be small because they will not include the great mass of data files you might build up over time.
- You might well make a new system image every month [before Patch Tuesday installs a new Cumulative update].

2 Use any one of a number of available methods to back up your additional disk, your data disk.

- Whilst you might choose to use disk imaging for this, you do not have to.
- Data backups can be as simple as making copies of everything onto an external disk.
- You might well back up your data daily or even several times a day.

my ditty - File backup vs imaging, imaging utilities, backing up drivers [post #3] - TenForums

[system imaging = disk imaging. People just tend to use the term 'system imaging' when its the OS disk & 'disk imaging' for other disks.]

Welcome to TenForums,
Denis

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It's really worth making time to browse through the Tutorial index - there's a shortcut to it at the top of every page.

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... I think that's one approach I suggested...

There is the option of using the larger SSD as the system disk as said above, but it is a good move to keep personal data off C: for O/S maintenance reasons.

dalchina said:

... I think that's one approach I suggested...

Yes. I decided to help the OP by addressing the subject from the perspective of backup planning.

All the best,
Denis