Also the you must restart sql server

Yes the location is permanent, you can change size and location of the tempdb by using hint :

sqlservr -c -f

GO

ALTER DATABASE tempdb

MODIFY FILE (NAME = tempdev , size=220)

go

ALTER DATABASE...

So you can do the same think to restore your database on the new disk with the move option.

We have to move all databases to a new server last month with distribution. The best way i have found was to backup all databases and restored all db on...