I have to agree with AustrAlien and Eyesee as that is what I do on desktops. I'd do it on my laptops if I could. Not to mention it is easier and cheaper to clone a small drive than a big drive.
My desktop has a 300Gb boot drive and large drives for data storage. I use two additional drives since HD 1080i video files run big and two drives so I can render or author from one to the other for better speed. And a BluRay drive for backups and making BluRay movies now that the drives and media are reasonable for good brands. The build I did for my Brother is a 160Gb boot drive (SSD) and originally one 1Tb data drive now with two USB externals so he can have two backups.
All four systems also have a cloned backup of the boot drive. Needed for my brothers when he caught a virus. Easier to clone the backup back to his boot drive than fight a virus.
If the boot drive is getting full right now I'd bet there is plenty of data files that could be moved to the new drive. Not to mention as a form of insurance once the new drive is setup run the drive makers diagnostics on it to be sure it is good. And do not delete anything you copy to it for a couple of weeks just in case.
I'll give an example of why you need to check. I setup a small Proliant server with three drives in raid 5 for someone I know. They supplied everything including the memory upgrade. The Seagate drives must have had a bad journey. One had bad sectors and one kept at random giving loud bunches of clicks and the third was silent.
I gently suggested getting them all replaced. The Replacement Western Digital (RE3 markings as I remember) Server drives were fine. Both sets in the HP mounting and HP part number stickers.
New is not always good.
Edited by rotor123, 31 December 2011 - 11:09 AM.