Would it be advisable then, when I have actually bought the thing, to transfer everything that is already on my chocker internal hard drive to it, to free up space. IE all my games, photos, songs etc etc?
No, not in my opinion anyway, doing so could present other problems, though you could completely re-install games for which you have the software onto the new drive, after uninstalling them from 'C'. Only put on stuff for which you have the originals, onto the new drive.
I would also advise you to use something like Acronis True Image to do a complete backup of your 'C' drive to your shiny new external drive - that is the main reason I got mine.
PS ..... when installing stuff to your new drive, make sure that you direct the installation to your new drive - i.e. during installation change C:/ to whatever letter your new drive is... or Browse to your new drive for the game etc installations.
Incidentally many of the external drives come formatted as FAT 32 to allow them to be used on older operating systems. FAT32 has small partitions and many with XP reformat to NTFS. For the reasons click here
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