Thanks Red

I have an external HDD I use for weekly backups. Would that serve just as well, or is it a speed thing with memory sticks?

The external drive has about 150 GB free of 500.

Its very precious to me, though, since apart from being my laptop backup, its the only remaining record of all the writing and art I did on my old machine - a copy of the surviving hard drive from a RAID system I fried a couple of years ago, and I don't want to use it to boost performance just for a couple of maps if there's any risk to the rest of the data I've got on there.