Just checked 1024 is the highest it will go, but I only have a 30g hard drive. I do use Agent Ransack to search and clear out the files, again a habit from my dial-up days, old desk top only had an 8g drive and there's still 3g spare.
One of the mistakes I made I realise now should have gone for a bigger hard drive, but its not the end of the world its solvable should I need a bigger one. Other than that I'm very pleased with my lappy.