Originally Posted by Grim Reaper
If it can't be upgraded. Than I'll stick with my slim. That I already upgraded to a 500gb hdd long ago.
Yes, you can still upgrade the HDD.
Prying open the top end of the casing reveals the hard drive bay, where we find a standard 5400rpm Hitachi hard drive - a Z5K500 HTS545050A7E380 model. It's a single platter 7mm drive but the bracket is large enough to support the more common 9.5mm units too.