swapping ps3 hdd

if i get a new ps3 and put the hdd from my old ps3 in it will all my game saves work?

Or if i transfer all my saves between the two hdd?

Yes, you have to transfer your save files from the old HDD to the new one.

Use a flash drive to back them up.

is it possible to do this with one ps3 since my old one is broken?

Yes, you just need a way to get the data from your HDD onto your computer or flashdrive.

I don't know what the devices are called... that's all I really know about the matter, sorry.

thanks for the help i'll google to find something that can do that