Owning a 60GB launch PS3, my HDD space has now become so limited im having to delete, re-install(repeat etc.) game saves when i get a new game.
Just to be 100% clear, I believe you meant to say "game data", as game save files
(located in the Saved Data Utility folder) are almost always very small, like KB size and not even MB size. So unless you have thousands of game saves, copying them to a flash drive isn't going to help you much.
Game data, on the other hand,
(located in the Game Data Utility folder) are the files that some games require to be installed on your HDD, including any DLC add-ons that you download from the PSN store. Some of these files can be huge. However, they are copy protected
(for obvious reasons), and so you can not copy them to an external drive of any kind, with a couple exceptions.
You can use the PS3
Backup Utility, but that will copy everything on your HDD as a single file, and to use it, you have to restore it, which will replace whatever is on your HDD, so in your case it wont help you in trying to manage your disc space.
You can also transfer all the contents on your HDD including copy protected files to another PS3 using the
Data Transfer Utility, but again, that won't help you in this case.
So, basically, as has been mentioned by others already, you have two choices.
- Keep deleting and re-installing game data and games when ever you need to make room.
- Replace your HDD for a larger one.
Seeing as you will only need a USB drive to backup the contents on your HDD in order to restore it to the new HDD, perhaps you can find a friend who will lend you one just to do the transfer of data. That will save you from having to buy one, and thus apply the money you would have spent on the external drive towards a new HDD.
However, if you really did mean to say game saves, then as to your question:
My question is: if i were to get a USB flash drive(around 20GB), would it be possible to simply transfer game save data from my PS3 to the flash drive, then transfer it back as an when needed(a bit like the memory cards for the PS2?)
Yes, almost all game save files (not game data files), can be copied individually onto any type of external storage device you like. There are a few games that have copy protected game saves which can not be copied individually.
However, I'm confident that you'll find that game saves are so small, that even if you had a lot of them, it's very unlikely it would save you that much disc space to copy and then delete them.