نعم يا صاح يمكنك اللعب مع خارجي
But i recommend you to use an ssd faster in the loading and increase the performance in heavy games like gta v. AND the More important it didn't heat like the hdd
So this your choice at the end
put to play you have to jailbreak your ps3 with hen or rubug(custom frameware) any thing of those the tow can run multiman all we need in the internal hdd is the multiman okay
now go to any site any game you went
i strongly recommend this site's for you
romsfun/ROMs pure/ps3iso
This site's are perfect all games i tried from this site's and the game's are full and works fine without any problems
Make sure you download game's with the DUPLEX format this the format of multiman game's and iso to but all iso game's work good so just download the dublex format
Use your pc to download the game's and extract them ok
Connect your external hdd/ssd to your pc and FORMAT it on FAT32 don't use it with the NTFS format because ps3 didn't read the NTFS fiels
Now after the format creat a folder in the external hdd/ssd and this folder name it (GAMES) you should make the litters big like this
GAMES) this make another folder inside the GAME'S folder and name it by the game code you went to play The game code is the name that the game folder have its like: (BCUA02930) and make sure again the letter's be big and don't miss any number or letter if that happen the game will not popup in multiman
final step copy folder called (PS3game)
To the folder that named by the game code don't copy any more folders even the dlc 's too just copy the ps3game and don't worry this way didn't make any issues with the file's coping in the external hdd /ssd because we all know the fat 32 format didn't able to copy file's than more 4gigabyte but if have any problem with the game size use ps3 splitting app
This map will help you alot
usb>GAMES>game code folder>ps3 game
And that's it go to finall step
Connect your external hdd/ssd to your ps3 in usb slot 2 not 1 and enable hen and go to multiman if you have the rebug go to multiman don't serch on hen in your system
You opend the multiman the game will appear press X on the game icon and
There be massage will be appear maybe for one's or towice on my system its apear for towice and after this massage the xmb will popup and go up you will see a cd press X on the CD icon and the game will run and enjoy your game
Sorry for long comment