The hdd is encrypted, to manage contents on PC you need to have your EID_root_key (if i remember right), and use an app to access the encrypted partition, but that app is read only
You are in HAN i guess... so copying hdd contents is just half of the way... you dont have a way to copy the files back to the new/formatted hdd
And well... all this process becomes a bit complex
So better wait to find a replacement hdd to make a temporal test (from a laptop or whatever you find at home, heheh)
If it works, then unplug it and start looking at prices for a new hdd
The requirements is it needs to have 9.5 height max... sony has his preferences for low power comsumption (5.400rpm and only 1 plate) but this is not mandatory
And for the brand you can also follow sony preferences, see in this table, superslim hdd models are not listed but for the slims they was using
toshiba MK series
http://www.psdevwiki.com/ps3/Harddrive#Harddrive_Model_info
*Edit:
Just noticed in the page in wiki appears a
Hitachi travelstar series for the superslims... this one is good too, very low power/noise/heat, etc...