PS3 40GB YLOD. How to backup!? Deactivate HW?

[sirvice]

YLOD happened to my PS3 while playing FFXIII. I was around 25 hours in at chapter 11.

Ok heres the thing. I want my savegame before i sell the YOLD PS3 and then buy a new one.

So far i changed the password of my PSN Account via PC, in order that the automatical login process wont work anymore.

I exchanged my hdd i was using with the old, delivered, blank 40gig hdd.

Now i have some questions you might be able to answer and help me with:

 

For the selling part:

Is it now safe to sell the PS3? or do i need to perform further actions, regarding privacy and sorts? 

As it seems a PSN account can hold up to 5 Ps3s. Now i want to deactivate my YOLD PS3 from it. How am i doing this? Probably easier as soon i got a working PS3 again, right?

 

For the backup part:

Do i need to format my hdd before any other ps3 recognizes it? Or can i use my hdd from the Ylod one, without problems with the next one?

As it seems i have to make my Ylod PS3 running one more time in order to back up my stuff ( i know how im supposed to do that-> with new warm paste and an "industrial hair dryer"). Is this the only way possible to perform a back up without paying for a repair?

 

thx for your help!