To quote: Simply install pkg on 4.50 (CEX) CFW and run and your PS3 will beep 3 times and restart.
Find your root key in dev_hdd0/GAME/FLTZ00010/USRDIR
Tested & working by me
This is only for 4.50 (CEX)CFW
Update: Here is a small update which prevents displaying of warning message after reboot.
Finally, from aldostools: Beside the features mentioned by harryoke, this tool let you get the "eid_root_key" of your PS3.
The "eid_root_key" is needed if you plan to convert your PS3 from retail (CEX) to debug (DEX).
You will also need the "eid_root_key" to be able to read the content of your PS3 HDD on the PC (eg. to recover some files if your PS3 doesn't turn on).
If you want to get the key of your Blueray Drive to use an ODE device, the "eid_root_key" is needed too.
Before this release for CFW 4.50 (CEX), it was only possible on CFW 3.55 GameOS or through a tedious process using OtherOS.
On a side note: I released this PS3 HDD Hex Viewer (aldostools.org/temp/ps3_hdd_hexviewer.rar) based on a [Register or Login to view links] of 3141card's ps3 hdd tool with debug function.. this tool also requires the "eid_root_key".
As promised, you version with debug function.
ps3 hdd print <sector number> (show a sector in a simply hex-view)