The Dummy BDEmu occupies only 2MB on your USB device, then after you can partition the remaining space as you want.

How to Create and Emulate Dummy_BDEmu Your BD Player Broke on CFW DEX Tutorial
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Guide source: http://www.ps3news.com/forums/ps3-hacks-jailbreak/ps3-debug-test-firmware-3-50-3-60-updates-leaked-119803-25.html

In this tutorial PS3ITA will guide you with all the necessary steps to achieve the "dummy_bdemu" directly from the console. This procedure is useful to all users who use a CFW DEX (debug / test) on a console that has the blu-ray disc broken or simply for those who do not want to wear the player's lens for intensive use.

In fact, the "dummy_bdemu" is to appear on the XMB icon BD player despite the absence of the disc, increasing, therefore, the compatibility of our backups are initiated by the backup manager multiMAN.

Below is a comprehensive guide designed, documented and tested in detail on CFW 4.21 PS3ITA DEX:

Disclaimer: Attention! PS3ITA assumes no liability arising from incorrect use of these procedures and for any damage that the console could suffer. Use the procedure at your own risk!

Disclaimer 2: Warning! PS3ITA not instigates and does not support piracy in any way, the procedure is posted only to illustrate the operation of the emulator of BD player in a console for DEX then start the games legally purchased!

Part 1: Guidance on the preparation.

Console (NOR \ NAND) with any CFW DEX (the entire tutorial was tested on CFW 4.21 PS3ITA DEX)
A usb stick formatted in FAT32 with at least 3mb available
(If you prefer you can do before a disk partition using a PC, consider that this key will be connected to the console every time you want to emulate the BD player)
Last backup manager multiMAN
PKG Install_Fake_BDEmu be installed on a console with DEX cfw:

Part 2: Creating the "dummy_bdemu."

Step 1. Download the PKG Install_Fake_BDEmu
Step 2. Enter PKG just downloaded into your USB stick formatted in FAT32:
Step 3. Enter the same usb stick formatted in FAT32 into the USB port of your console and install the PKG from (XMB) -> (Game) -> (Install Package Files):
NOTE: The following steps format your usb stick formatted in FAT32 in a format recognized only by your debug console and not a PC, this will take only 3mb of total capacity, if you want to go ahead and make the first partition a disc using a PC
IMPORTANT: After the first run of PKG you should not delete it. E 'can recover formatted data on your USB stick when started for the second time ... the choice is yours!
Step 4. Choose your USB stick formatted in FAT32 (this usb stick must always remain connected to your console every time you want to emulate the BD player), put it in the far right of the console port:
Step 5. Start now PKG "Install Fake BDEmu"
Step 6. After refreshing the console you will notice that your pen drive is no longer recognized as a removable disk (procedure performed correctly) and the application "Install Fake BDEmu" has turned into "Remove Fake BDEmu (second confirmation of procedure performed correctly):
NOTE: From now on your USB stick is formatted in a format recognized only by your debug console (with certain settings) and not from a PC.
IMPORTANT: You should not delete the application "Remove Fake BDEmu" if you want to recover formatted data on your USB pen ... the choice is yours!

Part 3: Debug settings and use the emulator.

Step 1. Go to (XMB) -> (Settings) -> (Debug Settings) -> (Blu-ray Disc Access) and set "BD Emulator (USB)":
Step 2. Then go to (XMB) -> (Settings) -> (Debug Settings) -> (Transfer Rate Pacing for BD Emulator) and set "HDD Native"
Step 3. Now for the changes to turn off the console and paying particular attention to leave the usb stick into the port on the right (the one previously formatted USB stick from the "Install Fake BDEmu", see Part 2 to Step 4).
Step 4. Check that your BD player is properly emulated (XMB) -> (Game):
Try to start well, as standard procedure, a backup of your game (also from external hdd) through multiMAN ... you will notice that the backup has been successfully emulated icon of your BD player in turn also emulated above (despite the absence of a disc inserted in the drive)!

IMPORTANT:
Before you turn on the console, remember to always insert into the USB port further to the right the usb stick created to emulate the player (if inserted after power will not be recognized).
At a later time if you do not want to emulate your reader with this pen usb remember to reset it with the application "Remove Fake BDEmu" to restore any of the data originally present on the USB stick.
When you do not emulate your reader with this pen usb remember that you have altered settings 2 Debug (see Step 1 and Step 2 Part 3), check whether to restore or not.

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