Ok ,if some noob like me 
need to put FSD on internal 4gb on 4gb slims ,and boot it as default,should do this:
1. Format usb stick as FAT32
2. Put FSD folder in it,and another copy of FSD folder like FDS_COPY (use fsd 2.2)
3. Boot to FSD and go to file manager
4. Open usb stick in file manager LEFT windows and internal MU on the RIGHT window
5. Mark FSD_COPY folder on the left,press and hold RB and press A to copy it to the right
6. Mark FSD_COPY on the RIGHT window and rename it to FSD (via RB button)
7. Go to multibuilder where you made nand. In folder 14699 delete launch.ini if u have it and in launch_default.ini search for DEFAULT and instead of "default=Usb:\FSD\default.xex" write "default=IntMu:\FSD\default.xex" (easier than choosing option 2 in multibuilder)
8. Make nand again also with default options like before nad flash nand with xenon.elf and this new nandflash,bin .
9. Power off console,wait for 30 seconds like suggested in RGH instructions when flashing nand and thats it.
The reason od FDD_COPY is that when you boot FSD from usb it makes some db data in FSD folder and cannot copy it to internal memory so a clean fsd folder needs to be copied.
If you want to boot normal NXE ,just press RB when xbox360 logo shows.
Note: I realize a lot of people say that its not good to put FSD on internal,but i wanted to try fsd 2.2 and on my slim works great. For now,we'll see later
Note 2: If you dont want FSD to be default but an alternative,you can write "BUT_Y = IntMu:\FSD\default.xex"instead of "BUT_Y=FlashMu:\FSD\default.xex" in launch_default.ini , and make new nand.
If you do this,now you can boot FSD with pressing button Y when xbox360 logo shows. If you dont press it,normal NXE will boot.
This method also doesnt require usb stick anymore.
Just my 2 cents, maybe someone can use this.
---------- Post added at 16:35 ---------- Previous post was at 16:33 ----------
Edi: FSD = FreeStyleDash
need to put FSD on internal 4gb on 4gb slims ,and boot it as default,should do this:1. Format usb stick as FAT32
2. Put FSD folder in it,and another copy of FSD folder like FDS_COPY (use fsd 2.2)
3. Boot to FSD and go to file manager
4. Open usb stick in file manager LEFT windows and internal MU on the RIGHT window
5. Mark FSD_COPY folder on the left,press and hold RB and press A to copy it to the right
6. Mark FSD_COPY on the RIGHT window and rename it to FSD (via RB button)
7. Go to multibuilder where you made nand. In folder 14699 delete launch.ini if u have it and in launch_default.ini search for DEFAULT and instead of "default=Usb:\FSD\default.xex" write "default=IntMu:\FSD\default.xex" (easier than choosing option 2 in multibuilder)
8. Make nand again also with default options like before nad flash nand with xenon.elf and this new nandflash,bin .
9. Power off console,wait for 30 seconds like suggested in RGH instructions when flashing nand and thats it.
The reason od FDD_COPY is that when you boot FSD from usb it makes some db data in FSD folder and cannot copy it to internal memory so a clean fsd folder needs to be copied.
If you want to boot normal NXE ,just press RB when xbox360 logo shows.
Note: I realize a lot of people say that its not good to put FSD on internal,but i wanted to try fsd 2.2 and on my slim works great. For now,we'll see later
Note 2: If you dont want FSD to be default but an alternative,you can write "BUT_Y = IntMu:\FSD\default.xex"instead of "BUT_Y=FlashMu:\FSD\default.xex" in launch_default.ini , and make new nand.
If you do this,now you can boot FSD with pressing button Y when xbox360 logo shows. If you dont press it,normal NXE will boot.
This method also doesnt require usb stick anymore.
Just my 2 cents, maybe someone can use this.
---------- Post added at 16:35 ---------- Previous post was at 16:33 ----------
Edi: FSD = FreeStyleDash
