So I got Vista RC1 and my beautiful MacBook was begging for an update [H]

BUT:
1st, I already had Beta 2 installed, and in order to get this done you need to delete the 200MB EFI partition.
2nd, there was a BootCamp update, which wont start if the EFI partition is missing

SO:
How the heck do I get back that partition?

After some googling around I found a couple of instructions:

Note: Doing this is very dangerous. I strongly suggest to backup all your data!

• Start Vista (from CD or from the Mac) and format the 200MB partition as FAT32 file system using Computer Management snap-in
• Reboot your Mac and hold Command-S. Now you are in "Single User" mode - feels like a completely different world here [:D]
• Type "fdisk /dev/rdisk0". The Mac partition (2) should start at 409640. Note: if this isn't the case, don't continue!
• Considering the previous command showed the expected output, type "edit 1"
• Answer "EE" to the prompt for System ID, "n" when prompted about editing in CMS mode, "1" for the start block and "409639" for the length
• Verify your settings with "print" and commit with "write" - you can cancel the procedure with "exit"
• Reboot and start the BootCamp assistant

This worked for me and I am using an Intel MacBook. And, almost forgot, when using RC1 you do not need to delete the EFI partition anymore!