Quad Boot / Penta Boot on Samsung NC10 --> Windows XP - Windows 7 / Vista - Mac OS X - Linux

I've tried more than 100 times to get Quad Boot / Penta Boot work, and the following works consistently on Samsung NC 10.
I recommend you to take backup of all important data you will need, before you start your quad boot setup.

What you'll need?
1. Samsung NC10 (Netbook)
2. External DVD Drive (USB)
3. XP Operating System CD (Optional)
4. Windows 7 DVD / Windows Vista DVD
5. OSX DVD ( MSIOSX86.ISO or NC10_JaS.OSx86.10.5.6.Intel.SSE2.SSE3_Mysticus)
6. Ubuntu / Kubuntu Live CD
7. USB Flash Drive / Blank CD

Steps:
1. Download GParted (http://gparted.sourceforge.net/download.php)
2. Create a bootable USB of GParted (http://gparted.sourceforge.net/liveusb.php) or create a bootable CD of GParted
3. After creating bootable USB drive (or CD Drive) boot from the USB (or CD)

4. GParted will display 160 GB as a two partitions. Delete the second partition.

5. Right Click and Resize the first partition. Set it to 10 Gig (or whatever you want for XP)
6. Now you should see the remaining as unallocated partition. Click new and create a NTFS Primary partition for Windows 7 or Vista (I set this as 15 GB)
7. Click on New and create a HFS+ Primary partition for Mac OSX
8. Click on New and create an Extended partition for the remaining space. We will be splitting this later for linux and other drives as needed.
9. Click on New and create a ext3 Partition in the extended partition for Linux.

10. Apply Changes.
Note: You can have a maximum of 4 primary partitions. You can make 3 Primary partitions and 1 extended partition, although the extended partition can then be split to multiple partitions again.
11. Right Click on the first partition (XP) >> Manage Flags >> Uncheck Boot & Check Hidden
12. Reboot with Windows 7 / Vista DVD and Install Windows 7 / Vista in the second partition
13. After installation, reboot to GParted, Right Click on the first partition (XP) >> Manage Flags >> Check Boot & Uncheck Hidden

14. Reboot with OS X DVD and Choose Disk Utility from the Utilities menu.

15. Select the OS X partition, goto Erase tab and select Mac OS Extended (Journaled) and click Erase
16. Quit Disk Utility (Alt + Q) and proceed with installation. Click on Customize and check NC10 pacakage and Do not check Cleanup. Proceed with installation and reboot.
17. The system may reboot continuously. Press 'F8' Key and in the boot command type in "cpus=1 -v -f -x" then try "cpus=1 -v -f".
Once you are in OS X, open terminal and type sudo -s
Edit the /Library/Preferences/SystemConfiguration/com.apple.Boot.plist file as follows:
Under Kernal Flags, in the strings tag enter cpus=1 then save and exit

18. Reboot with Linux CD and install it on extended partition. I've used Ubuntu and Kubuntu installation.
19. After installation, Restart into GParted.
20. You can configure (could be a time consuming process) your favorite boot loader by setting the boot flag on the partition. For Example, if you want to use OS X Darwin -> Right Click OS X patition >> Manage Flags and check Boot.

Hope this tutorial helps!!!