The hidden partition you are not seeing is the EFI partition. It contains the boot loader programs for all operating systems installed (in other partitions) on the device, device driver files (used by the firmware at boot time) for other devices, and system utility programs that are intended to be run before an operating system is booted. Make sure you are clicking on the actual drive when you are creating a partition...and not the drives name. Under Volume Scheme select 1 Partition. Under options select Mac OS Extended (Journaled). Click Apply. Don't worry about the format, as it will happen automatically in the next step. Another thing to try is to power off the machine...then hold the "D" key as you boot and test your hardware.
You are booting from the DVD drive correct? and not trying to partition your boot drive while in Mac OS...right?
I am going to have to agree with everyone else that your Disk 1 is not correct or corrupt.
This is from the Manual that came with your PC:
Reinstalling the Software That Came with Your MacBook
You can use the software installation discs that came with your computer to reinstall Mac OS X and any applications that came with your computer.
Important: Apple recommends that you back up the data on your hard disk before restoring software. Apple is not responsible for any lost data.
Installing Mac OS X and Applications
To install Mac OS X and the applications that came with your computer:
1 Back up your essential files. Because the Erase and Install option erases your hard disk, you should back up your
essential files before installing Mac OS X and other applications.
2 Make sure your power adapter is connected and plugged in.
3 Insert the Mac OS X Install Disc 1 that came with your computer.
4 Double-click Install Mac OS X and Bundled Software. To install only the applications
that came with your computer, double-click Install Bundled Software Only.
Note: To install iCal, iChat AV, iSync, iTunes, Safari, and the iLife ’08 applications, double-click Install Mac OS X and Bundled Software.
Follow the onscreen instructions.
After selecting the destination volume for installation, continue following the onscreen instructions. Your computer might restart and ask you to insert the next Mac OS X installation disc.
Note: To restore Mac OS X on your computer to the original factory settings, click Options in the “Select a Destination” pane of the Installer, and then select “Erase and Install.”
You don't have any other peripherals plugged in while doing this correct?
No offense taken...what I am saying is the install DVD may not appear to be working correctly. The DVD preloads information into memory before the first screen appears to you. Is it not possible for something to be wrong with the DVD? You should have been able to do the "D" test if that was the DVD that shipped with your PC. If it is just a standard Leopard DVD, it will never happen. It is very possible for your hard drive to be bad, but it doesn't make sense to me why you are not able to do that particular test. Are you holding down the "C" key while booting up? What happens when you do?
I just noticed an earlier post of yours "...With the dvd ejected, holding either c or d when powering on gives me the flashing folder." This needs to be done with the DVD in the drive. Also try holding the option key down while powering up the computer. This will give you an option to boot from the DVD or Hard drive....The DVD is what you want here...
The 4sns/ is a problem with one of the heat sensors in your machine. I do not have a repair manual for this machine, but there are some really great guides on this site that tell you the locations of your specific notebook. Here is a link to the Apple forum addressing this issue: https://discussions.apple.com/search.jsp...