I wanted to re-install my mid-2010 15-inch MacBook Pro (Intel Core i7 2.66 gHz 8 GB 1067 MHz DDR3 RAM) which is currently running Mac OS X 10.6.8.
I inserted the retail Mac OS X 10.6 install disc, and held the C button on my keyboard to boot the machine. The disc can be heard spinning up, and the grey Apple logo appears. However, the computer hangs at that step, there was no grey spinning wheel and the installer never starts. After a few minutes, I can hear the disc SPIN DOWN, and the machine still sits at the Apple logo after more than 40 minutes.
To boot from the install disc, I also tried (1) holding down the Alt key during boot to choose the disc, and (2) using System Preferences to set the disc as the startup disc. However, the boot still hangs at the grey Apple logo.
To diagnose the problem, I tried other startup discs, including my retail Mac OS X 10.5 Leopard install disc. They all hang at the grey Apple logo.
Also, just to see if it was a problem with my optical drive, I followed instructions to use Disk Utility to make a disc image of the install disc, and "restore" that image to an USB flash drive. I am see and choose to boot from the USB drive when I hold down Alt during startup, but again it hangs at the grey Apple logo.
Next, I ran Micromat TechTool Deluxe that came with my AppleCard protection plan to check my hardware, all tests passed. I also held the D button during boot to run the Apple Hardware Test, again it found no problems.
Finally, I tried to reset the NVRAM with no success, and I used Disk Utility to verify the internal hard drive which produced the following message:
Verifying volume “Macintosh HD” Performing live verification. Checking Journaled HFS Plus volume. Checking extents overflow file. Checking catalog file. Checking multi-linked files. Checking catalog hierarchy. Checking extended attributes file. Checking volume bitmap. Checking volume information. Invalid volume file count (It should be 1071709 instead of 1071710) Invalid volume directory count (It should be 200209 instead of 200208) The volume Macintosh HD was found corrupt and needs to be repaired. Error: This disk needs to be repaired. Start up your computer with another disk (such as your Mac OS X installation disc), and then use Disk Utility to repair this disk.
I installed Applejack to fix the problem and scan my computer again. Nonetheless the problem remains...
Is there anything else I can do to get my MacBook Pro to boot from the install disc? Thank you very much!
P.S. As an additional test, I booted other Macs with the install discs I have, they all worked fine...