I was on the facebook, macrumors, and engadget, when all of a sudden i got the beach ball and everything froze. I shut the computer down by holding the power button because there was no other way to shut down the computer. I waited 10 minutes for the beach ball to stop but it did not. I went to turn my computer on and nothing happened. I only got the gray start-up screen. I was like, "Damn, this can't be good." So I put in the OS X install disc and went to disk utility and this is what I got: Verify and Repair disk "Macintosh HD" Checking HFS Plus volume. Invalid B-tree node size Volume check failed. Error: The underlying task reported failure on exit I was told this was a software related issue and to do a complete erase of the hard drive and install of OS X. I did that and zeroed out all the data on the drive to get a fresh start. When I went to install OS X on the formated "Mac OS Extended (Journaled)" internal hard drive, on the screen for the install that says "Select a Destination," there are no volumes (hard drives) present. When I hook up my 160 GB Western Digital external drive, it appears as a volume but my internal hard drive does not. So I went online to find out what S.M.A.R.T. is and found that I could put a certain command in Terminal to find the S.M.A.R.T. status. In Terminal I put diskutil info disk0. I got: Device Node: /dev/disk0 Device Identifier: disk0 Mount Point: Volume Name: Partition Type: GUID_partition_scheme Bootable: Not Bootable Media Type: Generic Protocol: SATA SMART Status: Verified Total Size: 149.1 GB Free Space: 0.0 B Read Only: No Ejectable: No OS 9 Drivers: No Low Level Format: Not Supported I also tried to mount the internal disk using disk utility from the OS X install disk but I receive an error saying the disk could not be mounted. I have a SR Macbook Pro. Does this mean my hard drive is dead because it is "Not Bootable." This is an internal drive. Came with my Macbook Pro. It is a Fujitsu MHW2160BHPL Media. It had OS X installed. Any answers or suggestions are appreciated. Thanks in advance.