Booting from Disk, and still getting errors

[wafflehead77]

Hello everyone. I hope this is in the right section.

Anyway, I am attempting to fix my gf's Macbook Pro w/ 10.4. She had tried to reinstall the OS a few weeks ago, and I think the installation was bad.

So, her computer ended up not booting, and just sitting on the start-up screen.

I decided I would try a full reinstall, with formatting and everything. I backed up her files, and could not get them to delete from her harddrive using my computer (when linked via firewire). So, I booted from the disc, erased her drive, and formated in Extended Journaled.

I tried to install the operating system, on what I assume is a clean harddrive, but about halfway through, it keeps failing. I went into disk utility, and the harddrive says "verified" in the S.M.A.R.T section, but whenever I run verify, or repair, I get an error message saying "Could not unmount disk".

I searched the forum, and there are topics concerning this message when accessing disk utility normally, but nothing about this message appearing while running from the OS disc, on a fresh harddrive.

Any suggestions, comments? I have tried everything I know of (which is not much), with no success.

Could this error e the cause of OS installation failure? If not, the only other thing I can think of is that the actual dvd is bad, but it looks fine to me.

Thanks for any help.

[Satcomer]

Sounds like the hard drive went south.