SL install seemed to fail - now my MBP can't boot from HD or SL DVD

H E L P. Just bought SL family edition - upgraded my iMac 24 - worked fine so then I tried to upgrade my MBP (2+years old). At first the MBP just ejected the SL DVD - found lots of similar issues on this board. I finally got it working by holding my MBP at an angle while inserting the DVD - the install commenced. Since it would take some time I left the room and came back some time later (< 1 hour) - the screen was blank so I thought it had finished and gone to sleep. I had a lot of trouble waking up my MBP but finally it started to re-boot. It ejected the SL DVD then (I presume) tried to boot from the HD - this failed - screen just showed a folder icon with a question mark in it. So I assumed that somehow the SL install had not run to completion and the Mac OS image on the HD was corrupted. So I tried to boot from the SL DVD - this seemed to start working - screen shows Apple logo and spinning wheel for about 45 seconds (just like any normal boot) but then the screen goes blank and nothing happens. By holding down the power button for 15 seconds or so - the boot restarts but the same thing happens.
So now the SL DVD is "stuck" in the player and I'm not sure what to do next. I was going to try my Leopard disk (thinking maybe the SL DVD was dodgy) but I'm not sure how to eject the SL disk. It's Sunday here so I can't call the Apple support center and the Genius Bar at my local Apple shop is booked out until next weekend.

Before anyone jumps in I have fixed the problem - found it in the Snow Leopard forum. Issue was screen was too dim to see anything. As a result I must have accidentally aborted the SL install which corrupted something so I had to re-install from the SL DVD but it looked like that was not working due to the dim screen. VERY irritating to say the least - lost many hours on this.

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I have just replaced my hard rive in my 15" MBP.I have loaded lion back
via Internet . I then restored from my old hard drive. Now the MBP
won't boot
What do you see on the screen when it doesn't boot??
Gray, Blue or White screen at boot, w/spinner/progress bar
or
Folder with question mark issue?
How did you restore from your old hard drive?
Technically all that was needed was to use Migration Assistant on the fresh OS X install to migrate users accounts and programs to the new machine.
You can use a SATA to USB adapter to connect the old drive if you want to go that way and start over with a fresh install again on the new drive.
Reset your Mac

Can't boot from harddisk following fresh install, corrupts files

Hello all,
(Macbook Pro, Core 2 Duo 2.2, 4 gb ram upgrade, otherwise stock)
So, this all started with the combo updater. I repaired my permissions and tried installing the combo updater for 10.5.7. It failed, saying the package it was installing from was corrupt. So I downloaded it again, tried again, same error. I figured I better restart. Kernal panic. Same for all subsequent restarts.
Booted from Leopard DVD, repaired permissions, that worked, then tried to repair disk, failed, couldn't do it. Tried rebooting, still no good. Gave up, formatted the hard drive (Mac extended w/ journaling). Rebooted from DVD again (installer couldn't see the drive, odd) installed Leopard.
But now every time I try to boot from the disk I get stuck on the gray screen. Reset PRAM, no good. Tried safe mode, it gets stuck at the same screen. And when I repair disk permissions I have new errors, and now it again cannot repair the hard drive.
So I can't boot from the hard drive, and when I try it corrupts my disk. I obviously need some help from someone smarter than me, any takers?
Justin

I would try removing one stick of memory and attempting to reinstall. If it appears to work, add the other back and try to reboot. If it fails on one stick, then try the other. This way you can at least eliminate if its a HD or ram issue.
It sounds like a drive issue, but swapping out ram is easy and can eliminate a lot of other potential causes of the problem.
Good luck.

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Perubbit,
which model MacBook Pro do you have, and which version of OS X is installed on it?

Can't Boot From Install Disc 1 ?

Holding down "C" at Start Up isn't working.
Most of the time I can't get Preferences > Start-Up to even "see" my Disc 1.
When I can get it to show up in Start-Up, and Select it, and Lock it ... it Still Won't Start Up from the Install Disc 1 ... and in fact usually ejects the disc.
Sometimes when I re-push in the disc, I get the message that a Blank Disc has been detected, "what do you want to do with it."
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The Disc has Mac OS version 10.4.8 on it. I'm running 10.5.7. I'm all up to date with my software.
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Disk Utility that can repair a 10.5.7 permissions is only found on the Leopard installer disc. Tiger can't repair Leopard when it comes to permissions, and may also have difficulty with the directory.
Secondly, if your MacBook Pro was purchased after October 26, 2007, it can't boot from any Tiger disc.
If your MacBook Pro was purchased prior, you can use the disk, but you'll want to follow these directions for hardware diagnostics:
http://docs.info.apple.com/article.html?artnum=303081
Only if your MacBook Pro has Tiger installed, should you use Tiger for the directory or permissions*:
http://www.macmaps.com/directoryfaq.html
Macs can only boot from the operating system that shipped with them, and newer retail operating systems. This means:
1. pre-October 1st, 2007 MacBook Pros can boot off:
- - the discs that shipped with them
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2. October 1st through October 25, 2007 can do #1, and also use Upgrade and DropIn discs. Those disks were offered as a limited time mail order Up to date program, some were dropped in the box that came with them.
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4. November 15, 2007 through June 29, 2008 can boot off the discs that came with them, and the retail 10.5.4, and 10.5.6 discs that do not say Upgrade, DropIn, or OEM, and have a label like the image above.
5. June 30, 2008 through December 14, 2008 can boot off the discs that came with them, and the retail 10.5.6 discs that do not say Upgrade, DropIn, or OEM, and have a label like the image above.
6. December 15, 2008 and later MacBook Pros can only boot off the discs that came with them.
Presumably when Snow Leopard comes out in September, all of the above will be able to use Snow Leopard because of the specs on http://www.apple.com/macosx/specs.html
- * Links to my pages may give me compensation.
Message was edited by: a brody

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Hi db2
That off the shelf MS-DOS / FAT-32 drive needs to re-partitioned GUID Partition Table / Mac OS Extended (Journaled) before you can install OS X and Startup your Intel iMac from it.
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3. Under Volume Scheme select 1 Partition and click on the Options... button.
4. Select GUID Partition Table in the drop down window and click OK.
5. Set the Format to Mac OS Extended (Journaled) and click the Apply button.
6. Once thats done, then you can do a clean SL Install, Restore from TM , your old HD or Bootable Clone.
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