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10.6: A caution on changing brightness during install Install
Just a short tip for those about to install Mac OS X 10.6 Snow Leopard. When you insert the DVD to install 10.6, the installer does something a little different than previous installers -- it pre-installs a bunch of stuff onto the 10.4/10.5 machine before it reboots with the DVD to finish the installation. I guess this is done to speed up the installation.

Anyhow, during this process, do not be tempted to turn down the brightness of your screen while this is happening. I did that, and when the machine rebooted from the DVD, the brightness of the screen was turned down to zero and I couldn't see anything.

So, do not turn down the brightness, even one above zero (which is what I did), or you will be faced with a black screen because the brightness keys do not work in the installer boot. Fortunately, I had another drive with an installation that was able to boot my Mac, and I turned up the brightness and rebooted again to continue with the installation.
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10.6: A caution on changing brightness during install | 7 comments | Create New Account
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10.6: A caution on changing brightness during install
Authored by: palahala on Aug 28, '09 08:52:22AM

Actually, on my MacBook, if brightness is zero I can still see what's on the screen using a bright flashlight. (I used this when some "LCD Inverter Board" broke down some time ago.) Not a good working condition of course, but it may help one getting to a proper shutdown etcetera.



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10.6: A caution on changing brightness during install
Authored by: skippingrock on Aug 28, '09 10:02:05AM

Yeah, I thought about that too, but I didn't have a flashlight at the time. :)



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10.6: A caution on changing brightness during install
Authored by: awado on Aug 28, '09 11:09:43AM

Hm... just a quick guess: shouldn't a PRAM reset bring back the brightness?



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10.6: A caution on changing brightness during install
Authored by: powerdan on Aug 28, '09 05:12:33PM

I had the same problem on my MacBook Pro. Keyboard entry of Function F2 (brightness) made the screen visible.



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10.6: A caution on changing brightness during install
Authored by: stauf on Aug 28, '09 07:38:35PM

If it happens to you -- the SL install is pretty hands-off -- if you've started the install from Leopard, just wait until it finishes and reboots.

(seems to also be a problem if the screen is set to auto-dim, and is dimmed when it restarts)



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10.6: A caution on changing brightness during install
Authored by: ejtttje on Aug 31, '09 09:44:08AM

This happened to me as well, but I'm pretty sure I didn't change the brightness.

I just set the installer running and took a nap. I heard it reboot before I dozed off, and when I came back later it was just finishing the installation. The backlight was off however, and the brightness keys didn't do anything—good thing it was a bright day so I could see the ghost of the installation window and progress bar and could tell it was still running!

Anyway, I just let it finish the install and reboot again and all was well. Still, an easy way for a less fortunate user to panic and try to force a reboot during the install :(



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10.6: A caution on changing brightness during install
Authored by: bugsy41 on Sep 01, '09 10:27:00AM

Same thing happened to me. I never touched the machine during the install.
I spent an hour on the phone with Apple and the tech decided it was a defective installer disk, which they are replacing.



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