Mac Booting with Prohibitory sign

Klaymator14 · Nov 15, 2009, 10:39 PM

Hello all, after about a week of using Snow Leopard, whenever I restart my mac, it starts up with a prohibitory sign, or a circle and a line through it. So then I have to reinstall Snow Leopard, and whenever I restart it after that, it always does it. But it won't do it if I restart it after a software update, specifically OS updates. This didn't fix it when 10.6.2 came out, and it's very frustrating. Anyone know what's wrong?
Thanks!

-Blayke

Sun Baked · Nov 15, 2009, 10:48 PM

Utility/Disk Utility/Repair Permissions

and for good measure verify the drive while there.

and then try

System Preferences/Startup Disk ... reselect the startup Disk

The zap PRAM on restart (Press and hold the Command-Option-P-R keys on restart, let it bong three times and release).

---

Permissions sometimes get out of whack after a system update, install ... if the startup disk isn't registering properly, it can cause a few issues on restart ... zapping PRAM makes sure all startup items in PRAM are reset.

Klaymator14 · Nov 17, 2009, 09:20 AM

Nope... it still does it. Any other ideas?

otter870 · Nov 25, 2009, 08:35 PM

I am having the same problem and have done all these fixes and even a complete erase and reinstall and it is still doing it.... i would love to know what is causing this... could it be hardware related?

Nov 15, 2009, 10:39 PM	#1
Klaymator14 macrumors newbie Join Date: Jul 2009	Mac Booting with Prohibitory sign Hello all, after about a week of using Snow Leopard, whenever I restart my mac, it starts up with a prohibitory sign, or a circle and a line through it. So then I have to reinstall Snow Leopard, and whenever I restart it after that, it always does it. But it won't do it if I restart it after a software update, specifically OS updates. This didn't fix it when 10.6.2 came out, and it's very frustrating. Anyone know what's wrong? Thanks! -Blayke

Nov 15, 2009, 10:48 PM	#2
Sun Baked macrumors 603 Join Date: May 2002	Utility/Disk Utility/Repair Permissions and for good measure verify the drive while there. and then try System Preferences/Startup Disk ... reselect the startup Disk The zap PRAM on restart (Press and hold the Command-Option-P-R keys on restart, let it bong three times and release). --- Permissions sometimes get out of whack after a system update, install ... if the startup disk isn't registering properly, it can cause a few issues on restart ... zapping PRAM makes sure all startup items in PRAM are reset. __________________ May you be plagued by images of Richard Simmons flouncing through you brain, and squat thrusting his way though all waking thoughts.

Nov 25, 2009, 08:35 PM	#4
otter870 macrumors newbie Join Date: Mar 2009 Location: Ohio	same problem here I am having the same problem and have done all these fixes and even a complete erase and reinstall and it is still doing it.... i would love to know what is causing this... could it be hardware related? __________________ Scott 24" iMac; 13" Macbook; 8 GB iPod Touch; iPod Shuffle; 500 GB Time Capsule

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Nov 17, 2009, 09:20 AM	#3
Klaymator14 Thread Starter macrumors newbie Join Date: Jul 2009	Nope... it still does it. Any other ideas?