Currently Being ModeratedRe: I get a 'prohibited symbol' when I try to startup my iMac, can't access computer. How to proceed?Oct 8, 2013 11:02 AM (in response to Barncore)
Also when you do a safe boot it takes considerably longer than normal power up hold left shift and continue to hold till you see the progress bar.
If you boot holding the option key does your drive show up and can you select it? Or the install disk if it is in? If the install disk shows up when booting holding option try clicking past the language screen, then select utilities in the menu bar, disk utilities, select your volume in the left side bar and click repair disk. Also do all of this with a wired keyboard.
Currently Being ModeratedRe: I get a 'prohibited symbol' when I try to startup my iMac, can't access computer. How to proceed?Oct 8, 2013 1:51 PM (in response to Barncore)
Technical Note TN2063: Understanding and Debugging Kernel Panics,
Mac OS X Kernel Panic FAQ,
Resolving Kernel Panics,
How to troubleshoot a kernel panic, and
Tutorial: Avoiding and eliminating Kernel panics for more details27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.5), G4 450 MP w/Leopard, 9.2.2
Currently Being ModeratedRe: I get a 'prohibited symbol' when I try to startup my iMac, can't access computer. How to proceed?Oct 8, 2013 8:42 PM (in response to sanjampet)
@sanjampet: I have already read the link you provided and none of the solutions work, which is why I posted here.
Safe mode just doesn't activate. I hold shift for as long as possible until eventually I get the prohibited symbol. When I hold shift I see the apple logo and loading icon and then eventually prohibited symbol, its as if I wasn't holding shift at all, which makes me wonder if the shortcut is even correct? And I know its not a problem with my keyboard or my timing of pushing shift because holding alt/option works as usual.
Holding C to load from the installs disc doesn't work either, which eliminates all the solutions based on that. Its the same as safe mode - I hold the button until I eventually get prohibited symbol.
I also tried selecting my Mac hd via holding alt key - same result: prohibited symbol.
I also tried selecting my installs disc via holding alt key and a strange thing happens: I see the apple logo and loading wheel but this time it is stuck on the apple logo and loading spin thing for about 20 minutes while there is lots of noise and activity coming from the CD drive..
I also tried resetting the NVRAM/PRAM, which DID seem to have an affect (screen was brighter + startup sound was louder) but I still see the prohibited symbol like all the other times.
I'm yet to be able to get past the prohibited symbol, the only way around it so far is to load the windows partition if my HD.
Currently Being Moderated
Then, I suggest a visit to an Apple repair station.27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.5), G4 450 MP w/Leopard, 9.2.2