Posted 26 July 2012 - 10:46 AM
New big cat – old problems. I just tried to install ML on my Asus x58 P6T-Deluxe MB and loading from usb hangs before actual installer screen.
I've tried PCIRootUID with no luck. Also I use "-v" and what I saw is quite similar to old 10.7.4 + x58 problem – hanging on the IOAPIC: Version 0x20 Vectors.
With 10.7.4 the solution to this problem is AppleACPIPlatform Rollback but I don't know how to apply it to ML install.
Asus x58 P6T-Deluxe MB
Core i7 - 920
GeForce GTX 260
I used ###### to create a USB-stick to install with.
Posted 26 July 2012 - 01:04 PM
Posted 26 July 2012 - 04:41 PM
Posted 26 July 2012 - 05:39 PM
I try to describe my situation in other words.
I have Lion (10.7.4) installed and everything works well. I want to install Mountain Lion (10.8) and to do so I've downloaded a installation usb-stick creation utility (this utility name banned on this forum I don't know why).
With help of this utility I made a installation usb-stick. (btw I install Lion same way and everything works great).
When I boot from this USB flash drive to install OS X 10.8 I see:
black screen - apple with spinnig circle - monitor goes in sleep mode.
If I boot from this USB flash drive verbose mode it hangs at
IOAPIC: Version 0x20 Vectors. and after 30-40 seconds some lines of the text
flashing very quickly and then monitor goes in sleep mode.
For me it looks quite similar to old 10.7.4 problem but I'm most likely wrong.
I've recorded a short video that shows this problem:
Sorry for music I don't know how to remove audio in youtube editor.
Posted 26 July 2012 - 05:45 PM
Hope this will help you.
Posted 26 July 2012 - 07:08 PM
IOAPIC: Version 0x20 Vectors. is annoying, but is not stopping you from booting and installing. For now don't even worry about it and you can fix it with the kext I linked on your final installation. You have a graphics card problem right now. System is booted but you can't see it. Since tot318 has the same Graphics Card as you and I don't, that's your best bet
Posted 26 July 2012 - 11:35 PM
But after installation system does not boot nor from hdd or usb. I get the apple logo and spinnig circle. I'm not at home now and I can't provide a photo of verbose boot yet.
Maybe you can say what I did wrong.
1. I've followed all steps provided in given guide.
2. For model I've selected mac pro 5.1 (as I did in my 10.7.4)
Posted 27 July 2012 - 07:13 PM
Posted 29 July 2012 - 06:00 PM
Posted 29 July 2012 - 06:36 PM
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