Yuffie Posted September 4, 2009 Share Posted September 4, 2009 Hello I am currently putting together my first OSX86 system, (Used to own a G3 iBook and G4 QuickSilver back in the day). Before I get into the problem heres my specs. ASUS m3a78-em Athlon 64 x2 5000 90mm 1gb 533 x2 320 gb Sata hard drive Sata DVD-r\rw I am using iDeneb v1.5 Currently I am running onboard video but thats not even related to my issue. I have my Bios set to AHCI, ACPI enabled. the HDD is on Sata 1 and the DVD-R on Sata 2. I have a MBR set with 2 partitions. 1 is Primary and is my 100 gb XP partition, the 2nd partition 200gb Type AF, set to primary and Active during boot. When watching the boot on -v, It tells me that AppleAHCIDiskDriver is unable to allocate, Failed to load extensions, fails to write kernel onto the disk, and reports that the root file system is read only. When I get into installer, Disk utility reports no HDD, when I check system profiler it says that there are no Sata devices, weird! I decided to change my bios settings and change AHCI to SATA. I didn't get any problems during boot other than it reporting that the root file system is read only. On installer in SATA mode, I can see my SATA devices, and for a moment it showed my HDD on Disk Utility (failed to format and then dissapeared). I am totally stumped, I have tried loading every kernel on boot, every -v -f -x and etc that i found on forums and I just cannot get this thing to properly read my HDD. any help would be appreciated Link to comment https://www.insanelymac.com/forum/topic/184141-asus-m3a78-em-appleahcidiskdriver-unable-to-allocate-with-ideneb/ Share on other sites More sharing options...
Yuffie Posted September 5, 2009 Author Share Posted September 5, 2009 bump please help Link to comment https://www.insanelymac.com/forum/topic/184141-asus-m3a78-em-appleahcidiskdriver-unable-to-allocate-with-ideneb/#findComment-1252198 Share on other sites More sharing options...
Yuffie Posted September 5, 2009 Author Share Posted September 5, 2009 Ok Well I figured it out, This is for the people that in the future have a problem with this since theres very little help on the internet. The problem arises when you try and boot on AHCI from Sata on a SB700 chipset. it does not recognize the HD, you need special kext files on the dvd install from boot up. What I did was buy a 80 gb IDE PATA drive and it installed just fine. everything worked right out of the box. Link to comment https://www.insanelymac.com/forum/topic/184141-asus-m3a78-em-appleahcidiskdriver-unable-to-allocate-with-ideneb/#findComment-1252749 Share on other sites More sharing options...
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