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dazzz1er posted a topic in OSx86 10.9 (Mavericks)Hey guys, hows it going?? I'm new to creating topics, but I've read a few and often solved my previous hackintosh problems this way so thanks for that, and in advance for hopefully solving this issue! I just bought a new SSD (Samsung 840 EVO 120GB), and decided to use it as a Mavericks drive for development/design, as it just so happened to coincide beautifully with the release of Mavericks! Previously I have had a stable boot with Mountain Lion (up to 10.8.2/10.8.3) I believe... and I can still run this on a different hard-drive, so the only component that is different is the SSD, sleep has never worked properly but I believe this is due to having NullCPUManagement installed when it wasn't needed. I followed a commonly found Mavericks install process (documented on a website not supported by this site), and I have working sound, graphics and everything else I believe (but for iMessage so far).. however I can currently only boot off the bootable USB and not the SSD itself. I have tried using a DSDT, and a DSDT-free installation and installing NullCPUManagement when it shouldn't be required. I have the CMOS reset fix kext installed, and fakeSMC, and have tried GraphicsEnabled=No and Yes, and also PCIRoot, and -f -v -F bootflags. However, even with verbose boot mode I get no kernal panic as such - my computer just reboots almost instantly should I try boot from SSD to Mavericks HOWEVER my computer will boot to my other OS X install (Mountain Lion), installed on a hard-drive, when booting from the SSD (so bootloader - Chimera 2.2 I believe it is - works for Mountain Lion, or to boot to another hard-drive atleast, but will not boot to Mavericks installed on the SSD). There appears to be some error messages saying error:unable to handle, but my ML install had a few of these (different ones I believe) and worked. I used the pause|break button to freeze and caught these errors with verbose boot: - Unable to handle key MLB - Unable to handle key ROM - Unable to handle key SystemAudioVolume - Unable to handle key boot-gamma (please see attached image for the screenshot) comp specs: Gigabyte Z77-D3H, Intel i5 3570k 8GB Corsair Vengeance 1600MHZ MSI 670 GTX OC 2GB Samsung 840 EVO kexts I have: fakeSMC, CMOS reset fix, Atheros for ethernet profile/spec I am using: Mac Pro 3,1 (apparently this is the recommended one to use for Mavericks) Can anyone offer any advice, anything I can try? I personally think it is an SSD related problem, and I will try installing Chameleon/maybe switching from SATA III ports to SATA II ports to see if this is the problem. As it stands I have left the install of Mavericks pretty much as it was so I don't mind wiping the drive, re-installing or anything like that. Thanks a lot for any help Dan