CPU : Core 2 Duo T7200 2.0GHz
GPU : Geforce 9650M GT (1GB RAM) (upgraded from original ATI X2300 128MB (rebadged bottom end 1000 series card)
SATA : ICH7-M
RAM : 4GB, Dual-Channel Mode - 3GB visible.
1. The GPU has been upgraded; I used a vBIOS from an Asus M50 BIOS file, modded that, and placed it as a PCI Option ROM in the BIOS file. I've
used it for years (literally) and it works fine in windows, and all flavours of Linux (using Mint 15 / Ubuntu Raring at present).
2. The CPU has been upgraded from the old 533MHz FSB 1.6GHz Core 2; this upgrade also works fine, the Microcode is present in the BIOS, the
VT-x features work fine (weren't present on the old one). The chipset is running at 667MHz but it is designed to do that. The RAM is also rated for 667FSB and tests fine.
3. The BIOS doesn't have any SATA mode operation, and the SATA controller is stuck in IDE mode. However I have modified (upgraded) the DSDT
file and the controller now boots in AHCI mode - and I have used the DSDT file on Linux and it works fine. I am also using the DSDT file for my Mountain Lion installation attempts and the DSDT file is being loaded (it states this when beginning to boot).
Attempts to install
I have tried myHack as well as [the installer from the guy whose name begins with t who rips off other people's work without credit]. I am using a genuine
copy of ML purchased on the Mac App Store, and using my MacBook Pro to build the USB drive (it is a non-retina model but has the same specs as the top-spec Retina MBP).
All attempts fail at 'USBMSC Identifier (non-unique): XXXXXXXX 0x1sfe 0x1e23 0x110'.
I have tried with PCIRootUID=0, GraphicsEnabler=No, -v, -x, -f
I have also tried removing all the NV Kexts (for what it is worth, I was getting bluetooth errors turning up over the minute after the 'USBMSC' line appears - showing the system hadn't actually frozen - these have gone by deleting the bluetooth kexts.
I have also tried : GraphicsEnabler=No PCIRootUID=0 -x -v -f (all in one go) - no change.
I would be really grateful for any advice on how to proceed from here!
Edit : Attached photo of crash (including bluetooth errors that show up after the USBMSC line),
Can't attach my DSDT.dsl - mods - am I permitted to attach it as a Zip for review if requested? Thanks!