Dear Slice, I have another real Apple Mac testcase in BIOS-mode: MacPro 2.1 octo 16GB ati 5770 2x monitor dp>dvi-i + dvi-d
Clover iso 928/9 CD only boots to a text menu if no internal/external usb/sata disks are connected to the MacPro.
Clover iso 928/9 CD can boot a external USB disk if the disk is powered on AFTER Clover had started from CD and persists inside its "Boot Maintenance Manager" sub-menu, in which you can select "boot from file". So the external usb-disk is powered on after Clover booted from CD.
Clover iso 928/9 CD can chainload/boot a clover 928/9 on a external USB MountainLion installer disk with a visual GUI with 1600x1200! :-D
Clover 923 chainloaded shows only 4 cores in the cpu-menu, booting the MountainLion installer with a patched MacPro dsdt makes it hang after the "cryptosupport.kext .... passed". (Chimera boots fine with this dsdt, but ofcourse not from external usb, on chimera shutdown/restart won't work)
Clover iso 928/9 CD can chainload/boot a Windows 7 prof 64 EFI installer from external fat32 USB disk from the clover text sub-menu "boot from file"! :-D
Clover ISO 928/9 64 bit will only boot till a ncurses like menu when all internal and external(usb) disks are disconnected from the MacPro! After ending up in the textmenu (not the normal highress/color GUI with a mouse), the keyboard works and you must select the lowest menu item "Boot Maintenance Manager". When you are in that sub-menu, POWERON a USB disk which contains a MountainLion installer and a Clover 923 install, wait a couple of seconds. Than select "boot from file" and go to volume of MountainLion into the folder /EFI/BOOT/bootx64.efi on that external USB disk and boot it. Than the visual highress/color Clover menu shows up, showing version 923!!! Or select a external USB fat32 volume with a Windows 7prof 64 installer and boot the /efi/boot/bootx64.efi and you have a working Windows 7 installation.
Clover 923 will not chainload from 928/9 if usbmouse driver is loaded! So only FSinject.efi may exist in the 64bit efi driver folder of the usb disk.
So referring back to the earlier made real MacBookPro 5.1 testcase http://www.insanelym...00#entry1873065
which boots clover 883 with a visual highress GUI instantly from the Clover CD ISO, but usb support is totally dead so you cannot interact with it(logo keeps spinning).
On the other side on this real MacPro2.1 the usb support partly works for keyboard input and external usb disk support(powered on after clover has loaded its SUB-menu from which you can select "boot from file"), but the bootloader will not even start if any disk is connected. It will show only the black screen with a highress white cursor/dash on the topleft corner shows and seems to hang although "CTRL-ALT-DELETE" can still reboot the machine so it doesn't really hang.
I'll try a clean Fat32 Clover install to enable logging on these real macs this weekend.
ps: also a MacBookPro3.1 will be tested.