Troubleshooting UEFI Boot - JrCs/Clover-Wiki GitHub Wiki

###Troubleshooting UEFI Boot by dmazar

######When trying UEFI boot, try with following combination of drivers in /EFI/Drivers64UEFI folder:

1. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi]

if this does not work, then

2. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxLowMemFixDrv-64.efi]

and then if this does not work then

3. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxAptioFixDrv-64.efi] (with slide=0 in boot args in config.plist)

and if even this does not work, then try:

4. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxAptioFixDrv-64.efi] (with slide=0 in boot args in config.plist), [EmuVariableUefi-64.efi]

#####More about it:

1. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi]

This works on boards with Gigabyte Hybrid EFI. This is the best option for UEFI boot, in the sense that no special fixes are required. Any OSX should boot fine, unless some big change happens that will stop working boot here.

2. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxLowMemFixDrv-64.efi]

This works on Insyde H2O UEFI. Some small memory issue will be fixed by LowMemFix, and then everything should be equal to case 1.

3. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxAptioFixDrv-64.efi] (with slide=0 for ML)

This works for all other boards ... well, where works. This is not so good solution because it depends on current functioning of boot.efi and current structures that are passed between boot.efi (boot loader) and kernel, like boot args and device tree. Meaning: if structure of boot args changes, like it changed when Lion came out, which caused Chameleon to fail to boot Lion, this will again break Chameleon and UEFI boot with AptioFix - until somebody fixes it. This is the most annoying thing to me because the major point for having UEFI boot is to use boot.efi as bootloader and to avoid such things. Well, if this happens, the first solution will be to fall back to standard Clover until the thing is resolved. The small issue is that standard Clover is also dependent on kernel boot args when kernel and kext patching or kext injection is used - this would also need to be turned off in that case.

4. [HFSPlus.efi], [OsxFatBinaryDrv-64.efi], [OsxAptioFixDrv-64.efi], [EmuVariableUefi-64.efi]

This works on Dell Vostro, some ThinkPad's - some laptops with Phoenix UEFI. All mentioned in 3. is applicable here.

######All other drivers may or may not be needed. Drivers listed above are required minimum. The best way to test if the driver is needed or not is to try without it - if the thing still works, then it is not needed. Well, more or less ... since for example normal boot works without FSInject, but that one can be needed sometimes.