Still having trouble and can't get El Capitan to show up in System Preferences/startup disk. I installed El Cap from a Macbook Pro on to a HDD in the Mac Pro 1,1 using target disk mode via a firewire cable. After installation, the MBP successfully booted from El Cap. I completed the account set up, and then used the latest boot_grey.efi, and placed it in the three required places (changing name to boot.efi) in all three locations (Core Services, 1386, and Recovery). I ejected the El Cap drive from the MBP, powered off the Mac Pro from target mode, and rebooted the Mac Pro. It booted to my prior OS (10.6.8). I went to System Preferences and attempted to select El Cap as the startup disk, but El Cap was not even there as an option. I restarted, reset the PRAM, and held down the Option key after the second set of chimes and got the "El Cap" drive to show up, along with the Recovery Drive, and the HDD for my original OS (10.6.8). I clicked on the ElCap HDD image, the cursor froze over the El Cap HDD icon, and then 30 seconds later the Mac Pro boots into OS 10.6.8 again without any action on my part. This is my third attempt and I'm successful at replacing the boot.efi files, but can't get the Mac Pro to boot, or even see El Cap as an option in the Startup Disk. Very frustrating after reading how easy it has been for everyone else.
1) Am I missing something or doing something wrong?
2) I have read other posts about fixing permissions. Is this necessary with the most recent bootloader?
3) I have read others talking about the need to bless a folder. Is this a necessary step? If so, what bless command should I use in Terminal?
4) I have read that others used the Hennesie2000 guide, but it seems like that applied only to the previous versions. Are all those steps necessary?
5) Since I"m trying to upgrade from 10.6.8 to El Cap is that too big of a leap. Would it have been easier had I already done the bootloader trick with Mavericks or Yosemite?
6) Should I try from a bootable USB drive instead?
Would greatly appreciate any help, as I would love to resurrect my Mac Pro.
Thanks and Cheers,
Jeff
Below is the response I get after entering "bless --info" in Terminal:
Last login: Tue Nov 17 22:43:02 on console
Mias-MacBook-Pro:~ mamamia$ bless --info
finderinfo[0]: 58 => Blessed System Folder is /System/Library/CoreServices
finderinfo[1]: 653468 => Blessed System File is /System/Library/CoreServices/boot.efi
finderinfo[2]: 0 => Open-folder linked list empty
finderinfo[3]: 0 => No alternate OS blessed file/folder
finderinfo[4]: 0 => Unused field unset
finderinfo[5]: 58 => OS X blessed folder is /System/Library/CoreServices
64-bit VSDB volume id: 0xE50B4EB0B9580C0D
Mias-MacBook-Pro:~ mamamia$