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Hi all.
I'm new to the forum so please be kind if I make a mistake
I have a Mac Pro, 2012 I suspect, that is failing to boot. I've tried most of the weapons I have available but to no avail.
The story so far:
Put simply it fails to boot. I have two, original 3.5" HDD's available, both loaded with working operating systems, disk 1 is OSX 10.11.6 El-Capitan, disk 2 OSX 10.5.6 Leopard. At power up, with one or the other of the disks in place the machine starts to boot, a progress bar shows on the monitor, gets half way though and then crashes out, no error messages or feedback, just a hard reset. Left to its own devices the machine will boot loop, continuously crashing and rebooting half way through the load sequence. If I remove the drives completely and try boot to one of the numerous CD and DVD install images I have available I get exactly the same result. If I try cmd+opt+P+R I get the same result. If I try opt+D I get the same result. If put a new blank HDD in and a CD Snow Leopard and then tell the system to boot to CD then I see different behavior, I'm given the chance to install, but when I give the instruction to install I get the progress bar, half way through followed by a crash reboot. I've tried all the keyboard combinations I can find, same result, all the recovery options I can find, same result,
I'm at my wits end. I suspect either the firmware or something along the lines of the disk controller is stuffed. If nothing else the error state is consistent in its behavior.
Any suggestions you might have would be greatly appreciated.
Regards
A frustrate tech named Alan
I'm new to the forum so please be kind if I make a mistake
I have a Mac Pro, 2012 I suspect, that is failing to boot. I've tried most of the weapons I have available but to no avail.
The story so far:
Put simply it fails to boot. I have two, original 3.5" HDD's available, both loaded with working operating systems, disk 1 is OSX 10.11.6 El-Capitan, disk 2 OSX 10.5.6 Leopard. At power up, with one or the other of the disks in place the machine starts to boot, a progress bar shows on the monitor, gets half way though and then crashes out, no error messages or feedback, just a hard reset. Left to its own devices the machine will boot loop, continuously crashing and rebooting half way through the load sequence. If I remove the drives completely and try boot to one of the numerous CD and DVD install images I have available I get exactly the same result. If I try cmd+opt+P+R I get the same result. If I try opt+D I get the same result. If put a new blank HDD in and a CD Snow Leopard and then tell the system to boot to CD then I see different behavior, I'm given the chance to install, but when I give the instruction to install I get the progress bar, half way through followed by a crash reboot. I've tried all the keyboard combinations I can find, same result, all the recovery options I can find, same result,
I'm at my wits end. I suspect either the firmware or something along the lines of the disk controller is stuffed. If nothing else the error state is consistent in its behavior.
Any suggestions you might have would be greatly appreciated.
Regards
A frustrate tech named Alan