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Running Bless to place boot files failed

I was running High Sierra 10.3.3.

I have a mac pro early 2009, 5,1, 2-2.26 quad core. 14 Gigs ram.


I have my operating system on a partitioned 1 TB SSD.

All had been well until I couldn't start up from the SSD.

When I tried to change back to ssd to be my startup disc I get this message.


"Running Bless to place boot files failed."


Do I have to install my Os again on this drive?


Thanks.

Mac Pro, macOS High Sierra (10.13.2)

Posted on Mar 14, 2018 3:56 AM

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Running Bless to place boot files failed

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