Announcement: Upgrade to macOS Mojave

With features like Dark Mode, Stacks, and four new built-in apps, macOS Mojave helps you get more out of every click. 
Find out how to upgrade to macOS Mojave >

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.


Question: 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?


Mac Pro, macOS High Sierra (10.13.2)

Posted on


Page content loaded

User profile for user: Russell Keefe

Question: Running Bless to place boot files failed