• Reports on HGST 6TB NAS HD won't mount after restart in Mac Pro 2009-12 (Mac Pro 4,1 and 5,1). A few months ago I also had someone say they installed a 6TB Hitachi NAS edition (for internal TM volume) in their Mac Pro and it would mount at initial power up, but not after a reboot. I wondered if adding some delay (restart w/option key, then select startup disk) helped. (The apple forum thread also has comments on this problem from other 6TB NAS Edition owners.)
  Question: If you have this problem, are you booting from an SSD?
  (SSDs boot much faster, and some HDDs may not be ready fast enough on a reboot.)
  
  Update - an SSD boot drive was not a factor per later test/reports (here and here). Note the comment from a 2008 Mac Pro (3,1) user saying that Mac Pro isn't affected, but the 2009-2012 models are. And a note in the later report said Bootcamp Windows 7/Windows 10 installs on his Mac Pro didn't have the problem. Curious if OS X 10.11 El Capitan does.
  
  
• Not common but 2 Mini owners had boot problems after running EFI Update 1.8. One said the Mini won't power up - only the LED blinks. (There were firmware restoration CDs in the past (for update failures, not backflashing) but for later models there's Recovery mode.) If the mini doesn't even attempt to boot (can't try recovery), contact apple support.
    Also saw some posts that the update didn't work - bootrom still .B08 after restart. You should see a progress bar fill in as part of the bootrom flash process on restart. (If not, verify drive format is GUID partition scheme. Disconnect any unnecessary external devices.)
  
  
• I don't use Yosemite but had a reader (2012 MBP) ask if anyone else had word wrap problems with System Info in OS X 10.10.4. (Didn't see any posts on that but not sure anyone else checked for it.)
  Update: 2 readers replied they've also seen the problem in 10.10.4:

  "I noticed that problem too. It seems to have started in 10.10.4. It seemed to happen in some of the device and software report windows and not others. Can't reproduce it now however. My guess is that Apple probably knows about this bug.... but I don't know that for a fact.
  -Timbo"

  "Yes I have had it through Yosemite 10.11.4. I have to expand the left hand column then move it past the left of the screen and then move the right hand column to the farthest right. Move the window back to the right just so the left column is seen and everything is normal. Word wrap problem he's not alone. At first I just though it was the little screen but to a 27 inch screen it acts the same way.
  -Lou C.
  PS I am using Cindori's Disk Sensei (upgrade from TRIM Enabler) since .4 came out. I had to keep a sheet of paper with terminal commands in case I forgot about kext signing. So far it's working fine. I moved the users directory to the mechanical drive where the CD/DVD was located and have the CD/DVD outside with a USB adaptor incase I need it."

  Thanks guys.

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(Topic-based page of Tips, Troubleshooting & How-To articles for Mac/OS X/iOS Users.)