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On a Mac mini end 2009, with a drive updated to a SSD, and RAM updated to 8GB running OS X 10.11.6, I sometimes get a "🚫" on boot. It then boots in Recovery mode by itself, so i shut it down and power it up again, and it boots normally, without any problems after.

Maybe it's not the right place to ask this, I'm a StackExchange noob.

But how does this happen ?

  • @IconDaemon, what did you edit ? – Locness Sep 20 '18 at 16:47
  • Added a space after the 'prohibited' symbol in the title. I'm a proofreader in my spare time, and little formatting errors stick out like sore thumbs. – IconDaemon Sep 20 '18 at 17:05
  • Up vote for going extra step in putting symbol in the Title :) – Ruskes Sep 20 '18 at 17:13
  • It could be the PRAM telling it to where from to boot. Reset it. – Ruskes Sep 20 '18 at 17:15
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Sounds to me like you have corruption on the drive and/or the directory information. Boot up in Recovery Mode and use Disk Utility to repair the boot disk. I strongly advise you to make a complete backup before proceeding.

  1. Restart your Mac whilst holding Command (⌘)-R to boot into Recovery Mode
  2. Select Disk Utility from the options presented
  3. Select your internal system disk from the list in the left panel
  4. Choose the Repair option (or First Aid button, depending on your version)

If all goes well, any problems encountered will be fixed. If Disk Utility is unable to fix the issues you will either need to Erase the disk and reinstall the version of OS X/macOS and then use your backup to restore your applications and personal files/settings, or you could try a third-party disk/system utility. My personal favourites are DiskWarrior by Alsoft (https://www.alsoft.com) and TechTool Pro by Micromat (https://www.micromat.com).

  • Thanks! Actually, I didn't wanted a solution, since this isn't really a problem for me. – Locness Sep 20 '18 at 17:22
  • I give you up vote for trying – Ruskes Sep 20 '18 at 20:31

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