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boot error

  1. RedFlag

    Prohibitory sign after Sierra update, unmountable partition

    Hello. Yesterday I decided to update to Sierra from El Capitan on both the disks on my Macbook Pro (mid 2012); the update on my SSD went without a hitch so I decided I'd update my other disk, too. I downloaded the .app and the installation started as normal; once it got to the point where I'd...
    • RedFlag
    • Thread
    • boot error boot fail partition partitioning prohibitory sign sierra update problems
    • Replies: 14
    • Forum: macOS Sierra (10.12)
  2. H

    Black Screen of Death

    Hello! I recently bootcamped my mac with windows 10. (about a month or two ago). One day my son knocked my mac off of my counter and it fell. When I turned on the comp. it looked like the screen was cracked. I was able to still see (kinda) and I was able to reset the display driver (at least I...
    • hstan1821
    • Thread
    • black screen boot error boot fail bootcamp bootcamp and windows 10
    • Replies: 0
    • Forum: MacBook Pro
  3. R

    Mac Pro 5,1 won't boot - stuck on spinner - need help

    Hello folks, A bit of a long-winded explanation here as background to my troubles of today. Old 2007 Mac Pro (8 core) running OS X 10.7.5 (Lion, I believe) died. Thought it was a hard drive issue at first so I replaced that Seagate drive with new 3TB HGST model and Carbon Copy Cloned the...
    • RayZorFIst
    • Thread
    • boot disk boot error boot fail
    • Replies: 3
    • Forum: Mac Pro
  4. H

    MBP late '11 (15"), Lion upgrade to Sierra, boot issue

    Hi All, My MBP late 2011 (15") had only been upgraded to OS X Lion (10.7.5 I believe) and I've just attempted to boot from a Sierra install disk. When the install happened it took a while but all went smoothly in the end. However, after the install I'm struggling to get past the bootup...
  5. Micho_33

    Resolved Is my MBP logic board fried? [video]

    Hi, I'm having serious troubles to figure out what's wrong with a mid-2012 13" MBP. Already ran the onboard diagnostics utility (boot with command D) and came up with no hardware errors. Basically upon booting the laptop, it shuts down a bit short after the progress bar with the apple logo...
  6. S

    SSD not booting but working as external

    I switched to an SSD about a year ago and been running seemlessly and fast ever since. I cannot boot anymore and get the flashing folder/question mark logo. I managed to boot into single user mode and repair the disk but the problem came back a day later and now I cannot even enter single...
  7. B

    Macbook Pro wont load past the apple sign

    Gday got a macbook pro 13" 2009 model, when turning it on it loads as normal, except the load bar is really slow and when it gets to the end it flashes up with a file with a question mark. The hard drive in there is fine, i have tried other hard drives also, and when i put the hard drive in a...
    • bamctaggart
    • Thread
    • boot error hard drive loading macbook 13" mbp13
    • Replies: 8
    • Forum: MacBook Pro
  8. cbellyoung

    Lots of white text on frozen load screen!

    I restarted my MBP 15" early 2013 (running OSX 10.11.4) and the loading screen froze and displayed a long series of white text across the left side of the screen. I forced a shut down (by pressing and holding power button), waited a few mins and then turned it back on. It loaded fine, but I'm...
  9. L

    iMac 2008 not booting

    Hello, My grandad gave me his old 2007 iMac last year, i have been using it since and it works just fine, the only problem is that it can't play back 60fps (stutters ALOT), this is due to the underpowered graphics card (specs below). My friend has an 2008 iMac which he doesn't use anymore and it...
    • lucas2205
    • Thread
    • 2008 apple boot boot error boot problem boot stuck imac imac 2007 imac 2008 not turning on
    • Replies: 5
    • Forum: iMac
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