Will only boot to a circle with a slash

MacBook Pro will only boot to the circle with a slash symbol. I have tried all the turn on hold C, X, Option key suggestions and have tried the clearing ideas (hold cntl, commmd, p, r). Have put the system disk in to boot from that, now I cannot get the disk out.
Any suggestions out there?

Your computer is not recognizing your hard drive. Plug a mouse in and hold the mouse key down when booting. The disc should eject. Next, make sure the disc is real clean with no finger prints or scratches on it. Then try booting from it again (by holding the "C" key down) when booting. See if your Disk Utility sees the drive and run that. If it does not, or the unit will not boot from the install disc, then you have a serious problem--possibly logic board-related. You could also try running DiskWarrior and see if that will boot and repair the drive.
Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG

Similar Messages

  • My computer will only boot off it's drive in safe mode

    Short Story...
    My computer will only boot in safe mode and in normal mode displays grey apple that turns into a grey cross. Surface scan in techtool pro 4.5.1 passed
    Long Story... (all the issues I've had as they are all back to back and most likely cause by what sloved the previous one).
    When i first got my macbook i already had a 500gb hdd in my macmini running 10.6 (or 10.6.1 I forget) and as soon as a had the macbook running off this drive it would give me one error for each and every movie file that was visible (in an open folder or on the desktop) saying quick look helper had unexpectedly quit. I tried everything and for some reason ended up changing all the permissions on the computer which royally screwed it up. anyway after repairing permissions in disk utility the error messages stopped but shortly after start up it was giving me a couple of dozen error messages saying something about .kext's (if requested i can supply full text of this error message) so i tried reinstalling the OS and since in 10.6 there is no archive and install (without messing around in terminal) i just ran the snow leopard disc which brought me back to 10.6 then I upgraded to 10.6.2 and restarting a couple of times over a day or so. After a few restarts I found the computer wouldn't start (it chimed, loaded up the apple symbol and loading wheel and then after a few minutes replaced the apple symbol with a crossed circle) I tried running the snow leopard disc again and this time not upgrading but after about 3 restarts the same thing happened. now i can only start up in safe boot mode or off my backup drive which still displays a few dozen of the .kext errors at start up. Sorry about the length of this description I would appreciate absolutely any help or ideas.

    Tezz wrote:
    Short Story...
    My computer will only boot in safe mode and in normal mode displays grey apple that turns into a grey cross. Surface scan in techtool pro 4.5.1 passed
    I would try troubleshooting your problem [using the steps given by Apple here|http://support.apple.com/kb/TS1892].

  • My macbook pro will only boot in safe mode

    Hey,
    I have a macbook pro 15-inch, Early 2011 running osx 10.9.4. I have a SSD hard drive that i installed myself a year ago and hasn't shown any defects. Its a 120 gb OCZ-AGILITY3.
    My problem:
    My macbook will only boot in safe mode nowadays. I have done a complete erasion of my hard drive and installed osx mavericks twice already. After the installation the computer will safely go to the desktop. But if i then do a reboot it won't get further than after the first apple logo, sometime the turning wheel will pop up, before turning off and trying again. i have tried resetting PRAM, I have tried resetting SMC, i have tried avoiding SMC (with big fan rate), but all with no success.
    I have done a complete hardware test (the longer one) and it showed "no troubles found".
    My guess is that the problem is with the battery. My computer won't run anymore without the adapter, when i pull the adapter out it either stays on for a while before just turning off. Without having it plugged in it won't start. Is it possible that during normal start up there is some kind of communication with the battery that can cause this?
    I ran a diagnostic shown in this thread (Will only boot in safe mode) and included it in this post.
    Hope someone can help me out.
    Thanks,
    Bram
    Start time: 17:07:42 08/25/14
    Model Identifier: MacBookPro8,2
    System Version: OS X 10.9.4 (13E28)
    Kernel Version: Darwin 13.3.0
    Boot Mode: Safe
    Time since boot: 10 minutes
    Battery
      Condition: Replace Now
    Diagnostic reports
      2014-08-25 UserEventAgent crash
    Log
      Aug 26 00:41:52 Previous Shutdown Cause: -128
      Aug 25 16:23:38 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
      Aug 25 16:24:05 process rpcsvchost[94] thread 917 caught burning CPU! It used more than 50% CPU (Actual recent usage: 99%) over 180 seconds. thread lifetime cpu usage 100.014147 seconds, (82.533432 user, 17.480715 system) ledger info: balance: 90006319931 credit: 100003230498 debit: 9996910567 limit: 90000000000 (50%) period: 180000000000 time since last refill (ns): 90079246240
      Aug 25 16:25:50 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
      Aug 25 16:58:05 jnl: b(1, 3): replay_journal: from: 9340928 to: 9773056 (joffset 0x37a000)
      Aug 25 16:58:05 jnl: b(1, 3): examining extra transactions starting @ 9773056 / 0x952000
      Aug 25 16:58:05 jnl: b(1, 3): txn starting at 9773056 (9773056) @ index  80 bnum 2696544 (8192) with disk cksum != blhdr cksum (0x93b69228 0xc647562)
      Aug 25 16:58:05 jnl: 0x662b0000 0x451b0000 0x2a0001ff 0x40000000  0xd7330300 0x46001d00 0x6c006f00 0x65006400
      Aug 25 16:58:05 jnl: b(1, 3): restarting journal replay (9340928 - 9773056)!
      Aug 25 16:58:05 jnl: b(1, 3): replay_journal: from: 9340928 to: 9773056 (joffset 0x37a000)
      Aug 25 16:58:05 jnl: b(1, 3): journal replay done.
      Aug 25 16:58:06 Previous Shutdown Cause: -128
      Aug 25 16:59:26 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
      Aug 25 16:59:59 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
    Activity
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    CPU per process: WindowServer (UID 0) is using 30.5  %
    launchd
      /System/Library/LaunchAgents/com.apple.AirPortBaseStationAgent.plist
      - com.apple.AirPortBaseStationAgent
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      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
      <plist version="1.0">
      <dict>
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      <string>com.apple.AirPortBaseStationAgent</string>
      <key>EnableTransactions</key>
      <true/>
      <key>LowPriorityIO</key>
      <true/>
      <key>LimitLoadToSessionType</key>
      <string>Aqua</string>
      <key>POSIXSpawnType</key>
      <string>Background</string>
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      <key>com.apple.distnoted.matching</key>
      <dict>
      <key>com.apple.airport.agent.prefschanged</key>
      <dict>
      <key>Name</key>
      <string>com.apple.airport.agent</string>
      </dict>
      </dict>
      <key>com.apple.bonjour.events</key>
      ...and 21 more line(s)
    Spotlight: Indexing and searching disabled
    Font issues: 11
    Wi-Fi
      link auth: wpa-psk
    Restricted files: 1
    Elapsed time (s): 278

    Actually it sometimes gets a little further, the display will dim and the pointer will appear and then whoop it will turn off. if i do a verbose start up, it will finish all the steps, the white screen will appear and dim and then it will turn off.

  • 24" iMac will only boot in safe mode

    Here is the short version:
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    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
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    Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
    The commands may line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
    Launch the Terminal application in any of the following ways:
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    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
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    Triple-click the line of text below to select it. Copy the selected text to the Clipboard (command-C). Then click anywhere in the Terminal window and paste (command-V).
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    Step 2
    Repeat with this line:
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    Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.
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    Remember, these steps are all copy-and-paste — no typing. Also remember to post the output.
    You can then quit Terminal.

  • PowerMac G5 will ONLY boot up when the side panel is removed

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  • Qosmio X305 will only boot in safe mode or when the graphics card disabled

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  • My iMacG5 will only boot to white screen, gray apple and spinning gear. Help?

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    You need to do an Erase and Install or an Archive and Install depending on whether the hard drive is OK or needs to be reformatted.
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  • Brand new MBP will only boot to blue screen

    Help!
    Worked fine for about an hour or two and then completely locked up. I had to do a forced shutdown to get it to turn off.. But now it will only boot to this weird blue screen with just a cursor.
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    Actually, for a brand new machine a clean install is not a bad idea.
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  • Mac will not boot up, white screen with turning gear for hours on end

    mac will not boot up, white screen with turning gear for hours on end

    Take each of these steps that you haven't already tried. Stop when the problem is resolved.
    Step 1
    The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.   
    There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
         a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
    b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
    c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
    Step 2
    If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. The easiest way to deal with the problem is to boot from an external drive, or else to use either of the techniques in Steps 1b and 1c to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
    Step 3
    Sometimes a boot failure can be resolved by resetting the NVRAM.
    Step 4
    If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
    Step 5
    If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
    Step 6
    Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
    Step 7
    If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
    Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
    The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 6.
    If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
    If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
    Step 8
    Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
    This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
    Step 9
    Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
    Step 10
    Repeat Step 9, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
    Step 11
    This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a boot failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
    Step 12
    If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

  • How can I transfer files from a 27" iMac which will only boot in safe mode?

    My late 2009 27" imac is having issues and will only boot in safe mode. I have tried to transfer files to a new Imac using migration assistant but it wont let me. If I try booting the old Imac normally I just get a grey screen, I believe it is the video card failed and am waiting for a fix, but I would like to transfer files before the fix in case something goes wrong and I lose everything.
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    Hello Myles, likely it is a Hardware problem.
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    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
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  • Is it dead? will only boot off the OS disc or in safe mode.

    Hi there!
    Is it dead? will only boot off the OS disc or in safe mode.
    My MBP (March 09) running 10.6 Snow Leopard is playing up.
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    Invalid volume directory count (is 157609 instead of 157807)
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