Urgent: MacBook pro boots up in disk utility mode

today, out of the blue it boots up in disk utility mode. I restarted it several times but nothing changed. I runned disk repair and permissions repair and no change. Tried to start in safe mode but it will not.
any ideas? My last backup is a month old and I hope i don' t need to wipe the disk clean..

Reset the SMC and NVRAM:
http://support.apple.com/en-us/HT201295
http://support.apple.com/en-us/HT204063
Then I would try the safe boot again:
http://support.apple.com/en-us/HT201262
If no success, I would reinstall the OSX.
Ciao.

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I have an MacBook Pro 10.6, using disk utility I tried to verify my disk, but it came up with the message, please use your start up disk, I tried this, starting the computer up and pressing C, but it ejected the disk, the same thing happened while I runni

I have an MacBook Pro 10.6, using disk utility I tried to verify my disk, but it came up with the message, please use your start up disk, I tried this, starting the computer up and pressing C, but it ejected the disk, the same thing happened while I running the computer. Is the hard drive damaged as laptop doesn't seem to recognize the start up disk ? If so, I presume I will have to put in a new one.
There haven't been any problems with the computer, apart from a sticky curser,I have run a permissions programme from disk utility, there were a lot of different ones, but it seem to be able to fix them.
Any comments or ideas ?
Thank you in anticipation.

First backup your users files off the machine to a external storage drive (not TimeMachine!)
Most commonly used backup methods
Next to startup from the disk, have it inserted, hold c or option/alt (wired or built in keyboard) and then boot the computer and or select the disk when it appears and click the arrow.
Disk Utility is under the Utilities menu on the second screen.
Step by Step to fix your Mac
If you used the wrong 10.6 disk, it will spit it out or have issues, use the one that came with that machine or if it's defective, call Apple for a new one.

MacBook Pro just shut off, disk utility gives a strange report, please help

My MacBook Pro just turned off for no reason. I started it back up and in the Finder under devices to the left where it usually says "My Name"'s MacBook Pro, it now has a (2) beside it. I repaired permissions and got the following report:Repairing permissions for “Macintosh HD”
Reading permissions database.
Reading the permissions database can take several minutes.
Warning: SUID ﬁle "System/Library/Filesystems/AppleShare/afpLoad" has been…
Warning: SUID ﬁle "usr/bin/setregion" has been modiﬁed and will not be repaired.
Warning: SUID ﬁle "System/Library/PrivateFrameworks/Install.framework/Versi…
Warning: SUID ﬁle "System/Library/Printers/IOMs/LPRIOM.plugin/Contents/Ma…
Group differs on "private/etc/cups", should be 0, group is 26.
Permissions differ on "private/var/spool/cups/cache/rss", should be drwxr-xr…
All of the Warnings end with "and will not be repaired".
Does anyone have any idea what this might mean?
Also, when I started it back up, the hard drive made the same sound as when I insert a CD or DVD into the computer.

the DU warnings are harmless.
http://support.apple.com/kb/TS1448?viewlocale=en_US
you could have a hardware problem with your drive though.
verify the disk (not permissions) using disk utility and if it reports any errors, boot from the leopard install DVD and repair the drive using disk utility there.
you can change the name of the computer and get rid of (2) in system preferences->sharing.

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My Western Digital external hard drive suddenly stopped showing up on my macbook pro and it disappeared from disk utility. I have tried making invisible files visible but nothing has worked and my hard drive shows up on a PC but not my Mac anymore.

What is the manufacturer of the external and how old is it? Does it have its own AC power supply or is it USB bus powered?

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Erase and Install
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Quit DU after formatting completes and return to the installer. Install Snow Leopard.
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I had the same issue. The 2012 macbook pro has a different 10.7.4 build that is not yet available for public release. It won't boot no matter how much you try. You need to wait for Mountain Lion and create a start up disk from ML. Apple most likely will release a 10.7.4 update for the 2012 models, but they are focused on ML now.

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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.
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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.
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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.
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.
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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 damaged and the drive is probably malfunctioning. In that case, go to step 5.
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.)
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Step 5
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.
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Step 6
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 7
Repeat step 6, 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 backup.
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A dead logic-board battery in a Mac Pro can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
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If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

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Open your disk utility and verify your disk permissions - if errors are found - repair them and restart your macbook when it's done the repairs....
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Gus@MaggiesFarm,
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Most likely culprit is your Lacie drives which are notorious for flaky power supplies which cause just the sort of erratic behaviour that you describe. Have had similar issues myself. Lacie has been good about replacing my power converter-- twice. If you have seven of them, good luck finding the bad one or more. Like I said, the behaviour is erratic. Sometimes it'll work sometimes not. I can't comment on Samsung drives because I've never used them and have never heard anything about them. Same with Softraid. Why not just use Disk Utility. Sounds like you're ready for an external hardware raid. This will be much faster, much more reliable, and may even be cheaper than seven firewire drives. Check out G Tech, and Maxx Digital for starters.
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Clean the heads.
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Hi Japib
Thanks for your reply. Here is my report:
Problem description:
macbook pro is really slow after sleep mode
EtreCheck version: 2.1.8 (121)
Report generated 4 februari 2015 20:56:34 CET
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Pro (13-inch, Mid 2012) (Technical Specifications)
    MacBook Pro - model: MacBookPro9,2
    1 2.5 GHz Intel Core i5 CPU: 2-core
    8 GB RAM Upgradeable
        BANK 0/DIMM0
            4 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            4 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 172
Video Information: ℹ️
    Intel HD Graphics 4000
        Color LCD 1280 x 800
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 1:36:41
Disk Information: ℹ️
    APPLE HDD TOSHIBA MK5065GSXF disk0 : (500,11 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 498.88 GB (292.17 GB free)
            Encrypted AES-XTS Unlocked
            Core Storage: disk0s2 499.25 GB Online
    MATSHITADVD-R   UJ-8A8
USB Information: ℹ️
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Computer, Inc. IR Receiver
    Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /Library/Application Support/Hotspot Shield
    [not loaded]    com.anchorfree.tun (1.0.1) [Click for support]
        /Library/Application Support/Kaspersky Lab/KAV/Bases/Cache
    [loaded]    com.kaspersky.kext.kimul.44 (44) [Click for support]
    [loaded]    com.kaspersky.kext.mark.1.0.5 (1.0.5) [Click for support]
        /Library/Extensions
    [loaded]    com.kaspersky.kext.klif (3.0.4a41) [Click for support]
    [loaded]    com.kaspersky.nke (1.6.4a15) [Click for support]
        /System/Library/Extensions
    [loaded]    com.hzsystems.terminus.driver (4) [Click for support]
    [not loaded]    com.olympus.CamBlockCommandsDeviceUP (3.1.0 - SDK 10.6) [Click for support]
    [not loaded]    com.roxio.BluRaySupport (1.1.6) [Click for support]
    [not loaded]    com.sony.driver.prs2 (1.0.3d1) [Click for support]
    [not loaded]    com.wacom.kext.pentablet (5.3.3 - SDK 10.8) [Click for support]
        /Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS
    [not loaded]    com.roxio.TDIXController (2.0) [Click for support]
Launch Agents: ℹ️
    [running]    com.epson.Epson_Low_Ink_Reminder.launcher.plist [Click for support]
    [failed]    com.epson.esua.launcher.plist [Click for support] [Click for details]
    [running]    com.epson.eventmanager.agent.plist [Click for support]
    [running]    com.kaspersky.kav.gui.plist [Click for support]
    [not loaded]    com.sony.ReaderDesktop.RunReaderDesktop.plist [Click for support]
    [not loaded]    com.trusteer.rapport.rapportd.plist [Click for support]
    [running]    com.wacom.pentablet.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.anchorfree.ajaxserver.plist [Click for support]
    [running]    com.kaspersky.kav.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
    [loaded]    com.oracle.java.JavaUpdateHelper.plist [Click for support]
    [running]    com.trusteer.rooks.rooksd.plist [Click for support]
    [loaded]    com.tunnelbear.mac.tbeard.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [loaded]    com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist [Click for support]
    [running]    com.spotify.webhelper.plist [Click for support]
    [loaded]    com.valvesoftware.steamclean.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Programma (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Documenten    Map (/Users/[redacted]/Documents)
    uTorrent    UNKNOWN (missing value)
    BambooCore    UNKNOWN (missing value)
    BambooCore    UNKNOWN (missing value)
    BambooCore    UNKNOWN (missing value)
    BambooCore    UNKNOWN (missing value)
    BambooCore    UNKNOWN (missing value)
Internet Plug-ins: ℹ️
    JavaAppletPlugin: Version: Java 7 Update 60 Check version
    WacomNetscape: Version: 2.1.0-1 - SDK 10.8 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.2 [Click for support]
    AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.296 - SDK 10.6 [Click for support]
    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
    Flash Player: Version: 16.0.0.296 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    SharePointBrowserPlugin: Version: 14.4.7 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
    MeetingJoinPlugin: Version: Unknown - SDK 10.6 [Click for support]
User internet Plug-ins: ℹ️
    Google Earth Web Plug-in: Version: 7.1 [Click for support]
Safari Extensions: ℹ️
    AdBlock
    DuckDuckGo
    Save to Pocket
    Awesome Screenshot
    URL Advisor
    Virtual Keyboard
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Squeezebox [Click for support]
    Trusteer Endpoint Protection [Click for support]
Time Machine: ℹ️
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 498.88 GB Disk used: 206.70 GB
    Destinations:
        My Passport [Local]
        Total size: 999.83 GB
        Total number of backups: 17
        Oldest backup: 2013-11-06 17:55:38 +0000
        Last backup: 2014-10-14 11:30:39 +0000
        Size of backup disk: Adequate
            Backup size 999.83 GB > (Disk used 206.70 GB X 3)
Top Processes by CPU: ℹ️
        15%    mds
         5%    WindowServer
         0%    ocspd
         0%    fontd
         0%    kav
Top Processes by Memory: ℹ️
    223 MB    kav
    198 MB    Safari
    155 MB    Mail
    137 MB    mds_stores
    77 MB    WindowServer
Virtual Memory Information: ℹ️
    3.45 GB    Free RAM
    3.05 GB    Active RAM
    1.11 GB    Inactive RAM
    974 MB    Wired RAM
    1.64 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Feb 4, 2015, 07:21:16 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/EPSON Software Updater Agent_2015-02-04-192116_[redacted].crash
    Feb 4, 2015, 07:18:08 PM    Self test - passed
Hope this will shed some light on the problem.

Urgent: MacBook pro boots up in disk utility mode

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