How do I repair a disk?

I ran disk Utility and did a 'Verify Disk'...got a message that says I need to start up using a different disk. I've never done this before so I thought I'd ask before I create more of a mess. Is the disk I need to use the grey disk that came with my MacBook Pro? Also, I've upgraded to 10.6.8 but the original system disk is 10.6.3. Will that make a difference? Thanks for your help.

Repair the Hard Drive and Permissions
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. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Booting From An OS X Installer Disc
  1. Insert OS X Installer Disc into the optical drive.
  2. Restart the computer.
  3. Immediately after the chime press and hold down the "C" key.
  4. Release the key when the spinning gear below the dark gray Apple
      logo appears.
  5. Wait for installer to finish loading.

Similar Messages

  • How do I repair a disk that's OK?

    I'm trying to do a remote install, and it fails, telling me that the Macintosh HD needs to be repaired. But when I verify the HD, Disk Utility tells me that the disk is OK. How do I repair a disk that's OK?
    Here's the context. I want to install Lion on a MacBook Pro (“MBP”) that’s currently running Leopard. Apple says to install Snow Leopard and then get Lion from the App Store. So I bought a Snow Leopard install disk and thereby discovered that my MBP’s SuperDrive is no longer working. Had I known, I could instead have bought Lion on a flash drive, but I’ve already paid for the install disk. I’ve also got an eMac running Leopard, but I don’t have a FireWire 6-pin to 6-pin cable, so can’t use target disk mode. So I’m trying a remote install.
    To remote install, I put the DVD into the eMac and turn on DVD Sharing. Back on the MBP, I use Terminal to enable ODS:
    $ defaults write com.apple.NetworkBrowser EnableODiskBrowsing -bool true
    $ defaults write com.apple.NetworkBrowser ODSSupported -bool true
    and reboot, and now I get a Remote Disc in the MBP’s Finder Sidebar Devices. I select the Remote Disc and the eMac shows up in the Finder window. I double click the eMac icon, and the remote Mac OS X Install DVD opens in the Finder window. I double click the installer and it starts running, so I’ve succeeded in starting a remote install. The problem is that the installer quickly fails with this message:
    The disk “Macintosh HD” needs to be repaired.
    Go to the computer with the Mac OS X Install DVD, open Remote Install Mac OS X (located in the Utilities folder in the Applications folder) and follow the onscreen instructions for restarting your computer using the DVD.
    When the Mac OS X Installer opens, follow the onscreen instructions to install Mac OS X. During installation, the Installer repairs the disk automatically.
    I think what it’s suggesting is that I boot my MBP from the remote disk. (Right?) I think that won’t work for me because I’ve got a MacBook Pro rather than a MacBook Air or Mac Mini, which are the only types that can boot from a remote disk. (Right?) Instead I thought I’d do whatever repair is necessary to the MBP’s Macintosh HD and then try the remote install again. So I ran Disk Utility on the MBP to verify the Macintosh HD, but it succeeds with “The volume Macintosh HD appears to be OK.”
    I can’t remote install until the disk is repaired. But how can I repair a non-existent problem?

    Repair the Hard Drive and Permissions
    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. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and the installer.
    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
    Booting From An OS X Installer Disc
      1. Insert OS X Installer Disc into the optical drive.
      2. Restart the computer.
      3. Immediately after the chime press and hold down the "C" key.
      4. Release the key when the spinning gear below the dark gray Apple
          logo appears.
      5. Wait for installer to finish loading.

  • Disk Utilities can not repair my disk - invalid node structure. How can I repair my disk? I have restarted with the CD.

    Hi,
    How can I repair my hard disk. Computer Starts up and then shuts down.
    I've started up with the CD and disk utilities can not fix the disk, invalid node error.
    How can I fix my disk?
    I need to get to the file on the hard disk.
    Thanks
    Peter

    With Disk Warrior can I start with a CD/DVD and get at the files on the hard disk?
    With apple disk utilites I can not see my files that are on the hard disk.
    If I could get at my files I could back them up and reformat my hard disk.

  • How do i repair my disk if disk utility is giving me a sandbox_cashe.db error?

    I installed a new hard drive in my mid 2010 macbook pro with Mavericks and about 24 hours after all my files had been transferred over i encountered the spinning beachball of death, after 10 minutes of spinning i powered down and then when i rebooted i got the apple screen with the spinning gear and then a shut down. When i try to use disk repair it tells me the block count for sandbox_cashe.db is 20 instead of 10, i can boot up in s-mode but that's about it. i get the same errors from disk util in s mode as with the USB boot.
    this all happened after i modified all the files i just uploaded and uploaded new ones from my camera so i'd rather not reformat if i can help it.
    anybody have any suggestions? i cant seem to find a thread that helps. I have an external drive enclosure coming tomorrow to see if i can mount the drive and get my files that way.
    I also tried to erase the disk and repartition it but disk util told me it couldnt do either. I think i will have to send the disk back after i get my files off.

    Hello Jasper,
    So you have tried restoring your iPod and that's when you get the 1415 error?
    B-rock

  • How to run repair in disk utility without a start up cd

    Hello,
    I have a macbook pro 2.3 GHz i5.  I have run disk utility and it says that my disk needs to be repaired.  It says I should insert the start up CD and then run repair but my mac book did not come with a disk. I ran disk utility because there are 247GB of miscellaneous files on my computer.
    Any help gratefully received. 

    Lion has the 'install disk' built in.
    You access it by restarting your mac and holding down the 'command' and 'r' keys. When the disk icons appear, choose the 'Recovery HD' icon. In the menu up the top, you can choose Utilities > Disk Utility.

  • How can I repair the Volume?

    My IMac G5,(late model '04) was not working as expected. I verified the permissions, and a few were repaired. The problem continued, then I verified the disk(Tiger).
    The process returned a message box with the following text: "First Aid Failed. Disk utility stopped because the following error was encountered: The underlying task reported failure on exit".
    There are 2 message indicating the "Volume bit map needs minor repair" and "the 1HFS volume checked needs repair"
    The clickable button that should be pressed to perform this repair is grayed out and non functional.
    How can I repair this disk?
    Re Hard drive specs:
    ST380013AS:
    Capacity: 74.53 GB
    Model: ST380013AS
    Revision: 3.42
    Serial Number: 5MR6P2DG
    Removable Media: No
    Detachable Drive: No
    BSD Name: disk0
    Protocol: ata
    Unit Number: 0
    Socket Type: Serial-ATA
    OS9 Drivers: No
    S.M.A.R.T. status: Verified
    Volumes:
    Tiger:
    Capacity: 74.41 GB
    Available: 46.94 GB
    Writable: Yes
    File System: Journaled HFS+
    BSD Name: disk0s3
    Mount Point: /

    Yes, you cannot repair the Disk while booted from the same one.
    "Try Disk Utility
    1. Insert the Mac OS X Tiger Install disc that came with your computer, then restart the computer while holding the C key.
    2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
    *Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
    3. Click the First Aid tab.
    4. Select your Mac OS X volume.
    5. Click Repair. Disk Utility checks and repairs the disk."
    http://docs.info.apple.com/article.html?artnum=106214
    Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
    (Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
    In the future... you do not want to Repair Permissions or do any writing the the HD if it needs repair.

  • I am trying to repair my disk permissions but hen I do the reboot start my mousepad doesn't work. What keyboard buttons to I hit to advance in reboot?

    The computer won't load regularly or in safe boot. I'm trying to repair the disk but I can't do it without my mousepad. How do I repair the disk with just my keyboard?  My computer is a few years old but I have the newest software.

    You should repair your hard drive with disk utility.  What version of Mac OS X are you using on your system, you should be able to start the computer by holding down the command + R keys it you are using Mac OS X 10.7 (Lion) or 10.8 Mountain Lion, Take a look at this link, http://support.apple.com/kb/HT1782?viewlocale=en_US&locale=en_US 

  • How do i repair or recover data from a corrupt USB external hard drive that does not show up on my Mac desktop or disk utility

    How do i repair or recover data from a corrupt USB external hard drive that does not show up on my Mac desktop or disk utility?
    Last night i was using my external hard drive, for some reason the folder just closed and i couldn't find it on my desktop.
    After googling solutions, i found it in the disk utilities, i clicked on the 'repair' button many times, but it said the 'error...' message.
    So i ejected it to try again, now when i connect the USB external hard drive it doesn't show up on my desktop or disk utilities.
    I really just want to either repair or recover the data on it because it literally has everything (documents, work files, photos etc) on it,
    I downloaded an application to recover my files but it needs the USB to at least show up.recognise it which mine doesn't.
    I know i should've backed it up on another USB, this definitely teaches me for next time to back up all my files.
    Are the files lost forever or can i recover them by going to a shop or using a software?

    Thank you for responding.
    This might sound stupid since i'm not really knowledgeable with Macs,
    but since all my files were moved from my mac computer to the external hard drive,
    is it possible to recover those files through my Mac - like recovering deleted files? 

  • How do i repair my hard drive in single user mode when disk is full?

    Hi there Apple Community!
    I have an old Macbook Pro 17" with an upgraded 500GB harddrive and 4GB memory. I'm running Mac OSX Lion.
    Was hoping you could help me out.  THis is the situation:
    Long story short I spilt wine on my macbook and the screen went a bit blobby. Switched it off for a few days, removed the battery etc. etc. Opened it up cleaned out as much of the wine as possible, but unfortunately some of it came in behind the LCD, so now the screen has a nice red stain.  Obviously I'm not going to try to clean that out of the LCD. 
    My Macbook Pro still worked for a few days after that, but then my harddrive gave up.  I booted in the Recovery HD menu, verified the drive and I got the error "Keys out of order - This disk needs to be repaired, click Repair Disk." I attempted to repair the disk but got the error "Keys out of order - Disk Full Error - The volume could not be repaired".
    Unfortnately of this 500GB I only have about 7GB free on it, as I have a huge iPhoto and iTunes library. I did make a TIme Machine backup of my user directory, but not the system files.  I don't really want to do a clean install because:
    1) I'm paranoid that there's something I did not fully back up
    2) I don't want to have to download the whole Mac OSX Lion again. I should have made a USB bootable backup when I had the chance.  I don't have access to a broadband connection.
    What I feel are my viable options, are as follows:
    1) I did buy a replacement internal 500GB harddrive, so I can probably try to make an image of the hard drive to this new drive, but not sure how. I believe it's through the Disk Utility with the "New Image" option but not sure how to go from there.
    2) Start up in Single User Mode and delete some unnecessary files and re-attempt to run the fschk -fy utility again (I tried this earlier and got the same Disk Full Error).  - the problem with this is, I'm not familiar with the command line and have no clue how to delete files.  I don't know my way around Unix.
    3) I can also probably attempt to make a Ghost Image or Acronis Image of the failed drive to this new drive, but not sure if Norton Ghost or Acronis True Image will be able to read this HFS drive - I believe it's possible as it's a simple hard drive clone. 
    If you can guide me in the best option - probably there is a better solution than my proposed ones above, I appreciate any feedback and comments you might have!

    hi Baltwo,
    So I ended up copying my user folder to another harddrive. I managed to download the whole osx lion again, reinstalled, and recovered my home folder using this discussion:
    http://support.apple.com/kb/HT1428
    I have managed to get all my files back. My iTunes library works fine, but my iPhoto library when I open it, get the following error:
    iPhoto cannot be opened because of a problem.
    Here's the error log
    Process:         iPhoto [1540]
    Path:            /Applications/iPhoto.app/Contents/MacOS/iPhoto
    Identifier:      com.apple.iPhoto
    Version:         8.1.2 (8.1.2)
    Build Info:      iPhotoProject-4240000~8
    Code Type:       X86 (Native)
    Parent Process:  launchd [209]
    Date/Time:       2012-09-19 19:56:45.528 +0200
    OS Version:      Mac OS X 10.7.4 (11E53)
    Report Version:  9
    Sleep/Wake UUID: 7948ABE2-5294-4F87-B6E3-777095A2F2EE
    Interval Since Last Report:          4780 sec
    Crashes Since Last Report:           9
    Per-App Crashes Since Last Report:   9
    Anonymous UUID:                      70117D38-03EA-4F9C-B810-50B743864B9E
    Crashed Thread:  0
    Exception Type:  EXC_BREAKPOINT (SIGTRAP)
    Exception Codes: 0x0000000000000002, 0x0000000000000000
    Application Specific Information:
    dyld: launch, loading dependent libraries
    Dyld Error Message:
      Library not loaded: /System/Library/PrivateFrameworks/iLifeSlideshow.framework/Versions/A/iLifeSlid eshow
      Referenced from: /Applications/iPhoto.app/Contents/MacOS/iPhoto
      Reason: image not found
    I've done an Apple Software Update but it didn't find an update for iPhoto.
    One thing to note is, this library was originally created on iLife 08, upgraded to '09 and it stayed on that version. It hasn't een upgraded to iLife '11.  It worked fine on my previous install of OSX Lion.  How do I recover the library without upgrading to '11 ?

  • How I installed Mountain Lion on Un-repairable Hard Disk.

    My Recommendations for Avoiding Trouble, Avoiding Risk, and Saving Time.
    1) Make a boot clone first!!!
          http://www.bombich.com/
    http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html
    2) Fix and repair your hard disk with Disk Utility and fsck_hfs before installing Mountain Lion!
        (Otherwise the installer will write-lock the disk preventing repair.)
    Mountain Lion Aborted Installation—Claimed Hard Disk Failed, Couldn't be Repaired, and Should be Replaced
    I have a 2011 MacBook Pro.  Installation of Mountain Lion aborted claiming the hard disk could not be repaired by Disk Utility, should be backed up immediately, and replaced.  It didn't make sense that the drive was booting up the computer for installation, but needed replacing.  I removed the drive, put it in an external enclosure, and backed up the drive using a working Mac Mini, and Carbon Copy Cloner.
    Hard Disk Was Write-Locked—Not Failing
    Booting in Single User mode (hold command and S keys down while bootup is proceeding).  I then typed in the fsck command given after Single User bootup.  It informed me the drive was write-locked and read only.  Now things were starting to make sense.  Disk Utility couldn't repair the drive because it was write-locked!  Maybe it could have been unlocked by the "chflags nouchg /Volumes/volume" or "chflags noschg /Volumes/volume" commands (http://hints.macworld.com/article.php?story=20031017061722471), but I didn't try it.  Unlocking the drive is really worht a try because it could save hours of coppying through a slow USB interface. 
    I formatted my laptop drive after copying it to another large external drive.  Then I used Carbon Copy Cloner to clone Snow Leopard from my Mac Mini to my freshly formatted original laptop drive.  I unsellected the "Users" folder so I would only get the operating system—saving lots of hours copying data I don't need.  Then I put the drive back in my laptop, and it booted with Snow Leopard.  Checked the volume with Disk Utility and was informed the drive is fine.  I removed the drive and connected it externally to my Mac Mini and ran fsck_hsf a few times in the terminal, which showed problems were found and fixed.
    sudo fsck_hfs -fy /dev/rdisk1s2
    Password:
    ** /dev/rdisk1s2 (NO WRITE)
       Executing fsck_hfs (version diskdev_cmds-491.6~3).
    ** Verifying volume when it is mounted with write access.
    ** Checking Journaled HFS Plus volume.
    ** Checking extents overflow file.
    ** Checking catalog file.
    ** Checking multi-linked files.
    ** Checking catalog hierarchy.
    ** Checking extended attributes file.
    ** Checking volume bitmap.
       Volume bitmap needs minor repair for under-allocation
    ** Checking volume information.
       Invalid volume file count
       (It should be 550614 instead of 550591)
       Invalid volume free block count
       (It should be 175459733 instead of 175460263)
    ** The volume MacBookPro HD was found corrupt and needs to be repaired.
    3) sudo fsck_hfs /dev/rdisk1s2
    Password:
    ** /dev/rdisk1s2 (NO WRITE)
       Executing fsck_hfs (version diskdev_cmds-491.6~3).
    ** Verifying volume when it is mounted with write access.
    ** Checking Journaled HFS Plus volume.
    fsck_hfs: Volume is journaled.  No checking performed.
    fsck_hfs: Use the -f option to force checking.
    [karl_ihrig] 4) sudo fsck_hfs -f /dev/rdisk1s2
    ** /dev/rdisk1s2 (NO WRITE)
       Executing fsck_hfs (version diskdev_cmds-491.6~3).
    ** Verifying volume when it is mounted with write access.
    ** Checking Journaled HFS Plus volume.
    ** Checking extents overflow file.
    ** Checking catalog file.
    ** Checking multi-linked files.
    ** Checking catalog hierarchy.
    ** Checking extended attributes file.
    ** Checking volume bitmap.
    ** Checking volume information.
    ** The volume MacBookPro HD appears to be OK.
    5) sudo fsck_hfs -fy /dev/rdisk1s2
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       Executing fsck_hfs (version diskdev_cmds-491.6~3).
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    ** Checking Journaled HFS Plus volume.
    ** Checking extents overflow file.
    ** Checking catalog file.
    ** Checking multi-linked files.
    ** Checking catalog hierarchy.
    ** Checking extended attributes file.
    ** Checking volume bitmap.
    ** Checking volume information.
    ** The volume MacBookPro HD appears to be OK.
    6) sudo fsck_hfs -fy /dev/disk1s2
    ** /dev/rdisk1s2 (NO WRITE)
       Executing fsck_hfs (version diskdev_cmds-491.6~3).
    ** Verifying volume when it is mounted with write access.
    ** Checking Journaled HFS Plus volume.
    ** Checking extents overflow file.
    ** Checking catalog file.
    ** Checking multi-linked files.
    ** Checking catalog hierarchy.
    ** Checking extended attributes file.
    ** Checking volume bitmap.
    ** Checking volume information.
    ** The volume MacBookPro HD appears to be OK.
    I put the drive back in the laptop and repeated the fsck commands after a Single User boot.  (Omited the sudo commands and used /dev/disk0s2.)
    Downloaded and Successfully Installed Mountain Lion on "Unreparable" Drive
    I downloaded the Mountan Lion installation application to my laptop, ran it, and had a smooth install. 
    More Trouble Migraiting My Applications and Directory
    I expect to use up more time changing my computer name, migrating applications and rsyncing my User Directory.  I will post how I achieve this. 
    I Hope People Avoid Trouble and Problems are Solved
    I hope everyone will avoid trouble by making boot clone of their whole disk before attempting an install of ML and repairing their disk with Disk Utility and fsck before ML installer prevents it with a write-lock.  Please see the first section.
    I hope this solves other peoples problems with 'unreparable' disks.  I believe this proves disks are repairable when ML says otherwise.
    Good luck everyone!

    troca, you certainly helped dtigerbme!  Isn't that encouraging?
    I recommend you copy your drive as soon as possible.  I really don't think the drive is bad, but you may have to format it and copy back to it.  Hopefully not.  Clone or backup the drive before trying this recipe.  Any time you have errors on a drive, back it up.  A failing drive has lmited life.  However, I don't think these drives are really failing, but that is my opinion and I break a lot of things.
    Let's try this recepie for you:
    Start in Single User Mode.  Power on while holding the Command + S keys.
    At the prompt, type "fsck_hfs -fy" or "fsck -fy" and hit return.
    Do it again.
    Enter the command "reboot".
    Just googled "volume count disk utility" and got the same recipe to fix it.
    http://counterjumper.com/post/19265700171/how-to-fix-invalid-volume-free-block-c ount-error-in
    So my recipe is to try to fix the drive without taking it out of the computer, which requires you can boot it up. 
    troca it looks like Apple has said that error is benign and can be ignored in 2010. 
    http://support.apple.com/kb/TS2028?viewlocale=en_US&locale=en_U
    I do believe fsck will fix it though.
    Some other results from the same search:
    http://forums.macrumors.com/showthread.php?t=1071850
    https://discussions.apple.com/thread/3635034?start=0&tstart=0

  • I can't burn a dvd using any method, Idvd tells me that my super drive is missing, dvd studio pro quits when i click burn and disk utility keeps spitting the disk out when i click burn and enter the disk??? how do i repair my superdrive for imac

    I can't burn a dvd using any method, idvd tells me that my super drive is missing, dvd studio pro quits when i click burn and disk utility keeps spitting the disk out when I click burn and enter the disk??? how do i repair my superdrive for imac, or how do I do whatever I need to do to get it working: I have already tried using a lens cleaning cd and also restored my nvram or something i forget what it was called but i restarted my computer holding down  command+optoion+p+r and still nothing???
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    Unless your iMac is still covered by AppleCare, get an external DVD burner.
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  • Hi,  Had boot issue and got the following from DU repair function on Macintosh hd: updating boot support.....Error: Disk utility can't repair this disk.....reformat and restore backed up files. How is that done or do I go to Genius?

    In reference to question the computer gave no warning but lost internet connectivity.  I shut down for a while and when returned it would only boot to gray logo screen with spinning gear.  Ran disk utility and on Mac HD drive it stopped after "Updating boot support partitions as required". Then in red: Error: Disk utility can' repair this disk ....disk, and restore backed up files.   I'm running OS X 10.8 and had just updated the iOS about three days ago.  Not familiar with reformat process on MacBook Pro and would like some ideas whether I should go to the Genius Bar here in Sydney or try it on my own.   I have been using time machine to back up to a 1TB La Cie drive right up to the crash.   Thanks for any advice.

    Well it turned out the drive was shot.  Took it to the genius bar yesterday and they ran a test on the drive before trying the restore routine again.  Drive failed. 
    Replaced the drive and got the MBP back today.  Pretty quick and decent service once you get an appointment. 
    Now having trouble figuring how to do the Time Machine  saved files.  Have several applications which I'd like to keep but not sure how to trans the apps from my backup to the new.  Hunting for answers on that on the web.
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  • How can I repair 10.6.8 when the disk my computer came with is 10.5.4?

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    How did you upgrade to Snow Leopard? You must have purchased the retail Snow Leopard DVD. That is your installation disc. I would not do repairs using a Leopard copy of Disk Utility.

  • How do i repair a corrupt hard drive and i lost my install disk

    My Macbook started acting up....when rebooting there was a flashing file folder with a ? inside. Finally got to reboot, ran Disk Verfiy and my hard drive is corrupt. We just moved and I have no install disc. How do I repair my hard drive?

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    4. Contact apple to try to replace your installer dvds.

  • I installed Lion online and i ran disk repair and found that i needed to do a repair  but i have no start up disk.  How do i repair without burning a disk?

    I installed Lion online and i ran disk repair and found that i needed to do a repair  but i have no start up disk.  How do i repair without burning a disk?

    Lion creates a Recovery partition on your harddrive. You will need to boot from startup.
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