Mountain lion start-up disk

How do I create a start-up disk for mountain lion. I used lion for my original start-up disk and since that time have upgraded to Mountain Lion. Since I have noticed my computer slowing down, problems printing pdf's etc, I thought it would be a great time to re-format my hard drive and re-install Mountain Lion. Not sure how to create a mountain lion installer.

This is for Lion but applies to Mountain Lion:
http://www.macworld.com/article/1162628/lion_repair_kit.html

Similar Messages

  • Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).

    Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).

    Read
    https://discussions.apple.com/message/15659267#15659267

  • Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition

    just bough OSX Mountain Lion, my laptop operating with v10.6.8.  Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition table. 24.44gb disk available.

    Verify your computer can run Mountain Lion:
    Upgrading to Mountain Lion
    To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
         OS X Mountain Lion - System Requirements
           Macs that can be upgraded to OS X Mountain Lion
             1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
             2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
             3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
             4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
             5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
             6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
             7. Xserve (Early 2009) - Model Identifier 3,1 or later
    To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
    Open Disk Utility and verify the drive is partitioned using GUID and formatted Mac OS Extended, Journaled. If it is then do this:
    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 return to 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.
    Now try installing Mountain Lion.

  • I do not have a high speed internet connection. How can I get Mountain Lion on a disk for install?

    I do not have a high speed internet connection. How can I get Mountain Lion on a disk for install on my 24" Imac?

    As long as you use your Apple ID to purchase it, I don't see why they wouldn't let you download the installer on one of their Macs and put it on a pocket drive.
    Or, a friend with a high speed connection?
    I agree with you about the delivery method, just trying to help you get what you want.

  • Error when trying to install Mountain Lion - says hard disk is damaged :(

    I downloaded and installed Mountain Lion on my iMac today - without any problems. But when I downloaded it to my Macbook pro (bought 2010) I get an error message telling me the installation cannot continue due to hard disk error My harddisk was fine before the installation, to my knowledge ...
    Of course I tried disk utility (during the installation) and it tells me the disk needs to be repaired but I can´t choose "Repair disk" since it is grey (no write permissions it says). What can I do? I really need help!!!

    I rarely post, however, because of a major screw up with Mountain Lion, I will.  I have been using mac computers since 1987, have obviously installed and upgraded multiple OS new and upgrades and never, I mean never had a problem with any of them, until now.  The install stalled with the message that the hard disk needed repair.  I thought all of my data was lost, except for time machine backup, which was not as current as it should have been.  Losing that data would have been a royal pain. 
    Went through the restore OS from Time Machine, then tried to repair the disk with apple disk repair utility.  Not repairable.  Why?  I still don't have a clue.  After reading multiple threads, decided to go ahead and buy DiskWarrior.  This was a weird experienc.  Loaded it onto external hard drive, hooked my MacBook Pro as Target disk.  Loaded in DiskWarrior as hardware probelm.  ????  Immediately went online to see what advice about this message.  Looked like a massive coincidence had hit my laptop.  Worked perfectly until loading Mountain Lion, the decided to have hard disk melt down.  Suddenly, DiskWarrior indicated it was ready to rebuild my directory.  The hardware warning was gone.  A few minutes later, directory repaired.  Rebooted, same problem.  Can't load OS X, need to repair hard disk.  Apple disk repair still unable to repair disk.  Used DiskWarrior, repaired it no problem. 
    Deleted original OS 10.8 dmg.  Rebooted and downloaded fresh copy of OS 10.8.  This time install went flawlessly.  Mountain Lion transferred all info flawlessly.  Mid 2009 MacBook Pro running flawlessly and actually more smoothly now than in Lion.
    1.  I think original download was somehow corrupted and that is what screwed up the disk directory.
    2.  I do not know why apple Disk Utility would not repair the disk and Disk Warrior would.  Expensive fix, but ultimately worthwhile.  Did it mysefl and did not have to mess with "Genius" bar.
    3.  I will never go so long without backup again.  That was a big mistake.
    My advice:
    1.  Be sure you have smooth download of entire Mountain Lion file, if not, start over.  My download was paused a couple of times.
    2.  If the install is messed up and you need Disk Repair, buy DiskWarrior and repair directory, it works flawlessly.  If it initially says your disk has hardware problem, wait a few minutes while it finishes entire evaluation.  It may well disappear like mine did, then actually repair the directories without a problem.
    3.  Be sure you have deleted old OS 10.8 Install file and load fresh one.
    4.  Install OS 10.8 and you should be OK.
    5.  Good luck.
    Mountain Lion seems to have some problems, but many of them may be due to server overload at apple, delayed download with incorporated unrecognized code problems.  If there is any delay, start over and get a smooth download.
    Disk Utility is too light weight.  Apple needs to beef it up.  This is my biggest complaint.  Apple utility should be able to fix disks.  We should not have to spend $100 to fix a disk, but there you are.
    Once fixed however, back to usual beautiful, flawless apple experience.

  • Brand new OS X Mountain Lion starts in grey screen login window doesn't know me verify passwords all jacked up says to get external hard drive recovery so I have to spend more moneyon my brand new computer or can I fix and safe boot

    brand new OS X Mountain Lion  Bought in November 2012 starts in grey screen login window doesn't know me, went to utility dIsk ,verify passwords all jacked up, I Engaged repair passwords then press verified Macintosh HD it said Macintosh HD is OK but repair disk button was still lit up and wanted me to make a recovery disk external hard drive and such,please tell me I can fix in safe boot..

    The repair button is always clickable when you are on your Recovery partition, it's nothing to worry about.  Do this instead.
    Then start in single user mode (Command-S)
    Type fsck -fy to check your disk first (it wont let you start working on a disk until you have checked it)
    Then type mount -uw / (dont forget the slash) to mount your Macintosh HDD
    Then type passwd username with username being the username of your admin account
    It will make you type the new password twice afterwards. From then you can boot into OSX as normal and use that account to fix the rest of your passwords.

  • Unable to install mountain lion...disk error??

    Guys..is there any way to skip this mountain lion installation? i dont understand why i got
    this disk error message when i tried to upgrade in Mountain Lion even though my MBP 2011 LION is OK.
    I need your expertise here..Please!! Thank you!! :(

    Just quit the installer - you should be able to do that. There should be a file still in your Applications folder named "Install OS X Mountain Lion.app". Just leave it alone for a moment. Then download Lion DiskMaker and make a bootable USB install flash drive and/or DVD.
    Then start up using your Recovery partition (Command and R keys held down on boot) and select Disk Utility and verify and, if need, repair your disk. Reboot and try installing Mountain Lion using your USB installer. Everything should work fine - unless there are errors found on your disk that can't be repaired.
    Good luck,
    Clinton

  • HT4718 Installing mountain lion from external disk

    I am trying to install lion mountain but it's Beig stuck at the same place

    I'm not sure where you read that about the disk being "write-locked." That doesn't make much sense, given that the major task an installer like this must achieve is writing a whole bunch of files to the hard drive. I think your source was mistaken.
    As to what happened, it sounds like your hard drive was badly corrupt to start with, or possibly was on the edge of failing and is now in the process of dying entirely. If you don't have backups of your data, that does not bode well for you, unfortunately. If you can manage to use target mode to copy your data, do that.
    Once you're sure you've got all your data, you need to start up from your Snow Leopard install disk and repair the hard drive. (Since it sounds like the Mountain Lion installer didn't work, I wouldn't trust the recovery partition that Mountain Lion installs.) Or, even better, just erase the hard drive entirely and reinstall Snow Leopard. Then, once you're back up and running, with all your data back on the system and with Snow Leopard updated to the most recent version, try installing Mountain Lion again. If any of that fails again, the problem is likely to be a dying hard drive, and you'll need to replace it.

  • Mountain Lion start up stuck at grey/white screen

    When I went to start up my computer this morning, it started with the chime, then the apple on the grey screen, then the white screen with the pointer was up, then it went back to the grey screen with the gear, then the white with pointer for ever.
    I followed the suggested trouble shooting at the "grey screen appears during startup" and when I did the Safe Boot, I am able to log in as guest and under my secondary log in, but not my main log in. When I try to log in under my primary, the screen gets to the white with pointer then back to the log in screen.
    I went on to reset the pram, then ran disk utility from my secondary log in along with AppleJack. Both made some premissions corrections but I still can not log in under my primary login.
    I did check my power cables and pluged indirectly to the wall.
    I took the memory out and reset it, and will try my apple memory when I pull it from my computer at work. This one has crucial RAM, which works fine with the other logins.
    Have I missed anything?
    Thanks

    When I got back to the computer in the morning, it was back to the OO Utillities box in the Mountian Lion recovery. It said it would restart after install but I thought that meant it would be a regular start and not just within the recovery mode.
    I will attempt to reinstall ML in the recovery mode again, just in case something happened in the middle I'd the night with my download.
    After restart and selecting the HD it is still droning the same thing.
    The laptop I was going to use to swap out memory with has been checked out, will have to wait until it comes back in. Until then, I still have my iPad...
    Since I am sitting here in front of it, let me clarif:
    Start up
    whitish grey screen
    Apple icon, then gear, for 3 to 5 minutes,
    Gear stops spinning, icon and gear disappear,
    pointer appears upper left,
    Screen changes color to white, pointer disappeared, then changed color to light blue
    At this point the cycle begins: after light blue 2 seconds, back to grayish white 1 to 2 seconds, pointer reappears in the upper left 11 seconds, back to lite blue with no pointer
    if I now what was happening inside when the screen is changing color, I might be able too narrow it down.
    Thanks for you suggestions, the Mountain Lion download begins again...

  • Where can I get a mountain lion download or disk. Mavericks I need to downgrade

    I upgraded to Maverick when it came out. Unfortunately, I did not have a backup of the disk with Mountain lion on it. The laptop came with mountain lion preloaded. How can I get another copy?
    <Subject Edited by Host>

    If your Mac came new with Mt Lion Pre-Installed it will always be available to you.
    You have to boot the computer to the Online Internet recovery system by holding down the Command + Option/Alt + r key at startup and hold them down until you see a globe on the screen. That willl boot the computer from the Apple servers from across the internet. Once that fully loads you can use Disk Utility to repartition the drive as one partition to remove all traces of Mavericks and then use the other option, once you exit disk utility, to Reinstall Mac OS X and Mt Lion will be downloaed from the internet.
    You can also use that same system, once Mt Lion is reinstalled on your hard drive, to save a copy of the download and make your own Mt Lion reinstall DVD or Thumb drive. Google search for make your own Lion, Mt Lion reiinstall thumb drive for directions.

  • MacOS X Mountain Lion and SSD disks

    Hi All,
    When I'm setting up the  MacOS X Mountain Lion from the scratch, shall I make any system adjustments after installation complete to prolonge the lifetime of my SSD drive?
    Or the installator can define the hardware it is installing the system on and it will make necessary adjustments automatically?
    Thanks in advance.

    If you use a non-Apple SSD then you may need to install software to activate TRIM support: TRIM Enabler 2.2.
    The newly installed SSD needs to be properly prepped for OS X:
    Drive Preparation
    1. Open Disk Utility in your Utilities folder.
    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. 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. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
    5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
    6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

  • Clean hard drive before selling; how do i get mountain lion on a disk for re-install?

    Hope to resell old macbook pro and wish to clean hard drive. Need a CD of OSX to reinstall after cleaning. How do I get mountain lion on a CD?

    Mountain Lion does not come on discs of any kind. But you don't need one. You'll find instructions for getting your machine ready for sale here:
    How to prepare your Mac for sale

  • Mountain lion start up problems

    I downloaded Microsoft lion for the first time today on my mac book pro 2011 edition. since it has restarted I haven't been able to get past the white screen with the apple and circle. I have pressed command and alt and r but this just connects me to the Internet- which then gives me options none of which seem to fix whatever problem there is....please help!!!!!!

    Try rebooting to the recovery mode, and then use Disk Utility there to check the hard drive for errors and run a permissions fix on the boot drive (done by selecting the boot volume and clicking the corresponding options in the First Aid tab).
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    Finally, if you still cannot get it to boot, then try using the option to reinstall OS X in the Recovery tools. This will not change your installed applications, personal data, and settings, and should only reapply the operating system software underneath everything.

  • OS Mountain Lion start up chime

    I know that the start up chime indicated a successful start up. But I am often in places where that BONG is not welcome. How do I shut it off? OS Lion had an app for that.

    Using an app like startup Ninja will help

  • Moving itunes library in Mountain lion from hard disk

    My iTunes library is on a external hard disk with the rest of my old computer's stuff  , I want to transfer all my music in my new iMac , I want to make sure what I am about to do is correct...
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    In the new computer finder ,I located the blue file "iTunes media" in  users/music/itunes/itunes media
    Do I simply drag the first file in the other one ??

    I just transferred my iTunes media to an external drive, but it sounds like you want to go the other direction.  I would suggest you follow Apple's recommend procedure rather than just dragging the folder:
    http://support.apple.com/kb/HT1449
    or,
    http://support.apple.com/kb/HT4527
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