HT4718 I recently upgrade my OS and now my MacBook Pro will not boot up
I recently upgrade my OS and now my MacBook Pro will not boot up
Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. 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 then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.
Similar Messages
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I recently updated to Mavericks, and now my macbook pro will not boot
Last week I updated my summer 2011 mackbook pro to the Mavericks OS, Now all I get when I turn it on is the grey apple logo and the loading wheel.
Ive tried booting in safe mode and it made no difference.
I left it loading for about 2 hours and it managed to boot up, it then took a further 40 minutes to load after I typed in my password but then I couldn't do anything.
Any help or suggestions? do you think if I to the genius bar they would be able to fix it?There's really no telling what's wrong with your machine. A trip to your local Apple Store may be warranted as they have the diagnostic testing equipment to find out if you've a hardware or software problem.
Good luck,
Clinton -
I dropped my external HD on my hard tile floor and now the drive is not working properly. I have tried a repair in Disc Ultilies with First Aid with no such luck. It started to work then I got a message "Filesystem verify or repair failed" about 3-4 minutes into the first aid repair disk. When I plug in I get the disk you inserted was not readable by this computer message. Please I need help on restoring this drive!
Its a simple tech pro drive 1TB.Unfortunately, a drive that has been mechanically damaged by a drop and can't be repaired using Disk Utility probably can't be fixed any other way either. The best you can hope for is to salvage as much data from the drive as possible using one of the data recovery utilities linked below, and then replace the drive.
http://www.prosofteng.com/products/data_rescue.php
http://subrosasoft.com/OSXSoftware/index.php?main_page=product_info&products_id= 1
http://download.cnet.com/VirtualLab-Data-Recovery/3000-2094_4-10298807.html
If you can't recover your most important data using one of these utilities, the only remaining hope is a data recovery service, which is very likely to cost $1000 or more for a 1TB drive. -
I accidentally deleted a system file and my macbook pro will not boot
i accidentally deleted some files and i am guessing now that they were system files. now my macbook pro will not boot. i need help please
What OS version are you on? You're not running iOS 6.1.2 on it.
If you're on 10.7 or 10.8, try the recovery option:
http://support.apple.com/kb/HT4718 -
Macbook pro will not boot. I get the gray screen, an apple icon and spinning wheel. I tried to start in safe mode, but get this same screen. The only thing different is that I added the zedge update app to do a sync for adding ringtones to my apple cell phone. How can I get a good boot. I am fairly new to apple computer.
Reset PRAM: http://support.apple.com/kb/PH4405 and then try a normal boot.
Run the Startup Manager to select Startup disk: http://support.apple.com/kb/HT1310
If those did not work your disk may be sick or dying. The top priority at this point is to make a backup copy of your data.
Check the health of the disk. Boot in Recovery Mode (Boot, Command-R). Run Disk Utility. Click on the upper left disk icon. Does the S.M.A.R.T. status say “Verified”? If not the disk/SSD is unhealthy and needs to be replaced. Even if it does not show “Verified” you can still attempt a backup.
Click on the icon indented below, usually called “Macintosh HD” and Verify Disk. If it finishes with a green “OK” message then all is well with the disk. If it shows errors in red then you have found a problem to address once the system is backed up. Do not attempt software repairs until you have secured the data.
If the disk will not show up at all in Disk Utility as your ran the tests above then it may be dead or it may have a bad internal SATA cable. A trip to an Apple store for confirmation would be in order.
If you have an external disk drive you can use as a backup drive then do so. If not Google “Hitachi USB 3.0 external hard drive 1TB” to purchase one or go to a brick-and-mortar store (including an Apple store) to pickup one. Any 1 TB external drive will do.
Assuming it is still breathing you can try to recover the data without booting from the sick disk.
Reformat the external disk. (This will erase all data on the external disk.)
Boot in Recovery Mode. Start Disk Utility. Plug in the new disk. Select it’s disk Icon (the second one down, left justified). Select the Partition tab.
Partition Layout > Single Partition
Name: Emergency Recovery 1 (or whatever name you wish to use)
Format: Mac OS Extended (journaled)
Options… > GUID Partition Table > OK
Apply
Select the Restore tab.
Drag the old system volume (Macintosh HD) to Source.
Drag the new disk volume (Emergency Recovery 1) to Destination.
Click on Restore.
It may take a long time for the backup.
If that will not complete post back for other emergency data recovery methods, including those from a brody.
If the backup succeeds, use the First Aid tab in Disk Utility to select the old volume (Macintosh HD) and Repair Disk. If it does not finish with a green OK message try to repair it once or twice more. If it repairs with a green OK message, will it boot normally? If not, boot from the Recovery Partition and reinstall OS X.
If it is still not healthy, post back for further instructions. -
How do I uninstall Yosemite please ? Since I upgraded my 2011 MacBook Pro will not boot up
My 2011 MacBook Pro will not boot up following my upgrade to Yosemite. How do I uninstall or downgrade back to the previous version of OS please ?
You can't downgrade or uninstall unless you first erase the drive. Try the following:
Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. 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 main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless. -
Help! Installing updates an error occurred now my MacBook Pro will not restart. "Unable to find driver for this platform"
Did you try more than once? If so:
Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. 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 then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless. -
My Macbook Pro will not boot up. I can hear the sound that it has started and then it goes into an infinite loop.
What model MBP and which version of OS X? Sounds as if the hard drive may have failed. If you have an installation disc, try booting with it. If your machine came with Lion or Mountain Lion, try booting to the Recovery partition - Command and R keys held down while booting.
Clinton -
my macbook pro will not boot. It gets the grey screen with the apple until the bar is half way across and then shuts down. The only screen I can get to is in safe mode and I don't know what to do with that
Mac OS X: Gray screen appears during startup - Apple Support
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I interrupted a software update and my macbook pro will not boot. I have tried to reboot using the startup disc, I have tried to verify the disc, and repair the disc. It tells me I need to erase and reformat the hard drive then reinstall the operating system. I do not have a back up of all my applications, my garageband music and other things. I also do not have time capsule set up on this machine, but I do have a 2 TB time capsule.
Is there anyway to back up this corrupted drive so I can restore my applications later?There's an old saying. If you don't have a backup disc, then there must be nothing important to backup. That's just lesson #1. Lesson #2 is to never interrupt a software update. Not a good thing.
OK, I'm sure you know this. It just upsets me to read your story, knowing you have a lot of important stuff on your hard drive, and didn't use time machine.
You're pretty much in a bad place. My only hope for you is to boot to your Installation Disc, then using disk utility see if you can save the internal hard drive (by fixing what can be fixed). You might be able to see your user folder and some of your apps. I wouldn't even consider copying the library, because who knows what's been corrupted in there.
Good luck. -
MAc book pro. I have downloaded and installed os x yosemite now mac book pro will not start? How long should it take? Is there something wrong?
The 2 computers here took about 45 minutes to an hour each.
The best thing to do is give it more time. If it gets too ridiculous, shutdown using the power button and then restart. Check menu/About This Mac to see if it is installed. -
After updating to 10.10.3, now my Macbook Pro 15" (mid-2014) will not stay logged in. I log in after restarting, and it will stay logged in for 3-5 seconds then immediately log off and go back to the login screen. Any help?
By the way, I also updated my Macbook Pro 17" (mid-2009) and it seems to be running fine, though I haven't tried to restart it and log in. I'm afraid I won't be able to get this one to work either if I do.Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login 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.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test. -
Deleted all .kext files and now my macbook pro would not switch on. What do I need to do?
By mistake I deleted all .kext files in the extensions folder and now the macbook will not go past the error screen at the start up with panic kernel. What do I need to do? How do I restore from back up drive or even re install OS???
Are you able to get into Recovery Mode (Command+R) at startup?
If your back up is a Time Machine back up you can boot from it by restarting while holding the Option key and select the back up drive. From there you can reinstall OS X Mavericks or Restore. -
After installing ProTools 10 and I have a drivers I tried to restart my MacBook Pro, but it will not boot up. It was just working fine and I restarted it because I ran a java upgrade and it will not boot. I tried to cold boot it, but it still allows me to login in pass the encryption login the the loading symbol keeps revolving and doesn't stop.
If you've activated FileVault, only the users that were authorized to unlock the startup volume will appear in the pre-startup authentication dialog. Once the system has started up, all users will appear in the login dialog.
To authorize more users after the volume has been encrypted, select the FileVault tab in the Security & Privacy preference pane. Click the lock icon in the lower left corner and authenticate to unlock the settings, if necessary. Click Enable Users...
You should only enable users whom you trust implicitly with all data on the system, not just their own data. -
I erased my hard drive and now my Macbook pro won't boot
I bought a new macbook pro the other day, so I decided to erase the hard drive on my 2010 Macbook pro and reinstall my OS cleanly. I erased the hard drive and tried an internet recovery. It downloaded the recovery and would not boot. Tried resetting everything you could name of and it doesn't help. Can't get anywhere with command R, it just freezes. Safe mode won't boot. Command V, eventually ends with an error saying to return to old smc. I pulled the hard drive out and put it in another mac from about the same year and through internet recovery, actually loaded OS Lion back on it. I put it back in the problem mac, and it just freezes at the apple logo and spinning wheel. Can't understand why erasing the hard drive would effect any hardware, but maybe it messed with logic board somehow? I've now tried using the Recovery partition, since OS Lion was loaded on the drive, but it freezes there as well. Any help would be appreciated. Thanks
Are you sure it came with Lion?
Check out the support page for what build shipped with which OS.
PJRS
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