Tried to Upgrade to Yosemite - Mac Got Locked! - HELP!!!

Today I tried to upgrade my late 2013 15" MacBook Pro Retina from Mavericks to Yosemite. After launching the installation, the computer restarted and within 30 seconds it displayed a screen asking for a four-character password and the following message "Enter your system lock PIN code to unlock this Mac."! I cannot bypass this screen and I have no clue what this password might bemas I never set one.
I called Apple Canada and was with them for four hours on the phone. No result other than the fact that my computer appears to be iCloud locked. I only remember experimenting and trying to lock it once through my iClold account 6-8 months ago and the procedure had no effect on the Mac at that time (although it locked my iPnone and iPad). The Apple guy thinks that that the very old command might have activated now. But how do I unlock it my computer now?
On the phone, Apple advised me to go to an Apple Store to see the Genius Bar. But the earliest appointments are available on Wednesday next week and Saturday I need to fly to the UK on business for a week and all my work files and presentations I need to make are on the locked computer.
What has Apple done to my computer? How could they lock me like this out of my data? Please let me know what do I have to do to recover access to my computer and data as soon as possible?
Many thanks.

I did the same thing, I realised what I did wrong after it was too late and ended up with the 'white no entry sign' on the black screen.
I did manage to sort it, but because the solution happened so fast, I can't recall the exact details, but here is a general guide: Please read all of this before following the sequence I went through.
After much messing around searching the net on another machine and getting nowhere I decided to do a re-install the system. I started the Mac holding down Command-R. I then opted to re-install the software thinking that I was going to lose everything. I clicked on the Install button and it would not let me re-install the system because the drive was locked. This turned out to be an amazing stroke of luck.
I then went to Time Machine out of curiosity more than anything else, and this is where I can't remember exactly what happened. I think I went to see if there were any backup, knowing there was not! but it gave me the option to 'unlock' the drive. I did this, immediately shutdown and re-started and I was then able to get back in as normal. I then went straight into Filevault and made sure that it was switched off.
I hope that helps.

Similar Messages

Currently on Mountain Lion. Tried to upgrade to Yosemite. Computer is now locked onto OSX installation page. No access to finder or anything. Have to push off button to shut computer down.

iMac running Mountain Lion.... Yesterday, I tried to upgrade to Yosemite. System seemed to be upgrading. However, the OSX installation window is now frozen on the computer with the blue bar showing installation complete. I do not have access to even the finder. Force quitting with keys is not working. The only way I can shut the computer down is to hold down the on/off button. Restarting brings up the same frozen OSX installation window. What to do?
Cherie

There are three ways:
A. Reinstalling Yosemite, Mavericks, Lion/Mountain Lion 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.
B. Install or Reinstall from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard 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.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
        the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall Yosemite: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.
C. Internet Recovery
Install OS X Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your newly installed 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.
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. Quit DU and return to the main menu.
Reinstall Yosemite: Select Reinstall OS X and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
This should restore the version of OS X originally pre-installed on the computer.

I am trying to upgrade to yosemite (for imac) from version 10.6.8 but even though i have 70gb available on my hard drive it wont let me upgrade because it says i dont have enough memory!! what can i do??

i am trying to upgrade to yosemite (for imac) from version 10.6.8 but even though i have 70gb available on my hard drive it wont let me upgrade because it says i dont have enough memory!! what can i do??

Install more RAM in the computer; the Mac needs to have at least 2GB of RAM and should have 4GB or more first.
(125734)

HT201364 Trying to upgrade to Yosemite

I am trying to upgrade to Yosemite and I have Snow Leopard 10.6.8 installed and 2GB of memory and plenty of free space on my hard drive, but when I try to upgrade it just says, "This version of OS X 10.10 cannot be installed on this computer" with no further explanation. Any ideas?

A Mid 2007 MacBook is a MacBook2,1.
According to Eric Root it must be 3,1 or higher and I have 2,1.
The 3,1 number is for a MacBook Pro, you have a MacBook, not a MacBook Pro. The minimum requirement for a MacBook is 5,1, as stated by Eric.
See: http://support.apple.com/en-us/HT201608 This will translate model identifier numbers to introductory year model names.

I bought an iphone3g from ebay and then i tried to upgrade it but it was locked by apple store now what can i do?as it is not my fault and it is not illegal to buy phone from ebay.

i bought an iphone3g from ebay and then i tried to upgrade it but it was locked by apple store now what can i do?as it is not my fault and it is not illegal to buy phone from ebay.

caveat emptor
x

Freezing Mac after trying to upgrade to Yosemite

Those are the screens I will still be getting and spend 4 times with Apple-support chat, restarted with command,option,P,R and still the same.

No non-Apple kexts present.
a really wacky hfs error is occurring.
It is crashing in backupd.
I expect there is something unusual or damaged about the drive you are trying to update. Yosemite makes some big changes to the hfs layout of the drive, and it appears that is not working.

Hello, I am trying to upgrade to yosemite, but I get the "disk cannot be used to startup your computer" error. Resizing the partition does not work, I get the error "MediaKit reports no such partition" probably because I installed linux in dual boot

Hello, I am trying to upgrade my macbook pro to yosemite, but I get the "disk cannot be used to startup your computer" error.
Resizing the partition does not work for me and I get the error "MediaKit reports no such partition" probably because I installed linux in dual boot and the disk manager is lost.
Anyway to tell the yosemite installer that it should not pay attention whether the disk is bootable or not ?
If I am doomed, any way to delete the installer and downloaded OS from my hard drive ?
Thanks for your help

As usual, the Linux installer wrecked the partition table. You would have to boot from your OS X installation disc and repartition. Doing so will of course remove all data from the drive, so you must back up first if you haven't already done so.

Upgraded to Yosemite, File Vault locked me out, help!

I decided to upgrade to Yosemite, and after the installation something happened somehow, and file vault lost the password for my account making it impossible for me to log in. I have tried to restore from my time machine back ups but the issue remains no matter the date of my backup. I have also tried to wipe the drive and start over hoping to manually restore everything bit by bit from time machine, but it seems as though the drive is encrypted and I cannot access any files other than the system files??
help please!!

Filevault can't have lost your account password it is a system for encrypting the data on your hard drive to prevent people from accessing it without the password. If anything went wrong in that process you cannot break the encryption on that in any easy fashion. Call AppleCare for further assistance since its a new OS you will not be charged for assistance. I had the same problem last year, I enabled filevault and lost my recovery key after a move, luckily I chose to send a copy to Apple during its setup and they could get me sorted out. Good Luck.

HT1414 My daughters ipod touch newer version has been disabled. She forgot her password and tried to figure it out but got locked out. We have turned it on and off and it also says connect to itunes. I have tried to reinstall the updated itunes but eve

Help ipod touch. Newer version. Turns on and off but does nothing else. Says on it ipod is disabled. Connect to itunes. what should i do? My daughter could not recall her password and tried too many numbers now it is locked and we cant get it to do a thing. ugh!

Try: http://support.apple.com/kb/HT1808

Kodak printer will not work after upgrading to Yosemite.. Please Help

I have uninstalled and re installed my kodak 5250 more than once and it still does not work. I have carried out a clean install of my Yosemite OS and still no joy. How do i fix this?

I've got the 7250 as well -- same exact issue. I sent an e-mail to Kodak support on Friday last week -- haven't heard anything, but they did ask for 2 business days time to respond.
I've been running the Yosemite Beta on one of my machines for a few months now and my printer stopped working on that one after the upgrade. I kept Mavericks on my other Mac until this weekend, and printing still worked from that machine until I upgraded to Yosemite over the weekend.
I've got Linux and Windows virtual machines that can print to the ESP 7250, so I can still print, albeit with the hassle of firing up a VM and printing from there... I sure hope Kodak responds! I offered to help them test any beta-quality drivers they may have, so -- we'll see what they say!
I've been planning to ditch the printer and get a new one, but I'd rather not have to do it right this minute just for a driver issue :-/

New mac 21.5, tried to upgrade to Yosemite get error, what's up

Just bought an iMac, tried to download Yosemite upgrade, get error, what to do.

Since it's a new machine, contact Apple's Support and let them deal with the problem. You have 90-days free phone support
27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

HT1338 I am running on 10.5.8 and my mac says that I don't need system updates when clearly I do since I am running on Leopard. I have been trying to upgrade and my mac wont allow me? What's wrong with my macbook?

I need help!

Upgrade Paths to Snow Leopard, Lion, and/or Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard — Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service — this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
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.
Are my applications compatible?
         See App Compatibility Table — RoaringApps.
     For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.

Tried to upgrade to iOS4 and got error while restoring i pod.

I tried upgrading to iOS4 from iTunes 9.2.1 running on my iMac G5 running OSX version 10.5.8. An error occurred while restoring the ipod: (-402653173) and the i Pod is now frozen and unusable.

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Trying to upgrade from old mac to new. old mac can't find new mac in the migration program any suggestions

I purchased a new mac and am trying to migrate my hard drive from the old to the new. I follow the instructions, but my source computer can not find my target computer. The target has no problem finding the source. Any suggestions as to how I can get this done?

See Pondini's Setup New Mac guide.
27" i7 iMac (Mid 2011) refurb, OS X Mavericks (10.9.4), ML & SL, G4 450 MP w/Leopard, 9.2.2

When trying to upgrade to ios5, i got the following message

The following install step failed: run preupgrade script for AppleMobileDeviceSupport. Contact the software manufacturer for assistance.

Welcome to the Apple Support Communities
Mountain Lion is a 64-bit operating system, and an Intel Core Duo processor is only 32-bit, so you can't use Mountain Lion on your Mac. You can keep using your actual OS X version or buy a new Mac if you want Mountain Lion

Tried to Upgrade to Yosemite - Mac Got Locked! - HELP!!!

Similar Messages

Maybe you are looking for