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Press thealt or option buttons while pressing the power button to select Mac OSX or Windows


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I did put my mac book pro's disk on a case, the from another mac I erased all the /System/Library/Extension/AMD*. (How to disable discrete graphics card and use only integrated graphics MacBook Pro Early 2011?). I was able to boot on the Original 2011 Macbook Pro 15'' El Capitan make imposible to boot in the single user mode and move all those files ...


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The results you posted from the readgpt command leads me the following conclusions about your drive's partitions. The six partitions are listed in the order found on the drive. ~200 MB EFI partition (Usually hidden from the user) ~100 GB Windows partition ~75 GB OS X partition ~50 GB Windows partition ~650 MB OS X recovery partition (This is exactly the ...


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If you want to EFI boot the installer you need to flash your firmware from MacPro4,1 to MacPro5,1. Create an installer like mentioned here without any bootmgr files to force an EFI boot. Remove all disks from Mac Pro to avoid further trouble with Mac EFI looking for MBR or protected MBR. EFI boot your installer. Be sure to clean the unneeded Bootcamp ...


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Follow the steps from the link below to create a OS X USB installer: http://www.macworld.com/article/2981585/operating-systems/how-to-make-a-bootable-os-x-10-11-el-capitan-installer-drive.html PS: use USB 2.0 storage device to do it and it's gonna work! USB 3.0 storage devices will not work for this!


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Try using single user mode to repair your disk: http://osxdaily.com/2013/08/07/how-to-repair-a-mac-disk-with-fsck-from-single-user-mode/


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Here kayover.deviantart.com/art/OS-X-Darwin-Bitmap-Font-609139414


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To correct the GUID error in your GPT, you need to start up from OS X Recovery over the Internet. Press and hold the command(⌘)optionR keys immediately after you turn on your Mac and hear the startup sound. For more information see the site: OS X: About OS X Recovery. Once started to OS X Recovery, select the Terminal application from the menu bar. Enter the ...


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Ok, I would like someone to close this topic, because our problem is fixed. My dad took it to the Genius Bar at our Local Apple store, and they found out it was a problem with the power supply. (Not sure how that happened, especially considering the symptoms the Mac had) But anyway, thank you for all of your help.


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Try this: Go to System Settings -> Users and Groups CLick the Login Items tab. If the program is listed here, you should be able to hide it when logging in by check the box next to the program item or if you don't want it to open automatically (in case you don't need to access NTFS formatted drives) you can highlight the item and click the minus in the ...


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First, Some Diagnostics While SSD's will give you a boost in speed simply replacing one with the hopes it solves a problem could get expensive. Let's verify that the problem is the drive in the first place and not something else. If you can log into your system, open Terminal and issue the command diskutil list You will get a listing of all your drives ...


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It makes it the main boot disk so it will continue to boot from that disk. It's equivalent to the Startup Disk preference pane in System Preferences, only done in a different place so you don't have to boot into OS X.


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boot.efi–the thing we're taling about here–is installation specific and is loaded after the hardware boot to handoff to the operating system. You should be fine having two separate installations.


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I have the same model of Macbook which was showing the same issues. After replacing the Harddrive with an SSD I still had the same issue. It ended up being the SATA cable connecting the hard drive to the logic board. Over some time the insulation had started to wear off and the cable was occasionally shorting against the base of the case causing IO errors. ...


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I have the same MacBook Pro. I did the following: I bought a SSD and replaced the hard drive disk. I installed OS X on the SSD. (240 GB - $100). I inserted 8 GB of RAM (replace the two 2 GB RAM) ( 2 x 4 GB - $50). Then I replaced the SuperDrive with .... the old HDD. You need to buy an adapter. (Adapter on Amazon - $30). Yes it's expensive, but it takes ...


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You will diagnose that you have a serious disk problem by looking at /var/log/system.log and more specifically with: grep disk /var/log/system.log These error messages will clearly show if your disk is producing I/O error on the same location, which will indicate a disk problem, or on multiple locations which will indicate a bus or logic problem. I ...



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