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All replies
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Helpful answers
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Oct 19, 2014 7:06 AM in response to LokoMixby Loner T,I suggest a erase/restore from a good pre-Yosemite backup. I suggest putting Yosemite on the back-burner.
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Oct 19, 2014 7:10 AM in response to LokoMixby Loner T,Do you have backup before the Yosemite upgrade?
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Oct 19, 2014 7:25 AM in response to Loner Tby LokoMix,THank you so much. at this point im very happy that you help me get back 30+ GB that i didnt know i have.
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Oct 19, 2014 7:35 AM in response to LokoMixby Loner T,★HelpfulYou need to use Internet Recovery (Command+Opt+R) and start from a clean install of OS. Since you updated via App Store, you may get Yosemite back when you re-install.
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Oct 19, 2014 7:40 AM in response to Loner Tby LokoMix,After that I can go back to my time machine and pick out program/files that I need right ?
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Oct 19, 2014 8:14 AM in response to LokoMixby Loner T,Do not use a Restore the full TM backup, but use the Migration Assistant and pick what you want restored.
Please see OS X Mavericks: Transfer your info from a computer or disk.
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Oct 20, 2014 10:30 AM in response to JC K9by Loner T,Please start a new thread and post a reference back here. Your NTFS header being intact is good, but missing GPT#1 is a bit surprising. 34-409606 rather than 40-40960 is puzzling.
Please post the output of sudo fdisk /dev/disk0 in the new thread as well.
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Oct 20, 2014 10:38 AM in response to Loner Tby JC K9,Ok thanks. I started a new thread with the additional info but how do I reference to this one
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Nov 6, 2014 12:50 PM in response to LokoMixby brosello,I just tried to install Boot Camp on a MAC running Yosemite. I installed it as a test to see if I could get it running with Windows 7. I was able to install it fine but then received the same error message shown in this post, "Missing Operating System -- No Boot device ...". I was able to fix it by inserting my Yosemite boot USB drive. I then pressed the Alt key so that I could see the boot device menu. I selected the USB drive as if to install Yosemite but went into Disk Utility. I ran a "Verify Disk" on the Mac Hard Drive (Not the Boot Camp Drive) then, even though it found no errors on the drive, a "Repair Disk" on the drive.
Once I did that I inserted my Boot Camp USB drive, pressed the ALT button and powered on the MAC. When I did this I once again saw the MAC Hard Drive and the Windows Hard drive option. I selected Windows and the installation of Windows continued. All said and done my MAC booted into Windows without failure, I then rebooted selecting the ALT option and selected the MAC Hard Drive, went into System Preferences - Startup and selected the MAC drive so that it always boots to MAC first. I hope this helps anyone who has a similar issue.
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Nov 6, 2014 12:54 PM in response to broselloby Loner T,Usually a Verify (and Repair) is recommended before a BC/Windows installation. Excellent tip, thanks.









