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I was having some trouble booting to windows, so I ran the steps on this thread https://discussions.apple.com/thread/4144252, and it fixed the issues booting to windows but now I am unable to boot to my OSX partition. when I try to boot to it or the recovery disk I get a circle with a slash through it. Any help anyone can give would be helpful
MacBook Pro (15-inch Mid 2012), Windows 7
Skwidkid88 wrote:
I live in Kansas, we dont have any
Yes you do, check for yourself. Start with Leawood.
cool! didnt know that, but its still a 3 hour drive, I will have to see what I can do
Long drive 😟
Have a good lunch on the way 🙂
I found burried in an old flash drive my windowssupport settings file from when I first configured bootcamp, and it has a remote mac installer so I'll give that a try and see if it works 🙂
While it is possible to configure Apple hardware to triple boot, it's non-obvious how to do it and has some fragility. The typical tools aren't going to create the hybrid MBR needed correctly because they don't know what must be in the MBR vs what doesn't need to be in it; most tools try to sync the MBR and GPT. And there's some evidence that the OS Installer and Disk Utility try to resync it, which further causes problems.
Merely booting linux should not cause a change either partition table. So I'm not sure what started all of this. But I suggest going back to that linux flash drive, getting to a terminal and issuing these commands:
su
fdisk -l /dev/sda
parted /dev/sda unit s print
smartctl -x /dev/sda
All of these are read-only commands, they don't change anything on the disk. fdisk will display MBR info, parted will display GPT info, smartctl will display drive SMART status and attributes which may be quite a bit of info. Copy-paste all of it into the forum, ideally formatted with the Andale Mono 8pt font.
The smartctl command may not work if smartmontools isn't on the linux live media. But if you have an internet connection, usually needs to be wired with linux since the wireless drivers are often not available by default on live media, you can install smartmontools.
If you have a working network connection while booted with the linux live media, you can copy-paste directly to the forum with a web browser. Otherwise you'll need to copy-paste from Terminal to Gedit, save a text file to a separate USB stick, and then reboot to OS X.
Cannot boot to OSX
