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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
I would imagine you can use parted magic which includes gdisk
OK you didn't include the results from the commands I asked for so I have no idea how to help you.
I dont know if I can remeber them off the top of my head, but I will try my best to remeber, there is no way that I can access them right now as I am stuck on windows, started with sudo gdisk /dev/disk0, and got the found valid GTP with something MBR (was not proactive, I think it was hybrid but I am not 100% sure) entered r <enter>, then h <enter> and it asked for the number from 1 to 3 of the partition, I entered 5 because windows is the 5th partition, then entered Y for all the commands and then did w <enter>
What version of OS X? What happens when you boot with the option key: you see Windows as an option, and what else? Do you have OS X install media (DVD or USB stick) handy or is it easier to download a linux live CD and copy it to a USB stick, or burn it to CD/DVD media?
I had the latest version of OSX, and when I boot up with alt I have the options of rEFIt, windows, and recovery HD, and under rEFIt I have the options of mac, windows, and recovery disk, and my mac did not have a install CD with it and the recovery download at start (command r) and recovery disk do not work, and recovery disk does not work, I do have a few lightweight linux flash drives I can use for terminal if thats what you need me to do
Boot from Recovery HD, get the output from fdisk and gpt, then take a photo and post it somewhere. Helps to read the whole thing. So Recovery HD is a boot option but when you choose it, what happens?
I get a screen that looks like this,
just an observation, it looks like the boot sequence is fine, but I think the files and such got wiped, I was checking disk management and I have my windows partition and a "Healthy (GTP Protective Partition)" where mac used to be but it does not recognise it as the mac partition. If it is still somehow recoverable let me know, and if not, would I be able to use a OSX Snow Leopard disk for iMac to install mac? My macbook pro did not come with an installation disk but my parents iMac did
What version of OSX came with your MBP?
It came with lion, mountain lion came out shortly after
I don't recomend using a Snow Leopard disc, and if the one that you are speaking of is the Grey disc (the one that came with the iMac) it won't work at all.
Have you tried internet recovery? (command-option-R)
yes, Internet recovery does not work
Take it to an Apple Store.
I live in Kansas, we dont have any
just an observation, it looks like the boot sequence is fine, but I think the files and such got wiped
?? What do you mean by "the boot sequence is fine"? You said OS X doesn't boot, and you can't boot from Recovery HD. That's not fine. System files and user files are both just files, so for system files to be OK and user files to be "wiped" is something done by the user only.
If it is still somehow recoverable let me know
Since I have no idea what state the computer was in before, what actions you took, and what state it's in now, I can't even begin to tell you anything useful. I really do need to see the results from fdisk and gpt, or from gdisk (recovery menu, results from option o and option p), I'm not making this up. Use a working Mac to download
would I be able to use a OSX Snow Leopard disk for iMac to install mac
It likely won't boot a computer that came with a newer version. I'm not suggesting you reinstall yet anyway. You need to find out if the partition tables are correct, and then see if the file system is intact. If not then you'll need to use testdisk to find the true start/end point of the the OS X partitions. But it's not possible to say why you're having this problem without knowing exactly what you did.
I had a 325 Gb OSX partition, a 50 Gb linux mint partition, and a 325 Gb windows partition, now I have a 375 Gb "Healthy (GTP Protective Partition)", and I'm really sorry, I cant remeber in more detail than I already told you what exactly I did with the gtp and fdisk, I could go onto a linux flash drive and use those tools to find information, but those flash drives r the reason windows had a wierd blip so I would prefer to not have to use those (I booted to the linux flash drive and didnt install anything and when I tryed to go back to windows thats when it could not boot and the origional reason I was messing with gtp and fdisk stuff) I'm really sorry though that I can't provide more information about the gtp and fdisk though.
Cannot boot to OSX
