Disk Utility can't repair disk..

[CGGuy]

Hi guys,
After I recently messed with the windows partition and deleted it manually. But now I lost control over my Mac Partition too. Now I cannot boot or repair the partition in any ways. When I try to fix it, I get the notification "Disk Utility can't repair this disk, Backup as many of your files as possible, reformat the disk and restore your back-up files".

I have tried different methods mut look like the apps cant touch the partition or something like that.

I somehow managed to install windows again, and can reach my files from it. They are in good shape and I can back-up now. But since I don't have much time, I am looking ways to repair the MacOs Partition and get back to work asap.

I believe there is something wrong with the MBR or something, because Disk Utility does not allow me to change anything and says it uses Master Boot Record.

Any ideas?
Thanks.

 

[harryb2448]

Did you use BootCamp for the Windows installation? If so, BootCamp has to be used to remove Windows and the partition revert back to unused space. May well have circumvented Disk Utility. Can you supply the operating system as a format and install may be looming.

 

[CGGuy]

Did you use BootCamp for the Windows installation? If so, BootCamp has to be used to remove Windows and the partition revert back to unused space. May well have circumvented Disk Utility. Can you supply the operating system as a format and install may be looming.

No I did not use Bootcamp for the installation. Unfortunately, I cannot reach the BootCamp assistan so I cannot try anything using it.

The other interesting thing is, Disk Utility on the Recory mode could not see the Bootcamp partition but Windows could see it easily with the installer. I wonder if there is a software on Windows to fix this MBR-GTR problem.

Thanks

 

[CGGuy]

Here is what I have on Recovery Disk Utility..

 

[chscag]

I believe there is something wrong with the MBR or something, because Disk Utility does not allow me to change anything and says it uses Master Boot Record.

That's correct. Your OS X partition should not be schemed as MBR but rather it should have been setup as GUID. Now you're stuck and it also appears your Yosemite partition is damaged. You're only solution now is to erase the entire disk, partition it correctly, format it and then recover what you can from backups.