Romano2K Posted August 20, 2012 Share Posted August 20, 2012 Hi there! Now that Windows 8 RTM is available to developers or IT journalistes (which I am), I'm trying to install a Mountain Lion / Windows 8 dual boot on a spare drive, before doing it on my main hard drive. Here is what I did to get it nearly working: As Windows 8 is modern and should support GUID partition tables (also known as GPT) without messing with hybrid GPT/MBR partitions, but because I wasn't sure it would create such one instead of a MBR partition table, I first booted on a myHack Mountain Lion installation USB disk to partition the drive. Using Disk Utility, I created two partitions, the first in HFS+, the second in FAT32, with a GUID partition table. But instead of lauching the installation right away, I shut down my computer and booted again with a Windows 8 installation disk. Once in front of the installer, I re-formated the FAT32 partition in NTFS and installed Windows 8. It rebooted fine. Then I booted again with the Mountain Lion USB disk and installed it on the previously created HFS+ partition. It went fine. But there's something wrong: On boot, it displays "boot0: Done" for one second then loads Windows 8, instead of displaying the Chameleon |Â myHack bootloader. If I boot on a myHack USB disk, I can choose the Mountain Lion partition and it boots. How can I get rid of the USB disk and fix Chameleon on my hard drive ? Thanks in advance! Link to comment Share on other sites More sharing options...
Romano2K Posted November 1, 2012 Author Share Posted November 1, 2012 I finally took the opportunity of the Windows 8 launch to polish my dual boot installation. The only thing I had to do to be able to choose OS X or Windows 8 at boot was to boot once using a myHack USB disk, then manually reinstall Chameleon on the harddrive. After that I get Chameleon on boot and both OS X and Windows 8 boot fine from there. But, unfortunately, first automatic updates of Windows 8 broke everything. After running Windows 8 for some time, it downloaded updates automatically (which is something I'd like to keep enabled) and installed them during the next shut down. Windows 8 still starts its boot sequence, but displays an error message which would be translated to something like: "Windows updates configuration failed. Restoring changes. Don't shutdown the computer." After sometime the computer reboots and if I choose Windows 8 again, it does this indefinitely. Any idea what's wrong? And how to fix it? I already tried to reinstall Windows 8, as there wasn't anything essential installed or stored, but the same happened again. Link to comment Share on other sites More sharing options...
Romano2K Posted January 17, 2013 Author Share Posted January 17, 2013 Any news about Windows 8 / OS X Mountain Lion cohabitation on the same drive? I haven't found any fix since I wrote this topic, but maybe someone has found how to do it since? Link to comment Share on other sites More sharing options...
Mac Hosehead Posted January 18, 2013 Share Posted January 18, 2013 I once had a laptop that I setup for dual boot just the way you did. It wasn't too hard to do and it worked fine for a while. Then for some reason I couldn't explain, the partition table for Windows became corrupt and I lost everything on that side. This somewhat soured my attitude towards dual booting. If I was using a desktop and wanted a dual boot I would just use two hard drives and be done with it. -MH Link to comment Share on other sites More sharing options...
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