gedna Posted February 19, 2015 Share Posted February 19, 2015 Hello all The story: I have running 10.6.8 system on my guid hard drive,on partition 1 other partition in this hard drive is empty so i thought i will give yosemite a try, but i have also win8 on another hard drive witch is on mbr, after installing yosemite on second partition i can no longer boot win8 , error boot/bcd 0xc000000f I have tried many things to fix this using win8 usb installation media, tried to /rebuildBcd but with no luck can you help me? BTW that hidden win8 boot volume (200mb) is on guid hard drive so its efi I hope you understood my problem here Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/ Share on other sites More sharing options...
WaldMeister Posted February 19, 2015 Share Posted February 19, 2015 Hi, Which installation method did you use? And which boot loader did you install? Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2113170 Share on other sites More sharing options...
gedna Posted February 19, 2015 Author Share Posted February 19, 2015 Hello i used Yosemite zone 10.10 and it installed chameleon Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2113171 Share on other sites More sharing options...
WaldMeister Posted February 19, 2015 Share Posted February 19, 2015 My initial thought is that the OSX partition has been marked active instead of the Windows uefi partition. Read this tutorial on how to revert this: http://www.insanelymac.com/forum/topic/22844-how-to-setting-your-partition-active-using-fdisk-in-macosx/ After setting the Windows uefi partition active, you will not be able to boot in to OSX, so i would suggest installing Clover boot loader. Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2113172 Share on other sites More sharing options...
gedna Posted February 19, 2015 Author Share Posted February 19, 2015 Thank you for your quick response! i have tried clover but after installing it 2.3k version screen just goes black... maybe i have to select some stuff before installing it, any way, i will try your link now Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2113174 Share on other sites More sharing options...
gedna Posted February 20, 2015 Author Share Posted February 20, 2015 sadly you suggestion didnt worked any more thoughts? Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2113267 Share on other sites More sharing options...
sebus Posted February 28, 2015 Share Posted February 28, 2015 Yosemite messed Win8 And I thought it was Microsoft that messed Win8... Link to comment https://www.insanelymac.com/forum/topic/304638-yosemite-messed-win8/#findComment-2116253 Share on other sites More sharing options...
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