simpod Posted January 4, 2010 Share Posted January 4, 2010 Havin problems with my OSx86 install.. I have windows 7 installed on one partition and have installed mac osx86 on a second partition (Kalyway). Did the bippity boppity boop on the windows partition using Diskpart and made partition 1 the active partition. Thing is i seem to have 4 partitions showing in diskpart: Partition 1 = I assume is the windows installation or other system files? Partition 2 = Again windows but just my programs nd documents etc Partition 0 = I have no idea - assuming is the same as 3 Partition 3 = Should be the mac osx86 installation Problem? When i select the mac osx os from the bootloader (EasyBCD) it says: nst/nst_mac.mbr file is corrupt or missing. I've tried the chain0 method with no luck. Here is a detailed view of the EasyBCD config if needed: Windows Boot Manager -------------------- identifier {9dea862c-5cdd-4e70-acc1-f32b344d4795} device partition=\Device\HarddiskVolume1 path \bootmgr description Windows Boot Manager locale en-US inherit {7ea2e1ac-2e61-4728-aaa3-896d9d0a9f0e} default {899dfc69-bea9-11de-b7e5-89d6234cfa32} resumeobject {899dfc5f-bea9-11de-b7e5-89d6234cfa32} displayorder {899dfc65-bea9-11de-b7e5-89d6234cfa32} {899dfc69-bea9-11de-b7e5-89d6234cfa32} bootsequence {899dfc63-bea9-11de-b7e5-89d6234cfa32} toolsdisplayorder {b2721d73-1db4-4c62-bf78-c548a880142d} timeout 30 Real-mode Boot Sector --------------------- identifier {899dfc65-bea9-11de-b7e5-89d6234cfa32} device unknown path \NST\nst_mac.mbr description NST Mac OS X Windows Boot Loader ------------------- identifier {899dfc69-bea9-11de-b7e5-89d6234cfa32} device partition=C: path \Windows\system32\winload.exe description Windows 7 Home Premium (recovered) locale en-US recoverysequence {899dfc61-bea9-11de-b7e5-89d6234cfa32} recoveryenabled Yes osdevice partition=C: systemroot \Windows resumeobject {82073e13-f953-11de-9863-806e6f6e6963} Any help appreciated thanks Link to comment https://www.insanelymac.com/forum/topic/205721-osx-mbr-problem/ Share on other sites More sharing options...
seangibbz Posted January 5, 2010 Share Posted January 5, 2010 It looks like you set up your partition table incorrectly. MBR can either have: 1. Four primary partitions 2. Three primary partitions, with 1 extended partition which can hold an infinite number of logical partitions What you should want is to go into diskpart (or my personal favourite, GParted on an Ubuntu Live CD), delete your extended/logical partitions, and create an unformatted partition in their place. When you load up the OSX installation disc, go into Disk Utility and format the partition to Mac Jorunaled Extended; install OSX to that partition. Link to comment https://www.insanelymac.com/forum/topic/205721-osx-mbr-problem/#findComment-1376867 Share on other sites More sharing options...
simpod Posted January 5, 2010 Author Share Posted January 5, 2010 Thanks a lot I will try that now Fingers crossed Link to comment https://www.insanelymac.com/forum/topic/205721-osx-mbr-problem/#findComment-1377092 Share on other sites More sharing options...
simpod Posted January 5, 2010 Author Share Posted January 5, 2010 okz good and bad news The good news - i did what sdbinwiiexe suggested and it worked! yay next step was to get windows 7 working again sooo.. (bad news) Booted windows 7 disk, went into repair your computer etc, CMD, Diskpart and made partition 1 active. Rebooted and my laptop and the EasyBCD bootloader came up - the windows link worked fine, mac osx didnt (same problem as original). Booted into windows and into EasyBCD, deleted the Mac entry and put it in again. Still no luck - any suggestions? Link to comment https://www.insanelymac.com/forum/topic/205721-osx-mbr-problem/#findComment-1377162 Share on other sites More sharing options...
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