mks2000 Posted August 14, 2007 Share Posted August 14, 2007 I have the following problem, hoping that anyone knows some hints for a solution: Running 2 Partitions on a Harddrive, XP is on 1st primary active, OS X is on the 2nd primary partition. I can boot into XP directly, but not into OS X. Tried chain0-Method etc. I already had it running with Acronis OS Selector. But after some OS X reinstalls, playing around etc. etc., Acronis didn't find the OS Partition anymore. It only showed the XP Partition as bootopti n. So I removed the Acronis and tried it with the chain0 and XP bootloader option. But XP bootloader won't show up (although everything seems to be in place, nftsldr etc. is where it should be). I think XP bootloader doesnt show up if it only finds one bootable partition at all? Acronis OS Selector won't find any operating system except for XP. Note that I can boot from DVD into the installed OS X using rd=disk0s2, everything working fine then, but it won't boot directly from Harddisk. I think the Bootsector of the OSX partition is {censored}ed up? Is this possible, since OS X starts up anyways, but only when using install DVD and then rd=disk0s2 ? How could I restore a correct Bootsector to the OSX partition, without going through a complete reinstall of the system? How can I install the Darwin bootloader. (I already searched the Forum, already tried around a lot, but couldnt find any answer that fits?) I already tried to dd the chain0 file to the OS X partition, but maybe I didnt do this correctly. Can anyone help, I would sincerely appreciate it! Link to comment https://www.insanelymac.com/forum/topic/60027-messing-with-the-bootsector/ Share on other sites More sharing options...
Sapam Posted August 14, 2007 Share Posted August 14, 2007 Try: http://wiki.osx86project.org/wiki/index.php/Simple_Dual_Boot make sure you format the 2nd Primary partition with FAT32 in windows. Also the 2nd Primary partition's starting point should lie within 1024 cylinder. ( am not sure if this issue is still relevant ). The easiest way to make sure that your OSX partition starts within 1024 cylinder is to make the 1st partition smaller maybe around 10-20 GB for a 80GB HDD and not more than that. There is a better way to calculate... i just can't remember now. Then later during the install follow the fdisk method to flag the mac partition active (follow the link i gave above). Darwin will take care of the rest Good Luck Friend!!! Link to comment https://www.insanelymac.com/forum/topic/60027-messing-with-the-bootsector/#findComment-427036 Share on other sites More sharing options...
mks2000 Posted August 14, 2007 Author Share Posted August 14, 2007 Try:http://wiki.osx86project.org/wiki/index.php/Simple_Dual_Boot make sure you format the 2nd Primary partition with FAT32 in windows. Thanks for the help. This community here rules! So I have to reformat and do the install again? Well okay, if it has to be.. Link to comment https://www.insanelymac.com/forum/topic/60027-messing-with-the-bootsector/#findComment-427037 Share on other sites More sharing options...
mks2000 Posted August 14, 2007 Author Share Posted August 14, 2007 Try:http://wiki.osx86project.org/wiki/index.php/Simple_Dual_Boot make sure you format the 2nd Primary partition with FAT32 in windows. thanks again! i did what you said and it worked out! still don't really know what the problem was, but it works now... Link to comment https://www.insanelymac.com/forum/topic/60027-messing-with-the-bootsector/#findComment-427245 Share on other sites More sharing options...
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