thegodfaza Posted September 12, 2007 Share Posted September 12, 2007 I accidentally overwrote my OS X MBR with the XP MBR. I have Vista and XP on HDD A and I have OS X on HDD B. When I rewrote the XP boot loader it overwrote the MBR on ALL my partitions on ALL drives. I now hate M$. Anyway can I rewrite the OS X bootloader on HDD B without having to do a reinstall of OS X. Link to comment https://www.insanelymac.com/forum/topic/63077-reinstall-os-x-mbr/ Share on other sites More sharing options...
urd Posted September 13, 2007 Share Posted September 13, 2007 I accidentally overwrote my OS X MBR with the XP MBR. I have Vista and XP on HDD A and I have OS X on HDD B. When I rewrote the XP boot loader it overwrote the MBR on ALL my partitions on ALL drives. I now hate M$. Anyway can I rewrite the OS X bootloader on HDD B without having to do a reinstall of OS X. Depending on the error you are receiving, if any, this might be helpful. Although I cant be sure. Before reinstalling it might be worth a try. I myself have used Acronis to set the OS X Partition (Shag OS) to Active (0xAF). http://forum.insanelymac.com/index.php?sho...1339&st=405 http://forum.insanelymac.com/index.php?showtopic=6351 Hope it helps. Link to comment https://www.insanelymac.com/forum/topic/63077-reinstall-os-x-mbr/#findComment-446996 Share on other sites More sharing options...
thegodfaza Posted September 13, 2007 Author Share Posted September 13, 2007 I don't have that problem. The partition is set active. I used fdisk under linux. Windows REALLY overwrote the MBR with it's own. When I do a custom boot to that drive I get: NTLDR IS MISSING PRESS ANY KEY TO RESTART Since OS X is not a Windows NT system it does not have an ntldr boot file. So I need an app that will rewrite the boot sectors to that partition. Link to comment https://www.insanelymac.com/forum/topic/63077-reinstall-os-x-mbr/#findComment-447128 Share on other sites More sharing options...
thegodfaza Posted September 14, 2007 Author Share Posted September 14, 2007 I reinstalled OS X so I don't need help anymore. Link to comment https://www.insanelymac.com/forum/topic/63077-reinstall-os-x-mbr/#findComment-447355 Share on other sites More sharing options...
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