clemsonpablo Posted December 5, 2007 Share Posted December 5, 2007 So, I've been working on installing Mac OSX Tiger on an external hard drive, first time. installed fine, had to go back into windows and make it an active partition. Well, over the course of trying to do something things, I had to keep erasing and re-installing Tiger, and it all went off without a hitch. Then I decided to split the hard drive into 2 partitions I could just back up an image every time I changed something that worked. Anyways, through the course of trying to do that, I got to the point where I couldn't boot to that hard drive anymore, even if i made just one partition for the whole thing and installed OSX on it. I've tried reformatting to FAT32 first in Windows on Partition Magic 8, and setting that partition active, but when I come back in, it identifies all of the space as unallocated, even though Mac OSX was installed on a Journaled Format, and Disk Utility shows no errors on the drive. So, in summary, Mac OS is happy with the install and recognizes it and what not, but won't boot to the drive...and windows recognizes the space as unallocated instead of AF like before. This leads me to believe I have messed something like the MBR up on this external drive. Any help would be appreciated! Link to comment https://www.insanelymac.com/forum/topic/74845-think-i-destroyed-my-mbr-or-something/ Share on other sites More sharing options...
BeeMeR Posted December 5, 2007 Share Posted December 5, 2007 So, I've been working on installing Mac OSX Tiger on an external hard drive, first time. installed fine, had to go back into windows and make it an active partition. Well, over the course of trying to do something things, I had to keep erasing and re-installing Tiger, and it all went off without a hitch. Then I decided to split the hard drive into 2 partitions I could just back up an image every time I changed something that worked. Anyways, through the course of trying to do that, I got to the point where I couldn't boot to that hard drive anymore, even if i made just one partition for the whole thing and installed OSX on it. I've tried reformatting to FAT32 first in Windows on Partition Magic 8, and setting that partition active, but when I come back in, it identifies all of the space as unallocated, even though Mac OSX was installed on a Journaled Format, and Disk Utility shows no errors on the drive. So, in summary, Mac OS is happy with the install and recognizes it and what not, but won't boot to the drive...and windows recognizes the space as unallocated instead of AF like before. This leads me to believe I have messed something like the MBR up on this external drive. Any help would be appreciated! I had that problem once doing what you are doing. I fixed it with a cd floating in the net called HIRES 8.9 (OR BETTER) it has a lot of utilities for HD and MBR. BeeMeR Link to comment https://www.insanelymac.com/forum/topic/74845-think-i-destroyed-my-mbr-or-something/#findComment-528615 Share on other sites More sharing options...
Frek Posted December 5, 2007 Share Posted December 5, 2007 I had that problem once doing what you are doing. I fixed it with a cd floating in the net called HIRES 8.9 (OR BETTER) it has a lot of utilities for HD and MBR. BeeMeR It's actually "Hirens" or "Hiren's" utility CD. Quite useful for disk recovery. Link to comment https://www.insanelymac.com/forum/topic/74845-think-i-destroyed-my-mbr-or-something/#findComment-529056 Share on other sites More sharing options...
Rufus T. Firefly Posted December 5, 2007 Share Posted December 5, 2007 try from terminal fdisk -u /dev/rdiskXsX Link to comment https://www.insanelymac.com/forum/topic/74845-think-i-destroyed-my-mbr-or-something/#findComment-529234 Share on other sites More sharing options...
Recommended Posts