sdelano Posted October 25, 2006 Share Posted October 25, 2006 Right now I can only boot into OSX from the install DVD. If I take the DVD out I get and Invalid Operating System! error. I figured this might have something to do with the mbr because yesterday I tried to install ubuntu, and it therefore installed GRUB on my HDD and ever since I have been unable to boot into OSX without the install DVD. I also tried this: This thread And I got a similar error about /usr/standalone/i386/boot0 What can i do to fix this? Thanks, Stephen Link to comment Share on other sites More sharing options...
Detosx Posted October 26, 2007 Share Posted October 26, 2007 Joys of Ubuntu - or insufficient fore-planning in the event of unseen disaster! Welcome to the world of... Yes, I had a similar error message at one point, though not for a few days now, and wonder if it might be a route cause. Well, I'm sure you know about all that. It's nothing if not an adventure in insanelymacland, with many kind fellow travelers. Almost every single time I hit a Darwin or Windows boot problem I am able to solve both with their respective install DVDs and a few commands, but not after Ubuntu, which caused me a number of very weird problems (version 7.10 is fairly compelling reason to switch to Linux). Like you, I am only able to boot off the DVD. I formatted the Linux partition as it was sandwitched between a Vista and OS X partition, then moved the OS X partition over to the left (I used gparted (be sure to unjournal your OS X partition first and remember to rejournal afterwards; the move worked faultlessly, though don't try to resize. I ran the fdisk -u /dev/rdisk0 command, wrote and flagged OS X as the active partition. All I get now is a blinking cursor line against a black background. Also, I have been unable to get Vista's bootloader, via BCD, to boot it. At present I boot up via the install DVD by pressing F8. That said, I wanted to try out Kalyway's 10.4.10. When installing it to another partition, I found it added my original partition to Darwin's boot list. As you can imagine, when I removed Kalyway it took Darwin with it. Any suggestions welcome! :-) Link to comment Share on other sites More sharing options...
Detosx Posted October 26, 2007 Share Posted October 26, 2007 Hi there, possibly this thread will help but based on the error message I suspect it's more complicated than that. http://www.insanelymac.com/lofiversion/index.php/t33216.html Link to comment Share on other sites More sharing options...
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