exadeath Posted December 23, 2006 Share Posted December 23, 2006 I was having difficulties with my macbook and hibernation, it wouldn't rewake correctly. Someone recommended running diskwarrior on it which cleared that problem right up. After playing around with the app on my macbook, I thought I'd give it a try on my hackintosh. Diskwarrior happily examined my disk, and reported a "Bad Boot Block" condition, without hesitation I told it to repair it. - bad idea. I can boot from the install DVD, but I get nothing but a blinking cursor in the upper left when trying to boot from the HD. Much like this: not booting without DVD My guess is that is that Diskwarrior removed the MBR in such a way that blessing/fdisking the drive no longer works. I've tried "fdisk -u" and "bless -bootinfo"/"bless -setBoot" commands from the hard drive, a 10.4.8 and 10.4.7 install discs. Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/ Share on other sites More sharing options...
Rammjet Posted December 23, 2006 Share Posted December 23, 2006 You are correct that it majorly changed your MBR and your only recourse is to reformat and reinstall. And I reported on the boot block problem back in the DiskWarrior thread: http://forum.insanelymac.com/index.php?s=&...st&p=249651 Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-260333 Share on other sites More sharing options...
BuXb Posted August 1, 2007 Share Posted August 1, 2007 So has someone in the meantime conjured up a way to repair the boot entry after one has run DW over a booting volume .. ? I did this yesterday on one of my external boot volumes which was corrupted because I did not know about this issue, and have not been able to get it back up running. I could restore the drive with Norton Ghost, no problem, but it would come in more handy to do it from the Macintosh side. Any hackint0sh solution would be greatly appreciated Cheers, Bugs Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-418606 Share on other sites More sharing options...
glitchman Posted September 28, 2007 Share Posted September 28, 2007 so how do i restore the mbr? i have the same problem Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-458585 Share on other sites More sharing options...
~pcwiz Posted September 29, 2007 Share Posted September 29, 2007 I remember there was some command to install the bootloader. Something like fsck -u /dev1ds1. Don't remember the exact command. Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-458835 Share on other sites More sharing options...
mitch_de Posted September 29, 2007 Share Posted September 29, 2007 THis , DW, Warning would be good to be sticky. DW didnt hurt the OS X files itself but makes our OS X86 unbootable. I use, Diskutil (repair) or TechtoolPro (HW check. HD checks). Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-458869 Share on other sites More sharing options...
~pcwiz Posted September 29, 2007 Share Posted September 29, 2007 OK I remember the exact command (I'm quite sure this is it) to install the bootloader into the MBR fsck -u /dev1s1 Replace dev1s1 with your hard drive ID Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-459270 Share on other sites More sharing options...
Headrush69 Posted September 29, 2007 Share Posted September 29, 2007 OK I remember the exact command (I'm quite sure this is it) to install the bootloader into the MBR fsck -u /dev1s1 Replace dev1s1 with your hard drive ID Its fdisk, not fsck. (Didn't the OP mention this tool in the beginning ) Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-459314 Share on other sites More sharing options...
~pcwiz Posted September 29, 2007 Share Posted September 29, 2007 Thanks Headrush. Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-459323 Share on other sites More sharing options...
politicosx86 Posted June 28, 2008 Share Posted June 28, 2008 Its fdisk, not fsck. (Didn't the OP mention this tool in the beginning ) Actually, I think the command would be fdisk -u /dev/disk1s1, where 1s1 is your drive and partition number. Link to comment https://www.insanelymac.com/forum/topic/36590-diskwarrior-warning/#findComment-799164 Share on other sites More sharing options...
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