nubuki Posted March 21, 2007 Share Posted March 21, 2007 Hi, Made a search in forum, but nothing help. Sorry for bringing up another booting problem, I'm a macos noob so please help. I have a 200gig external drive. It has 3 partitions, the first one is for macos and the other are used as storage. If I partition this drive during setup with disk utility, there are no problems. System boots very fine from USB disk. But if I reinstall Macos by erasing that partition with disk utility(or without erasing), It won't boot up anymore, stays on a screen with the :censored2: blinking cursor. The only way to make it boot again is repartition the drive by erasing everything on disk with disk utility and reinstall, which I cannot do at the moment. I've tried to set the partition active, I use the install dvd, go to terminal, unmount the drive, mark it as active with fdisk, and reboot but nothing changes. I copy an other macos partition from my internal drive to external with superduper, the situation is the same, it won't boot. I can boot with the DVD by specifying the correct drive to boot but it gives an error on the startup gray screen(the same happens for my working macos partition, if I boot with dvd it gives an error, if it boots by itself, there are no problems). So I think there is something simple missing. Any suggestions? Thanks! Link to comment https://www.insanelymac.com/forum/topic/46008-another-usb-boot-problem/ Share on other sites More sharing options...
tuxuser33 Posted March 22, 2007 Share Posted March 22, 2007 rewrite boot code http://forum.insanelymac.com/index.php?sho...mp;#entry329098 goto post 4 Link to comment https://www.insanelymac.com/forum/topic/46008-another-usb-boot-problem/#findComment-329441 Share on other sites More sharing options...
nubuki Posted March 22, 2007 Author Share Posted March 22, 2007 Thanks, but I did that, several times. Does not help. That looks like the most logical way of solving that issue but unfortunately it does not work. I successfully write the mbr code. But end up with a blinking cursor again. Link to comment https://www.insanelymac.com/forum/topic/46008-another-usb-boot-problem/#findComment-329619 Share on other sites More sharing options...
nubuki Posted March 27, 2007 Author Share Posted March 27, 2007 No other clues? I'm really stuck... Link to comment https://www.insanelymac.com/forum/topic/46008-another-usb-boot-problem/#findComment-333500 Share on other sites More sharing options...
sidha Posted October 22, 2007 Share Posted October 22, 2007 Yes. This is because the newer Disk Utilitys can't make correct mbr. Only the old one (osx pre 10.4.3) can make a correct mbr. The good one is on the install dvd. Disk Utility with version number 10.5.4 is correct. (on the partition option screen it has only 2 option: "apple" and "pc" - choose pc) The new one has 3 options, but even the mbr option is wrong!!! So, copy the disk utility from the dvd (with version number 10.5.4) and its fine. sorry about my english sidha Link to comment https://www.insanelymac.com/forum/topic/46008-another-usb-boot-problem/#findComment-477275 Share on other sites More sharing options...
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