grav Posted February 13, 2007 Share Posted February 13, 2007 This is weird. I recently installed 10.4.6 on a machine with a 40 GIG harddrive. I had to do the following to get it to boot from harddrive w/o install dvd (got a b0 error): fdisk -e /dev/rdisk0 flag 1 write quit reboot ... and everything was a-okay. Then I decided to get a bigger harddrive, a 160 GB hd, same brand (Seagate). I formated the HD and made a HFS+ and two empty partitions and installed on the HFS+ partition. But now I don't get the b0 error, I simply get a blinking cursor. I can still boot up by inserting DVD and letting it time out. I've tried the fdisk-trick (above), but first it was unable to find /usr/standalone/i386/boot0. I then copied that file from the cd and did the fdisk-trick. This time it said it couldn't get access to the drive. I then booted from cd with -s option and did the fdisk trick. This time the partition is marked as active correctly, but I still can't boot - same old blinking cursor. What the devil is wrong? Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/ Share on other sites More sharing options...
sej111 Posted February 14, 2007 Share Posted February 14, 2007 Find the info to set your OSX partition to primary and active. It's in this forum. Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-302262 Share on other sites More sharing options...
CoffeyMachine Posted February 14, 2007 Share Posted February 14, 2007 I'm getting a b0 error when i try to boot from the HD, it will only boot into the install DVD then it tells me i need to restart. What is this fdisk thing you did? Can you explain how to do it? Are you typing that text into the darwin boot loader or something? Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-302394 Share on other sites More sharing options...
grav Posted February 14, 2007 Author Share Posted February 14, 2007 I'm getting a b0 error when i try to boot from the HD, it will only boot into the install DVD then it tells me i need to restart. What is this fdisk thing you did? Can you explain how to do it? Are you typing that text into the darwin boot loader or something? Go here: http://wiki.osx86project.org/wiki/index.php/B0_error Find the info to set your OSX partition to primary and active. It's in this forum. As I said, I've already tried this. Anyways, I solved the problem. The reason for the trouble was, that I had formatted the disk without using the GUID partition type which is apparently required for booting from an Intel Mac (without boot manager anyway). I reformatted the disk using the correct partition type and did the fdisk trick, and everything was ok. Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-302834 Share on other sites More sharing options...
ruedewiel Posted February 21, 2007 Share Posted February 21, 2007 (edited) Hi Grav, Good to hear you've found a solution, i have the same issues with booting. description of actions: 1: partitioned disk with DiskUtil (MBR option flagged) 2: erased all partition within DiskUtil (HFS+) 3: Restored current partition -> New partition 4: fdisk -e /dev/ etc. 5: Set Bios to boot new HDdisk 6: Needs InstallDVD to time-out (long sigh) I don't use a multibootloader, other than darwin and no OS is installed other than Apples' I followed one of the threads How to clone osx86 to a bigger disk to no avail. The solution you found was the way you formatted the disk, not MBR but GUID? Maybe you can share the topic you found which pointed you in the right direction. edit: I see, I might have misunderstood your posting: I had to format the disk WITHOUT GUID. well since I have done that, it is probably not the answer to the problem. Edited February 21, 2007 by ruedewiel Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-307986 Share on other sites More sharing options...
mifki Posted February 21, 2007 Share Posted February 21, 2007 u cant use guuid if u dont have a real mac, you need mbr Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-307993 Share on other sites More sharing options...
macphreak4evr Posted February 21, 2007 Share Posted February 21, 2007 I know its like the "blacklisted way" but I just used a Winblows boot disk and fdisk and set the active partition, it took like 2 mins max. Link to comment https://www.insanelymac.com/forum/topic/42290-will-only-boot-with-install-dvd/#findComment-308111 Share on other sites More sharing options...
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