Detosx Posted October 23, 2007 Share Posted October 23, 2007 Hi there! I read after the event that installing Linux to an extended partition sandwitched between two Primary ones - in this case sandwitched between Vista and OS X - would make for problems and it did. Even though I subsequently formatted said partition and turned it back to a Primary one, my OS X partition now reads as a Linux partition with the designation Ox83, where it's supposed to be 0xAF. Indeed I can even enter the OS X partition via Linux (now installed on that central Primary partition) but not enter OS X User folders because I don't have privillages (is there a way to do that as a last resort?); whereas if I boot up OS X via install JAS's OS X DVD, Disk Utility doesn't recognise the OS X partition as anything ofther than Linux! Said partition is recognised by all partition editors as still being Primary but with the 0x83 designation. I saw on BCD's forum that you should use a partition editor to convert 0x83 to 0xAF but no one says which partition editor to use - Acronis Disk Manager doesn't do offer that fascility and neither does Gparted. Possibly Partition Magic? Any suggestions very, very, very welcome! Link to comment https://www.insanelymac.com/forum/topic/67422-how-do-i-convert-a-misflagged-0x83-partition-back-to-0xaf/ Share on other sites More sharing options...
dasepsilon Posted October 23, 2007 Share Posted October 23, 2007 how about: boot into ubuntu open a terminal, type "sudo su" and then use "fdisk", namely type "fdisk /dev/hda" if you're on a pata, disk 1 or "fdisk /dev/sda" (or simply try hdb, sdb, hdc...) then type a single 'p' (and enter) to get infos about your harddrive. if it is the correct one, type 't', the number of the partition and af. type 'w' to write and quit. reboot. voila. Link to comment https://www.insanelymac.com/forum/topic/67422-how-do-i-convert-a-misflagged-0x83-partition-back-to-0xaf/#findComment-479054 Share on other sites More sharing options...
Detosx Posted October 23, 2007 Author Share Posted October 23, 2007 how about: boot into ubuntu open a terminal,type "sudo su" and then use "fdisk", namely type "fdisk /dev/hda" if you're on a pata, disk 1 or "fdisk /dev/sda" (or simply try hdb, sdb, hdc...) then type a single 'p' (and enter) to get infos about your harddrive. if it is the correct one, type 't', the number of the partition and af. type 'w' to write and quit. reboot. voila. Hi there! Thanks for that dasepsilon! Hope at last! For some reason, post BCD, Linux won't start up! Good grief. Thankfully it's quick to reinstall. Ideally I would unjournal the OS X partition and move it along with gparted so I could have Linux as the last (primary) partition but... at the moment it's not even recognised as being an OS X partition beyond that gparted tells me it's still hfs+ I will give it a try and report back a little later. By the way, it's Sata, a HP laptop. Thanks Link to comment https://www.insanelymac.com/forum/topic/67422-how-do-i-convert-a-misflagged-0x83-partition-back-to-0xaf/#findComment-479114 Share on other sites More sharing options...
Detosx Posted October 24, 2007 Author Share Posted October 24, 2007 Excellent! Thank you again dasepsilon! I can't get the grub loader to work the hfs+ partition though I have added it. I booted up from my OS X partition successfully through the rather long winded way of using the OS X install DVD, loading up and then restarting with the option of my OS X startup folder or the DVD startup. So good to see the former back in existence. Now, if I can just figure out how to repair the mbr, or what have you. I thought I had nailed it with an ubuntu tutorial on how to add operating systems but no joy! Any thoughts further thoughts welcome I hope this ultimately helps others. Link to comment https://www.insanelymac.com/forum/topic/67422-how-do-i-convert-a-misflagged-0x83-partition-back-to-0xaf/#findComment-479452 Share on other sites More sharing options...
dasepsilon Posted October 24, 2007 Share Posted October 24, 2007 if you post your grub menu, i suppose someone can help you. mainly you need the following lines rootnoverify (hdX,Y) chainloader +1 makeactive boot its very important that you use rootnoverify (and not root) and use makeactive. give it a shot. Link to comment https://www.insanelymac.com/forum/topic/67422-how-do-i-convert-a-misflagged-0x83-partition-back-to-0xaf/#findComment-480241 Share on other sites More sharing options...
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