darkvador Posted February 19, 2006 Share Posted February 19, 2006 Hi everyone, I just installed osX on a spare hard drive that I happened to have (laptop hard drive in an external usb enclosure). The problem is that I simply can not get it to boot as an external drive. I know osX works because when I replaced my internal hard drive with the one in which os X is installed, it booted perfectly. So here's the deal; could anyone help me to get it working as an external hard drive? I have win XP and ubuntu in my laptop hard drive (double booting with grub), what do I have to add to grub to boot osX from the external hard drive? (/dev/sdb in linux)? I also tried changing the boot order in the bios but that doesn't seem to work, it either booted the internal hard drive (grub) or told me "ntlfs missing" (or something like that). Thanks in advance. Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/ Share on other sites More sharing options...
jrrjrr Posted February 19, 2006 Share Posted February 19, 2006 It is going to be something like: title MacOS X rootnoverify (sd1,0) chainloader +1 I think "/dev/sdb" translates into "sd1" (second sd drive) in grub terms, and the "0" after the "," would indicate the first partition. Grub counts things starting from 0, not from 1. I have never tried booting off my USB drive, but this would be the way I would tell grub to try it. Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/#findComment-58333 Share on other sites More sharing options...
darkvador Posted February 19, 2006 Author Share Posted February 19, 2006 Well, in fact when entering the command rootnoverify, grub proposes possible completions, and there is no sd0 nor sd1, there is only hd0 and fd0, fd1, ... ,fd7 I don't think that it's proposing me any of my external hds Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/#findComment-58356 Share on other sites More sharing options...
kikos Posted February 19, 2006 Share Posted February 19, 2006 Does your laptop support booting from USB harddrives? If you're not sure check the manual or your bios Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/#findComment-58365 Share on other sites More sharing options...
darkvador Posted February 19, 2006 Author Share Posted February 19, 2006 My laptop is an IBM T42p I think it supports booting from usb drives as it proposes them on the bios configuration, but I'm not 100% sure. I tried installing Acronis boot manager but it doesn't propose booting from external drives Now I have no grub, and I still can't boot from my external hd Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/#findComment-58426 Share on other sites More sharing options...
flow Posted March 23, 2006 Share Posted March 23, 2006 I can boot it with the help of GRUB installed on the HD http://forum.osx86project.org/index.php?showtopic=12833 what I really want is to put the grub on the this external USB drive, so I can put this drive if I put it in other machines Link to comment https://www.insanelymac.com/forum/topic/9370-booting-from-an-external-usb-hd/#findComment-81518 Share on other sites More sharing options...
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