KJ4860 Posted August 30, 2008 Share Posted August 30, 2008 Hi, my question may be dumb and simply answered but anyways, here it goes: OS X running perfect on internal hdd(for now). I have an external with 3 partitions: 1.OS X Test (for updates/changes/etc.) 2.Time Machine Backups 3.Random junk I recently re-installed OS X onto the 1st partition with some different selections in kernels/drivers etc. and i want to simply boot it and test it. When i restart the pc, i change the boot to external usb hdd...no good. It appears to not be booting from the 1st partition (the only bootable one) as it has a blinking icon. I went back into my internal OS X and I tried a sudo cmd to make a boot menu before OS X loads...no help(as i expected). All i want to do is be able to go back and fourth for test purposes. Any help? Link to comment https://www.insanelymac.com/forum/topic/123520-how-do-i-boot-an-external-test-drive-from-os-x/ Share on other sites More sharing options...
MacNutty Posted August 30, 2008 Share Posted August 30, 2008 You need to install it on external drive or use Carbon Copy Cloner to clone it. Link to comment https://www.insanelymac.com/forum/topic/123520-how-do-i-boot-an-external-test-drive-from-os-x/#findComment-873616 Share on other sites More sharing options...
KJ4860 Posted August 30, 2008 Author Share Posted August 30, 2008 I did install it on the external. I reinserted the iatkos disc and fully installed it on the 1st partition with a different selection of drivers/kernels ( i did this install twice now). I have reason to believe that the 1st partition is not what the bios is attempting to boot from when i change the boot secquence to usb hdd. I guess the real question is how do i get the bios to boot from the 1st partition as opposed to the other 2 non-bootable ones? Link to comment https://www.insanelymac.com/forum/topic/123520-how-do-i-boot-an-external-test-drive-from-os-x/#findComment-873884 Share on other sites More sharing options...
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