I don't know that the Jaguar disk is a bootable disk. If you have another hard drive with a system installed, you can hold down the option key as the Mac boots and you will be able to select any bootable volumes (including mounted CD's). On Saturday, Aug 30, 2003, at 13:45 America/Los_Angeles, Jim Shimozawa wrote: > Could anyone tell me how to boot from a secondary drive? > (It has OS 10.2.6) > I messed up the user pref file in my main drive. > I pressed the 'C' key while trying to boot with my Jaguar disk (1 > of 2) without success. > Thanks