So you do have full OSes and installs of the OS on the multi-session CD? FYI: A multi-session CD should not interfere with the ability of one of the partitions to boot! I suggest you do the following if you have no already tried this: 1. Insert the multi-session CD which contains your OS 9 and OS 9.2.2 sessions (is 9.2.2 a real installer or is it an upgrade?). 2. Open System Preferences:Startup Disk 3. If the CD appears as a bootable disk, select it. If the above does not work, you might be able to extract the session from the multisession CD and burn it to CD, PROVIDED the OS 9 or OS 9.2.2 session you copy contains a System Folder!!!! 1. Open Disk Utility 2. Insert multisession CD 3. Select the appropriate session of the CD and make a disk image out of it. 4. Save the disk image to your HD. 5. (if you have Toast) Open Toast and burn the iso to disk (likely you'll have to select 'copy' disk or something to that effect -- you DO NOT want to burn the FILE to a disk. You want to burn the IMAGE to the disk). Select the 'bootable' option. 5. (if you lack Toast) Stay in Disk Utility. 6. Burn the newly created ISO to a new CD. (don't know if there's an option to create bootable CDs in Disk Utility) Next thought... All right, lets start from the beginning: 1. Why do you want to "reformat" (you're actually erasing it... reformatting is technically a different operation) your "OS 9 partition"? 2. Is it a real partition, SEPARATE from your OS X partition? If the answer to 2 is YES then all you have to do is ERASE the disk from OS X's Disk Utility application. But, I still question why you're doing this. If you plan to install Mac OS 9 MAKE SURE THAT YOU CAN BOOT INTO OS 9 BEFORE YOU REFORMAT THE PARTITION!!! Eric. On 10/06/06, Leith Peterson <leithriver7@xxxxxxxxxxxxx> wrote: > Yes, it is a dual boot, Eric. I'll check into formatting the drive from OS > 10. > > I couldn't find a startup disk on the 9.2.2 CD. It includes OS 7 and > 8, as well as 9. > > I have an external CD burner with the G4. > > Thanks, > > Leith > > >s your G4 a dual-boot? If so, then you can format the drive from OS X. > > > >Have you tried the following: > > > >Insert the CD with 9.2.2 on it. > >Open Startup Disk. > >Select the CD if it appears. > >Restart the computer. > > > >Does your G4 come with a CD burner? > > > >On 09/06/06, Leith Peterson <leithriver7@xxxxxxxxxxxxx> wrote: > >> Does any one have a bootable version of Mac OS 9 they're not using > >> for my used G4 (Power PC 7400) for sale or giving away? > >> > >> I have Mac OS 9, but it's for my clamshell and can't be used on a > >> different machine. I also have a full version of Mac OS 9.22 but > >> it's been burned to a CD with other sessions. > >> > >> What I want to do is erase the OS 9 partition on the G4, but it > >> doesn't appear I can do this unless I have a bootable OS 9 CD. > >> > >> Please advise. Thanks. > >> > > > Leith _________________________________________________ For information concerning the MUGLO List just click on http://www.freewebs.com/muglo/joinus.html Our Archives can be viewed at //www.freelists.org/archives/muglo Don't forget to periodically check our web site at: http://www.freewebs.com/muglo/