On Nov 13, 2003,, at 11:45 AM, Tech Support wrote: > To optimize, journaling must be turned off. You can do this in Panther > using > Apple's Disk Utility. Just launch Disk Utility under Panther, select > the > volume you wish to optimize from the volume list, and chose "Disable > Journaling" from the "File" menu. After optimizing, you can turn > journaling > back on if you wish. > > Just a note to end this string and to thank you for your support I finally was able to to successfully Optimize my Primary Drive with Drive 10 V1.1.4 using the routine of booting up on a backup drive ( as you suggested) My main problem was not the journaling issue but the fact that the Primary Drive would not dismount. I could boot up and read-write to the primary drive , but Using Disk Utility it would not dismount , and hence, reformat or erase or whatever! This was new experience for me. I do not know how long the anomaly existed since I never had the need to configure my primary drive as a non bootup volume. I will not go into all the attempted "fix-it" scenarios that did not work; but what finally did the trick was to run "Repair Permissions" in Disk Utility. And that was a real experience. When I toggled it ON, there was a continuous scrolling in the display window that continued on for a full 10 minutes or so. It would appear that every file (?) on the disk had to be repaired. I really don't know what that was all about or what the corruption source was; but after the smoke cleared, Disk utility was able to dismount the drive and successfully run its verification program. And , as delineated above, Drive 10 was able to do its thing Thanks again for your time Albert Dual 1.25 GHz PowerPC G4 (FW800 Model) 1.75 GB DDR SDRAM Panther 10.3.1