This is a very good point, having both OSs on the new drive. For classic ops, it does not matter which copy of OS 9 you make the Classic. Just slim down the offerings in the Extensions Manager to create a Classic Quick Start set. But I would not bother going back into the machine to switch master/slave. The new drive as slave does not care about what happens to the old master. "Master/slave" is bad terminology, but we live with it. The slave does not depend on the master for anything. -- Al Poulin On Oct 1, 2004, Ron Steinke <ronsteinke at mac.com> wrote: > In addition to making the switch described by John, I suggest > installing OS-9 on the larger drive to insure having it available for > any Classic application/software that you might use. > > If the smaller drive goes west on you, you will still have both the > OSes available on the larger and can continue your work without > interruption. > > On 1 Oct, 2004, at 11:49, John Baltutis wrote: >>> My question is, does having the 80GB drive set as slave have >>> any >>> affect on performance? Would it make any difference if I changed the >>> 10GB >>> drive to slave and the 80GB drive to master? >> >> Nope. However, I'd swap the two, making the new HD the master and the >> other >> the slave.