
I’m running Tiger (Mac OS 10.4.11) on my six-year-old PowerPC iMac. I want to upgrade my OS to as high as it can go and then upgrade some applications as well. I got a series of OS upgrades from apple.com/download, which I thought would take me from 10.4.11 up to 10.4.6. But unless I can get 10.4.2 installed, I have no hope of moving further. When I attempt to install 10.4.2, I get a message saying, “You can’t install Mac OS X Update on this volume. This volume does not meet the requirements for this upgrade.” Is the problem that I’m upgrading from 10.4.11 rather than 10.4.1? I don’t have 10.4.1 to go back to. Any wisdom, or am I stuck in a sinkhole?