Western Digital External HD support
The support tech ("Albert") informed me that WD and "all external HDs" should NEVER be used as bootable drives, because they run slower than the internal machine drives and they "return errors" when doing so. I explained that I've been using externals for years with no problem, and many others people have, also, and that using SuperDuper (for example) CREATES a bootable system specifically for the above purpose. I asked him if WD is working to correct connectivity issues with 10.6 and he said yes. I then asked if he was telling me that the official stance was that WD did not support booting your home machine from an external WD HD and he said yes.
Obviously, I will be purchasing an external HD from a different vendor as soon as possible. I'm posting this, not to slag WD, but as a head's up to any others with this issue.
iMac 24" G5; iMac G5 17 isight; iPhone 3G, Mac OS X (10.6)