Internal drive slow, externals work fine
Internal hard drive became super slow to startup, (over 5 minutes). Also any task took longer, (about 10 times longer.)
Zapped pram, rebuilt permissions, and repaired disk, no improvement.
Disk utility, and techTool both reported OK, but took forever to run the tests.
Replaced internal drive with new, same results.
Everything is fine when starting from a cloned system on any external drive. (firewire,usb,flash, all work fine.)
I now suspect the HD cable, HD controller, or power supplies.
Any idea what to check next?