540 Views 3 Replies Latest reply: Sep 25, 2013 11:29 AM by Doug Metz
The iMac hangs on startup at white screen. I have 2 LaCie firewire 800 drives daisy chained & connected to the iMac with the Firewire Adaptor in one Thunderbolt port, and a 2005 20" Cinema Display in the other via the DVI Adaptor. If I unplug the Firewire Adaptor it starts up normally. It was working fine after initially setting it up, then started hanging.