site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com - Terry On Mar 9, 2008, at 3:52 PM, stephen joseph butler wrote: I've discovered that a USB SD media reader that I have will cause my Mac Pro to be unable to boot while plugged in. The system chime occurs, but the computer sits at the grey screen forever and things like holding down option to choose the boot volume and command-option-p-r to zap the PRAM do not work. I'd like to file a radar, but I'm not exactly sure what information might be needed to be collected or how I might need to go about collecting the information. The reader works when plugged into the system after it has booted. I work for a university department that manages 1000 machines (~200 Macs and the rest PC). We frequently see this type of problem, usually with cheaper USB devices. In particular, a couple years ago we had some USB Zip drives and floppy drives. If the devices were connected when the computers restarted they would hang in the same way. Both the Macs and PC's. I always figured it was a problem initializing the USB device. Eventually we phased them out, so I didn't worry about it too much. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/galimore%40mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... I agree with you in that it's probably not an OS level issue... the OS never starts booting, but it's probably an EFI issue, and since Apple is the distributer of EFI for their motherboards, it's still an Apple issue. I asked the Darwin list because it seems the most likely place to get a good answer on how to get an appropriate bug filed, but now that I look at lists.apple.com again, there's a boot-dev list... I think I'll post there instead. Apple doesn't have time to test every USB/Firewire/whatever device, and I realize that... but I can't imagine they'd turn down a good bug report... though worst case scenario they might come back and say they're not going to fix it. Still, it seems like a good thing to report. On Sun, Mar 9, 2008 at 4:36 PM, Terry Simons <galimore@mac.com> wrote: After several reboots and attempts to figure out what might be causing my system malfunction, I unplugged said USB device and the apple logo appeared immediately. Any thoughts here? This might not be a Darwin issue. Have you tried it on a Windows machine? This email sent to galimore@mac.com This email sent to site_archiver@lists.apple.com