site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Stephen _______________________________________________ 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... On May 31, 2006, at 8:36 AM, Garth Cummings wrote: I've omitted the error handling code, but I do checking. opendev () works every time, but as I mentioned, ioctl() fails from the debugger. Any ideas why? What's the value of errno when ioctl returns -1? That's the biggest clue about what "fails" means in this case. ;-) Ah, that would be helpful, wouldn't it! The error is 5:Input/output error. If you want to see the whole code in context it is on http:// svn.sourceforge.net/viewcvs.cgi/macaudiox/trunk/Drive/Drive.m? view=markup This email sent to site_archiver@lists.apple.com