site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Hey Nik, Did you unmount the disk first? Dan On 11 Mar 2008, at 10:30 AM, Nick Rogers wrote: Any help would be greatly appreciated. Wishes, Nick _______________________________________________ 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... Hi, I'm using "BetterAuthorizationSample" from apple, which installs a privileged helper tool for performing privileged operations. While using this I can obtain a valid file descriptor for reading any disk, I can not get a valid file descriptor for writing to disk (/dev/rdisk1, which is a pen drive). I'm using: fileDesc = open(path, O_RDWR); in the privileged part (helper tool) of my code. This email sent to site_archiver@lists.apple.com