fmillion Posted May 21, 2011 Share Posted May 21, 2011 I have been having this problem for sure with the above mentioned drive, and I seem to recall it also occurring on other drives as well, but I can't remember the model numbers. My Blu-Ray burner from Lite-on does not seem to have any problem, nor did a CD-RW/DVD-ROM combo drive connected via a SATA to IDE adapter. The problem is that after some period of inactivity, the drive literally just drops offline. I'm assuming it is going into some sort of sleep mode that OSX is unable to rouse it from. The drive works exactly as expected normally, but after inactivity it drops offline and the only way to restore it is to reboot the system. Here's the messages from console: 5/20/11 11:29:14 PM kernel SerialATAPI device reconfiguration did not complete successfully. (failedCommandInfo = 0x1) 5/20/11 11:29:43 PM kernel IOSCSIPeripheralDeviceType05::setPowerState(0xba69c00, 1 -> 4) timed out after 100112 ms 5/20/11 11:29:43 PM kernel SerialATAPI device reconfiguration did not complete successfully. (failedCommandInfo = 0x1) 5/20/11 11:29:53 PM kernel SerialATAPI device reconfiguration did not complete successfully. (failedCommandInfo = 0x1) 5/20/11 11:29:53 PM kernel SerialATAPI Terminating due to unrecoverable Reset error - drive has stopped responding. (resetType = 0x0, newPowerState = 0x1, failedCommandInfo = 0x1) 5/20/11 11:29:53 PM kernel disk1: I/O error. 5/20/11 11:29:53 PM kernel 5/20/11 11:29:54 PM kernel 5/20/11 11:29:54 PM kernel disk1: media is not present. 5/20/11 11:29:54 PM kernel 5/20/11 11:29:54 PM kernel 5/20/11 11:29:54 PM kernel disk1: media is not present. 5/20/11 11:29:54 PM kernel 5/20/11 11:29:54 PM kernel 5/20/11 11:29:54 PM kernel disk1: media is not present. Any advice on this? Details: GA-P55M-UD2, SL 10.6.6, drive is running latest firmware from LG, connected to SATA in native AHCI mode Link to comment Share on other sites More sharing options...
Dellmantt Posted May 21, 2011 Share Posted May 21, 2011 System Preferences - Energy Saver, uncheck "put discs to sleep when possible" Worth a try. Link to comment Share on other sites More sharing options...
fmillion Posted May 25, 2011 Author Share Posted May 25, 2011 That seems to have worked!... thanks a lot! Guess some drives don't react well to how OSX puts SATA devices to sleep... FM Link to comment Share on other sites More sharing options...
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