Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Won't awaken after PowerMac G5 sleeps

The drive has one important problem. When a PowerMac G5 goes to sleep the drive, connected by Firewire, loses contact. When the Mac wakes a dialog box appears saying that a device has been improperly removed. Since there is no on-off switch on the drive, it is necessary to unplug-replug it. (It doesn't appear to have this problem when connected by USB.) Western Digital does not seem to have implemented Firewire so that it is wholly compatible with Apple products.Update: Other people are reporting sleep problems with these drives, but resetting the PMU on the Mac seems to have fixed it for me. However, the drive too frequently goes to sleep, and there is no way to control this. It is annoying waiting for the drive to waken.Second update: The drive problem has resurfaced with Apple's update to 10.4.9. I'm also having fatal problems with Western Digital's Passport drive. Beware this company's current drives with Macs.