Q: Reset PMU Xserve
Got an XServe intel version. Trying to reset the PMU as the fans have gone crazy. Had an engineer look at it, given the all clear but the instructions we've found are not at all clear and don't actually make sense.
*+1. In order to enter the headless command mode, hold the identifier button while you power the Xserve on.+*
*+2. Keep pressing the identifier until you see the top row of blue lights on the Xserve blinking.+*
*+3. Stop pressing the identifier button. You'll notice that the right-most blue LED on the bottom row is lit up - this indicates that the system will start from the system disk.+*
*+4. At this point you can press the system identifier button in order to cycle through the boot options. They are as follows (right to left)+*
*+- System Disk+*
*+- Network Boot+*
*+- Start from leftmost drive+*
*+- Boot next disk (other than startup disk)+*
*+- Target Boot Mode+*
*+- Reset PMU+*
*+5. Release the button once again and the system will boot into your desired mode.+*
We can get it to the 4th step and light up the PMU reset light but we would have already released the button to select that option! It then just sists there and doesn't reboot. If you power down and restart it starts normally again!
Any ideas? (Can't reset on MB as we can't access the server without serious surgery in the cabinet, it's not on rails)
Thanks.
*+1. In order to enter the headless command mode, hold the identifier button while you power the Xserve on.+*
*+2. Keep pressing the identifier until you see the top row of blue lights on the Xserve blinking.+*
*+3. Stop pressing the identifier button. You'll notice that the right-most blue LED on the bottom row is lit up - this indicates that the system will start from the system disk.+*
*+4. At this point you can press the system identifier button in order to cycle through the boot options. They are as follows (right to left)+*
*+- System Disk+*
*+- Network Boot+*
*+- Start from leftmost drive+*
*+- Boot next disk (other than startup disk)+*
*+- Target Boot Mode+*
*+- Reset PMU+*
*+5. Release the button once again and the system will boot into your desired mode.+*
We can get it to the 4th step and light up the PMU reset light but we would have already released the button to select that option! It then just sists there and doesn't reboot. If you power down and restart it starts normally again!
Any ideas? (Can't reset on MB as we can't access the server without serious surgery in the cabinet, it's not on rails)
Thanks.
24" iMac, 17" Mac Book Pro, Mac Pro Quad Intel Dual Core, Mac OS X (10.5.6), Infortrend 20TB RAID - ATTO Fibre Channel - FCP Certified Pro Trainer
Posted on Feb 10, 2011 7:35 AM