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Solved
ReadyNAS RN516 - mount_block_root+1f1 - Will not Boot
After restarting my RN516 this morning the error message "mount_block_root+1f1" is displayed.
In searching for the resolution to this problem I was lead to the following instructions on restori...
The procedure to boot off USB on older RN516 units (with an old BIOS) is a bit tricky. It can take multiple attempts to get the timing right for pressing the O.K. button.
About 5 seconds after you power on the NAS, the touch key LEDs will go off full brightness
Press and hold the O.K. button as soon as the LEDs go off. You must be quick here. You can't press sooner as the touch key needs self-recalibration, you can't press later as the boot priority will be set within 3 seconds. You don't need to press the button too hard, but you do need to make sure the O.K. LED is turned on.You can release the O.K. button once you see the "Boot from external USB" message shown on the display.
Please also note that not all USB keys are compatible.
The procedure to boot off USB on older RN516 units (with an old BIOS) is a bit tricky. It can take multiple attempts to get the timing right for pressing the O.K. button.
About 5 seconds after you power on the NAS, the touch key LEDs will go off full brightness
Press and hold the O.K. button as soon as the LEDs go off. You must be quick here. You can't press sooner as the touch key needs self-recalibration, you can't press later as the boot priority will be set within 3 seconds. You don't need to press the button too hard, but you do need to make sure the O.K. LED is turned on.
You can release the O.K. button once you see the "Boot from external USB" message shown on the display.
Please also note that not all USB keys are compatible.
Thank mdgm,
I just tried to press OK as you have instructed but with no success. The Touch key LEDs go off after only 2 to 3 seconds.
Will it still attemt to use the USB even if it is not compatible? How will I know if I need to get a different USB? The USB recovery tool seemed to finish it's proceedure and appropriate looking files ended up on the USB.
Also, I am inserting the USB into the front USB. This is what the instructions said to do, but should I try one of the rear USB ports?
If the USB key is not compatible it won't be able to boot off it. The USB Boot Recovery tool may seem to work even on incompatible USB keys.
If the procedure has been followed correctly and it's failing to boot off the USB key then you should try another USB key.
It takes me multiple attempts usually to boot a RN516 system with an old BIOS off USB.Use the front USB port.
It finally worked!
It felt like I did nothing different but after going through 3 USBs I wend back to the first USB I made and it worked!
Thanks for your help. I really didn't want to have to deal with a rebuild from my backup. So I'm very happy.
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