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I created the recovery USB as instructed on my PC, but when I attempted to boot via the USB the same error message is diplayed.
The RN516 does not have a backup button so I followed the instruction to hold the "OK" button for 30 seconds, but this does nothing and "mount_block_root+1f1" is still displayed.
I then tried to enter the boot menu using the following instructions, but the boot menu does not load and "mount_block_root+1f1" is still displayed.
Re: ReadyNAS RN516 - mount_block_root+1f1 - Will not Boot
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.
Re: ReadyNAS RN516 - mount_block_root+1f1 - Will not Boot
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.
Re: ReadyNAS RN516 - mount_block_root+1f1 - Will not Boot
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?
Re: ReadyNAS RN516 - mount_block_root+1f1 - Will not Boot
Glad it's now resolved.
Pressing the O.K. button at the right time isn't easy, we recognised this and fixed this in a later BIOS.
Also note that if you are the original purchaser from an authorised reseller the limited hardware warranty is 5 years from the date of purchase, so it should still be under warranty. So worst case you would have had to contact support about a warranty replacement.
It's possible at your own risk to attempt to recover data from a ReadyNAS using free software on an ordinary x86 Linux machine. There is paid software available for Windows too.
Also disks can be moved across into another ReadyNAS (best to ask for advice on that if that ever becomes necessary).
The RN526X, RN528X, RN626X, RN628X would be suitable upgrades from the RN516.
The RN426 and RN428 would also have been options, but would be lower performance options than the RN516.
