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RN51600 – ReadyNAS 516 6-Bay, Diskless won't boot any longer
Hello folks - Came to my PC to discover that the NAS 516 wasn't accessible and had an error code of "MOUNT_BLOCK_ROOT+25" - I searched the forum and saw this issue already. I created a USB recovery...
Although it is out of warranty, you can still get paid support.
Also, if you purchased between 1 June 2014 and 31 May 2016 you have lifetime chat support at my.netgear.com. So take advantage of that if you have it.
tino19625 wrote:
I have 2 drives installed in the ReadyNAS 516 and the system setup the RAID, I don't know much more than that
Then the system should be running RAID-1. The two disks are mirrored. One possibility is that some cached writes got lost when the system crashed - then the volume could be out of sync and wouldn't mount. It's also possible that the disks have failed - you could try downloading the full log zip file, and look for errors in system.log and kernel.log.
If you want to use paid Netgear support (or the free live chat), then you should do that first - and not attempt to fix anything while you are waiting. Trying to fix it on your own runs the risk of making the data harder (or even impossible) to recover.
If you want to proceed on your own, you could try
- powering down the NAS
- removing disk 2
- booting up in read-only mode using the boot menu
If that works, you should immediately back up all the files on the NAS. If it fails, you could try it again with only disk 1 in place. Make sure you power down the NAS before adding/removing the disks.
If those experiments fail, then you could try connecting the disk to a Windows PC, and trying ReclaiMe data recovery software. It is free to try, but you would need to pay to recover any files.
I REALLY appreciate the insight - I've been on a chat with Netgear's support and waiting on Level 3 support to contact me with trying to get into it. The NAS is in Debug Mode with a code that I was told to leave alone - so I am, hopefully they can resolve this BUT, I do appreciate the time and information that I may need, depending on how this goes.
I'll update this and for sure, learned a hard lesson, as always about backing up to the cloud - I know better!
tino19625 wrote:
as always about backing up to the cloud - I know better!
I'll spare you my backup lecture then. :smileywink:
:smileylol: trust me, I've been working in telecom for 20+ years and have given that speech plenty of times which why it's embarrassing on my part -
for the record, so nobody else does this, when I created my USB recovery drive - I put in an older firmware version and I believe that that created my new issue with the RAID message - when I downloaded the firmware, I thought it was the latest; dangerous word being "thought" - an L3 engineer is trying to untangle the mess that I self inflicted... once completed I'll update this for future reference with the USB recovery drive.
thanks for sparing me the "deserved" speech :smileywink:
Let Netgear support help you as much as they can first. Hopefully, they'll get you through the problem.
If you did downgrade the OS via USB recovery, that can cause issues if you go back beyond the first decimal place (e.g. 6.10.x to 6.9.x or earlier). But, since the NAS cannot mount the data volume, and if the downgrade is the cause of the new issue, it should still be intact and I would think that updating back to the version you previously had or earlier might fix it.
Recovering your data from cloud backup can be painfully slow. So if Netgear can't help you, there are some things (what I said above, and maybe more) that might help you get the NAS back up and running or at least be able to create a local backup for faster restoration. Just let us know if you need to try them.
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