Ready NAS Ultra 6 Plus - OS 6.9.5 >> 6.10 Upgrade Fail - Safe Mode Options

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StephenB wrote:

 

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UltraGar wrote:

Would I be doing steps similar to this to try mounting the volume in Read Only mode?

 

https://community.netgear.com/t5/Using-your-ReadyNAS-in-Business/Disk-volume-no-longer-active-force-activation/m-p/1553673#M144637

 

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You could try that, and if those commands work do a backup of the NAS.

 

You'd boot in tech-support mode, and telnet into the NAS.  User/pass is root/infr8ntdebug

Then enter

# rnutil chroot

Which will start RAID and chroot.

 

It might be worth trying to re-apply the firmware update next.  You'd do this by

# touch /.os_update
# reboot

If that fails, you'd have to reboot in tech support mode, and go in again.

 

 

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Thanks for the valuable information StephenB!  I was able to enter Tech Support mode and use the login information to perform some tasks.

The rnutil chroot command did not work because there's no bash available, however, using the information from the other thread, I found mdadm and btrfs already installed and was able to mount the RAID volume in read-only and it appears intact.  It's reassuring to at least see the files and folders there.

It's a little slow going in part to getting acquainted with the Busybox Linux, getting SSH running through Dropbear, and not quite succeeding with WinSCP (which likes bash or ksh) or SFTP yet.  Will also try to transfer files via USB once I figure out how to find and mount it.

I took a peek at the Boot volume and noticed that I'm only using about 25% of the avalable space (2.7G free).  Thought maybe it was full and caused a problem on the upgrade.  Once I get the files off, I'll try re-running the upgrade.  At USB 2.0 transfer speeds, this could be a while.

As a related question, would I be able to take these OS6-formatted drives and transfer them over to a newer unit, like the RN426 (6 drives in the legacy unit, 6 slots in the new unit), use the boot menu to get into Read-Only mode to access the data that way (I don't have Read-Only option on the Ultra 6 Plus)?  If so, and assuming no corruption or failed disks, would I be able to simply transfer the files via SMB instead?

Anyway, thanks again for the help StephenB!  I'll check in again soon!