Good Eveneing,

 

using unraid for about 4 years now. Yesterday I had some big issues with unraid - webinterface was not reachable, home-assistant vm not reachable, mariadb docker not reachable but OpnSense VM and some Docker Container where reachable. After hard-restarting my unraid-machine, it seemed to work again. Today morning I just download a Flash-Backup directly from Unraid.

 

After downloading the Flash-Backup a couple minutes later i've got a error message that my Flash-Device is corrupted 😞 And I think I saw this message also at yesterdays night, but after restarting it was gone.

 

So I tried to restart my Unraid but it seems really to have some issues with the Flash-Device because its not reachable (can not look physical right now, I am not at home).

I made screenshots of my array/pool configuration which should be fine - but since I made a Flash-Backup just before Unraid showed me that my Flash-Device might be corrupted, I wonder how to check my Flash-Device-Backup for corruptions.

 

Dont know what to do now without having to reconfigurate my unraid

Can I just use the Flash-Device-Backup for my new Flash-Device? 

 

 

Please post the diagnostics.

On 4/29/2025 at 10:51 PM, Korschan said:

I wonder how to check my Flash-Device-Backup for corruptions.

I had a similar issue recently where my flash drive became corrupt and wouldn't boot anymore (bzfirmware was corrupted and failed the SHA check on boot)

In the end I did the following.

1. made a new fresh install USB stick with the UnRAID USB creator making sure the USB stick used the same version of UnRAID I had installed.

2. copied across the config directory from my backup to the USB stick

3. made sure there was only one licence .key file in there

4. reboot

If you want to sanity check your config directory in your backup

• just open up all the .cfg files in a text editor and make sure nothing looks garbled.

• Check the bz* files for a match on their associated SHA256 files. Can use any SHA256 tool or even powershell.

• The only other important file is config/super.dat which you can't look at in a text editor. That apparently contains all the drive assignments.

My old thread : https://forums.unraid.net/topic/190346-warning-your-flash-drive-is-corrupted-or-offline/

I eventually got back online which was a relief.

Edit: Whoops. This was an almost 2 month old post. The UnRAID forum bot asked me if I could help out. Silly Bot and Inattentive Hooman.

Edited June 27, 20251 yr by phoenixdiigital