I have an unRAID sever that I haven't used in over 10 years. I am now trying to get the files off of the drives, but no longer have the USB boot disk. Sounded like the best way to go was to reinstall unRAID. I still have a printout of my drive configuration settings and it says that I was using version 4.5.4. In my archives I had a setup package for version 4.7, so I created a new USB disk using that. The server still has my license and config info. Using the configuration printout, I was able to get my drives in the correct slots and was able to pull up the configuration screen on my Windows 11 laptop. Curious that the version still says 4.5.4. My shares were still there as well.

Problem is that I can't access the server via Windows Explorer. I can access the server config using //tower.local and the IP address, but the server or shares don't show in Explorer when I try to browse the network. All of the help docs that I see refer to newer versions of unRAID.

How can I upgrade to a newer version that is still compatible with 4.5.4?

Thank you.

To upgrade from such an old version, it will need to be done manually, but you can reimport the array.

Backup the current flash drive first and then recreate it using the USB tool with 7.2.0 and just restore the key and super.dat, then boot the server. All the devices should be correctly assigned, and it will use DHCP to get an IP, then you just need to reconfigure the rest, like server name, network settings, shares, etc.

Thank you. Can you explain how to restore the key and super.dat? I created a 7.2.0 USB drive using the tool. When I boot with it and access tower.local from my laptop I'm still getting the same 4.5.4 configuration screen.

Just copied them to the /config folder in the new flash drive.

Thanks for the reply. I think I'm going to have to go the paid support route.

I don't see super.dat on the flash drive at all, or anything related to the key.

I made a 7.2.0 flash drive, but when I tried to boot with it the server still booted to 4.5.4. I took the flash drive out and booted without one at all and it still booted to 4.5.4. I have no idea how that could happen.

Thanks again for the help.

Sounds like you either didn't actually create the 7.2.0 flash drive or you copied over all the old files from the 4.5.4 flash backup you created instead of the supter.dat and .key files

1 hour ago, mike_k said:

I took the flash drive out and booted without one at all and it still booted to 4.5.4. I have no idea how that could happen.

Sounds as if you have another flash drive plugged in somewhere? You have not got one by any chance internally plugged directly into the motherboard.

I don't have my original 4.5.4 flash drive.

I created the 7.2.0 flash drive using unraid-usb-creator-1.1.0.exe. I didn't copy any other files to it.

I initially created a 4.7 flash drive using unRAID+Server+4.7+AiO.zip that I had on my laptop - don't know when I downloaded it.

I think the problem is that the server isn't using either flash drive to boot from. I can boot to the 4.5.4 instance without inserting any flash drives. I have 6 hard drives in the server - the parity drive and 5 data drives. I'm not sure what drive the server can be booting from.

The label on the server is Lime Tech. I'm not aware of any internal storage where the boot files could be stored, but maybe there is. Maybe what I really need is assistance on the hardware side.

What does the BIOS detect as the boot media?

On 11/3/2025 at 8:01 PM, mike_k said:

I'm not aware of any internal storage where the boot files could be stored, but maybe there is.

I would suggest opening up the server and looking for a flash drive plugged directly into the motherboard.