Problems upgrading TrueNAS SCALE 25.04.2.6 -> 25.10.1

TrueNAS General
21

Yes, I did exactly like that.

22

Strange. You don’t have access to the link that our Bug Clerk sent you to attach it as a private debug?

If no, then send me a DM and I’ll relay it for you.

23

Yes, I confirm. If I follow the link in the ticket I get redirected to a /user/forbidden page.

I sent you the dump via DM. Consider that I had to send you a link because I can’t attach files other than images.

Thanks!

24

Received, uploaded, and attached for our team to investigate. Thanks for the quick reply.

I’ll have IT look into why the Jira instance wouldn’t let you ship it in yourself.

1 Like
25

@HoneyBadger seems that the problem is solved and the fix will be released in version 25.10.2, did I understood well from Jira?

Thanks!

26

There was a linked work item, ticket to NAS-139573

It gave the following for a fix

This error means the UEFI NVRAM (where boot entries are stored) is full. The UEFI firmware has limited space for boot variables, and
you’ve run out.

The warning shows there’s already a boot entry labeled “TrueNAS-0”, and when trying to add another, it fails because there’s no space
left in NVRAM.

To fix this:

Boot from a live USB/installer

List all boot entries:
efibootmgr -v

Delete old/unused entries to free space:
efibootmgr -b XXXX -B

(where XXXX is the boot number like 0006, 0007, etc.)

Focus on removing:

Duplicate TrueNAS entries

Old OS entries you no longer use

Generic entries like "UEFI OS" or "Linux Boot Manager"

Retry the installation

Note: Some systems have buggy UEFI firmware that leaks NVRAM space. If this keeps happening, you may need a firmware update or to

periodically clean boot entries.

This is a common issue with repeated Linux installs on the same hardware - each install attempt can leave behind boot entries that
accumulate over time.

27

You did. That ticket is fixed and merged into 25.10.2 (and 26 going forward).

28

Thanks!