Failed to upgrade to 25.10 - EFI "Could not prepare Boot variable: No space left on device"

TrueNAS General
1

I have a Dell R720 that’s currently running 25.04.2.5, and trying to upgrade to 25.10, I get the error:

[EFAULT] Error: Command ['chroot', '/tmp/tmprm1fbdml', 'efibootmgr', '-c', '-d', '/dev/sdf', '-p', '2', '-L', 'TrueNAS-0', '-l', '/EFI/debian/grubx64.efi'] failed with exit code 5: efibootmgr: ** Warning ** : Boot000A has same label TrueNAS-0 Could not prepare Boot variable: No space left on device

Running efibootmgr -v, I see (removed MAC addresses and UUIDs):

admin@truenas[~]$ efibootmgr -v
BootCurrent: 000B
Timeout: 2 seconds
BootOrder: 000B,000A,0006,0007,0001,0005,0000,0002,0003,0004
Boot0000* EFI Network 1 PcieRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0001* EFI Fixed Disk Boot Device 1  PcieRoot(0x0)/Pci(0x2,0x2)/Pci(0x0,0x0)/SAS(xxx,0,1,NoTopology)/HD(2,GPT,xxx,0x1800,0x100000)
Boot0002* EFI Network 2 PcieRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x1)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0003* EFI Network 3 PcieRoot(0x0)/Pci(0x1c,0x4)/Pci(0x0,0x0)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0004* EFI Network 4 PcieRoot(0x0)/Pci(0x1c,0x4)/Pci(0x0,0x1)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0005* EFI Fixed Disk Boot Device 2  PcieRoot(0x0)/Pci(0x2,0x2)/Pci(0x0,0x0)/SAS(xxx,0,1,NoTopology)/HD(2,GPT,xxx,0x1800,0x100000)
Boot0006* EFI Network 5 PciRoot(0x2)/Pci(0x3,0x2)/Pci(0x0,0x0)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0007* EFI Network 6 PciRoot(0x2)/Pci(0x3,0x2)/Pci(0x0,0x1)/MAC(xxx,1)/IPv4(0.0.0.00.0.0.0,0,0)
Boot000A* TrueNAS-0     HD(2,GPT,xxx,0x1800,0x100000)/File(\EFI\debian\grubx64.efi)
Boot000B* TrueNAS-1     HD(2,GPT,xxx,0x1800,0x100000)/File(\EFI\debian\grubx64.efi)

I tried making an account and Jira ticket using the Report a Bug link at the top of this forum page, but it tells me permission denied and that I need to login, even though I’m already logged in?

2

Just stumbled upon your issue while searching for a solution.

I am facing the same problem also running on an R720.

I did install the 25.10 RC1 before but decided to stay on the older 25.4 release so I switched the primary boot image back to the older release.

Might be an issue with people who did install the RC1 first?