I believe what you’re looking at is a list of items that your NVRAM contains. If you check back to my second thread post here (#4) you’ll see I then raised the possibility of limited NVRAM.
# df /sys/firmware/efi/efivars
df: no file systems processed
#
???
Too late to edit. 10 minutes not long enough.
# inxi -S
System:
Host: ab250 Kernel: 6.6.46-1-longterm arch: x86_64 bits: 64
Console: pty pts/0 Distro: openSUSE Tumbleweed 20240818
# ls -Gg /sys/firmware/efi/efivars/ | wc -l
98
# df /sys/firmware/efi/efivars
df: no file systems processed
#
No comprende. 
I suspect its history from windows, but I could be wrong.
I am already googling what happens if you delete all content.
What I am gonna try:
First let’s see which one I can get rid off, Boot0010* or Boot0011*
Then copy this file so that I have a backup.
Then see what happens if I delete all but the then 3 left Boot00**
Also going to look at leap /sys/firmware/efi/efivars.
I have not found yet how this works on windows, does that have an efivar folder too and were is it?
We already know 0000 is Windows, 0010 is TW and 0011 is Leap. I would delete others first, to free space for writing NVRAM. The question is how?
The real issue is that /sys/firmware/efi/efivars gets filled up with dumps like dump-type0-1-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
They don’t belong there. And by opening this directory with a filemanger you will also see that they are the biggest files with some kB. All other entries in this directory are valid and belong there including the boot entries which are only some B big.
The dumps do not belong there. You need to find out what creates the dumps and stop the creation.
Thank you, I had found that page, but I lack the real understanding of this subject to determine what page to use. 
They most certainly do. They are created by Linux kernel to persistently store crash information so it survives across reboot. They are not intended to stay there forever - something (e.g. systemd-pstore.service) is expected to fetch them on next reboot and move into more appropriate place.
Timestamps on these files are between 23rd and 30th of November, 2021. Of course, one could look into crash information in these files, but I doubt it would be of much use three years later.
SUSE disabled efi_pstore backend by default in 2022.
I had a look at my leap install.
It seems /sys/firmware/efi/ has two folders efivars and vars (dolphin)
On tumbleweed I do not see the vars folder.
This is from tumbleweed:
guus@localhost:~> su
Wachtwoord:
localhost:/home/guus # ls
Afbeeldingen .bash_history .bashrc bin Bureaublad .cache .config Documenten Downloads .emacs .gtkrc-2.0 .i18n .inputrc .local .mozilla Muziek Openbaar .profile Sjablonen .steam .steampath .steampid Video's Wiet .wine .xim.template
localhost:/home/guus # ..
localhost:/home # ..
localhost:/ # ls
bin boot dev etc home lib lib64 mnt opt proc root run sbin .snapshots srv sys tmp usr var
localhost:/ # cd sys
localhost:/sys # ls
block bus class dev devices firmware fs hypervisor kernel module power
localhost:/sys # cd firmware
localhost:/sys/firmware # ls
acpi dmi efi memmap
localhost:/sys/firmware # cd efi
localhost:/sys/firmware/efi # ls
config_table efivars esrt fw_platform_size fw_vendor runtime runtime-map systab
localhost:/sys/firmware/efi #
Questions:
So I am dragging along some history it seems?
Do I manual have to delete the dumpfiles as root ?
Found a command rm *, but I am pretty sure I should not use * because the it will delete all files, not just the dumpfiles?
vars and efivars, both seems to have almost the same content.
I will now reboot again to Leap and show the folders, with the commandline from leap.
From leap:
guus@localhost:~> su
Wachtwoord:
localhost:/home/guus # ..
localhost:/home # ls
guus lost+found .Trash-1000
localhost:/home # ..
localhost:/ # ls
bin boot dev etc home lib lib64 lost+found mnt opt proc root run sbin selinux srv sys tmp usr var
localhost:/ # cd sys
localhost:/sys # ls
block bus class dev devices firmware fs hypervisor kernel module power
localhost:/sys # cd firmware
localhost:/sys/firmware # ls
acpi dmi efi memmap
localhost:/sys/firmware # cd efi
localhost:/sys/firmware/efi # ls
config_table efivars esrt fw_platform_size fw_vendor runtime runtime-map secret-key systab vars
localhost:/sys/firmware/efi #
The content of var:
localhost:/sys/firmware/efi/vars # ls
AMD_PBS_SETUP-a339d746-f678-49b3-9fc7-54ce0f9df226 dump-type0-13-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
AMD_RAID-fe26a894-d199-47d4-8afa-070e3d54ba86 dump-type0-13-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
AmdSetup-3a997502-647a-4c82-998e-52ef9486a247 dump-type0-13-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
AmiHardwareSignatureSetupUpdateCountVar-81c76078-bfde-4368-9790-570914c01a65 dump-type0-13-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-1-1639935441-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
AMITCGPPIVAR-a8a2093b-fefa-43c1-8e62-ce526847265e dump-type0-14-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-1-1647270393-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ApSyncFlagNv-ad3f6761-f0a3-46c8-a4cb-19b70ffdb305 dump-type0-14-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ASR_USER_DEF_VER-8f132913-6907-4192-a227-6cbcd7a50e6c dump-type0-14-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ASR_USER_DEF_VER-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9 dump-type0-14-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
Boot0006-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-6-3-1638288445-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
Boot0010-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
Boot0011-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BootCurrent-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BootOptionSupport-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-14-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BootOrder-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-15-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BugCheckCode-ba57e015-65b3-4c3c-b274-659192f699e3 dump-type0-15-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-1-1647270393-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BugCheckParameter1-ba57e015-65b3-4c3c-b274-659192f699e3 dump-type0-15-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
BugCheckProgress-ba57e015-65b3-4c3c-b274-659192f699e3 dump-type0-15-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
CaseOpenStatus-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9 dump-type0-15-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ConIn-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-15-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ConInDev-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-15-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-7-3-1638288445-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ConOut-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-15-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
ConOutDev-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-15-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
CurrentPolicy-77fa9abd-0359-4d32-bd60-28f4e78f784b dump-type0-15-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dbDefault-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-16-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dbxDefault-8be4df61-93ca-11d2-aa0d-00e098032b8c dump-type0-16-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DefaultBootOrder-45cf35f6-0d6e-4d04-856a-0370a5b16f53 dump-type0-16-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-1-1639935441-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DefaultLegacyDevOrder-3c4ead08-45ae-4315-8d15-a60eaa8caf69 dump-type0-16-1-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
del_var dump-type0-17-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DeploymentModeNv-97e8965f-c761-4f48-b6e4-9ffa9cb2a2d6 dump-type0-17-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DmiArray-4b3082a3-80c6-4d7e-9cd0-583917265df1 dump-type0-18-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DmiVar0200020700-4b3082a3-80c6-4d7e-9cd0-583917265df1 dump-type0-19-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-8-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
DRAM-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9 dump-type0-20-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-21-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1638025837-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-1-1639935441-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-2-1638288071-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-2-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-9-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0
dump-type0-10-3-1638288446-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-2-1638288070-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 ErrOut-8be4df61-93ca-11d2-aa0d-00e098032b8c
dump-type0-11-1-1637684072-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 ErrOutDev-8be4df61-93ca-11d2-aa0d-00e098032b8c
dump-type0-11-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-2-3-1638288445-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 FPDT_Volatile-01368881-c4ad-4b1d-b631-d57a8ec8db6b
dump-type0-11-1-1638025838-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 HiiDB-1b838190-4625-4ead-abc9-cd5e6af18fe0
dump-type0-11-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 KEKDefault-8be4df61-93ca-11d2-aa0d-00e098032b8c
dump-type0-11-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1638025837-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 LoaderDevicePartUUID-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
dump-type0-1-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 LoaderInfo-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f
dump-type0-1-1-1637768138-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 LoadSetupDefault-8be4df61-93ca-11d2-aa0d-00e098032b8c
dump-type0-1-1-1637860615-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-1-1639935441-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 MacAddrVar-8f132913-6907-4192-a227-6cbcd7a50e6c
dump-type0-1-1-1638025837-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 MaximumTableSize-4b3082a3-80c6-4d7e-9cd0-583917265df1
dump-type0-1-1-1638280025-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 MemoryOverwriteRequestControl-e20939be-32d4-41be-a150-897f85d49829
dump-type0-1-1-1638289310-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-2-1638288070-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 MemoryOverwriteRequestControlLock-bb983ccf-151d-40e1-a07b-4a17be168292
dump-type0-1-1-1639935441-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-2-1638289314-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 MonotonicCounter-01368881-c4ad-4b1d-b631-d57a8ec8db6b
dump-type0-11-2-1637860616-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-3-3-1638288445-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 new_var
dump-type0-11-2-1638025864-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 dump-type0-4-1-1637684069-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 OA3MSDMvariable-01368881-c4ad-4b1d-b631-d57a8ec8db6b
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Content of efivars and var look almost the same, but it seems var is the original folder, atleast on leap.
I want to try to delete all dumpfiles.
But there are so many, already 179 on tumbleweed.
With rm I seem to have to delete them one by one? 
There must be an easier way ?
rm -f file*dump ?
Use a wildcard. You can use
sudo rm dump-type0-*
This will delete all files which start with dump-type0-xxxxxxxx
That worked like a charm it seems, thank you.
Now gonna do the same on leap, and I am praying they wont return after a reboot.
guus@localhost:/sys/firmware/efi/efivars> sudo df /sys/firmware/efi/efivars
Bestandssysteem 1K-blokken Gebruikt Beschikbaar Geb% Aangekoppeld op
efivarfs 128 10 114 9% /sys/firmware/efi/efivars
guus@localhost:/sys/firmware/efi/efivars>
Fingers crossed… Down to 9%.
Now will do the same on leap.
If they come back after reboot, you also need to delete the same files in /sys/firmware/efi/vars
I know there is on leap a vars and efivars folder, that why I was planning already to do this in both folders.(delete the dump files)
Thumbleweed only seems to have a efivars folder. 
I did a reboot and started Leap.
To my surprise those dumpfiles, were already gone on Leap. (from var and efivar)
Then I started Tumbleweed and did this:
guus@localhost:~> LANG=C
guus@localhost:~> sudo df /sys/firmware/efi/efivars
Filesystem 1K-blocks Used Available Use% Mounted on
efivarfs 128 10 114 9% /sys/firmware/efi/efivars
guus@localhost:~>
omg, do we have a winner?
Almost can’t believe it. 
For now I am gonna thank everybody for their help.
Now starting YAST, bootloader, should work again.
A motherboard died last week. I just installed its (used) replacement. All working good, but inexplicable output from df /sys/firmware/efi/efivars on this one too, like my other:
ab85m:/sys/firmware/efi # cd /sys/firmware/efi/
ab85m:/sys/firmware/efi # ls -l
total 0
-r--r--r-- 1 root root 4096 Sep 8 13:02 config_table
drwxr-xr-x 2 root root 0 Sep 8 09:01 efivars
drwxr-xr-x 3 root root 0 Sep 8 13:02 esrt
-r--r--r-- 1 root root 4096 Sep 8 13:02 fw_platform_size
-r--r--r-- 1 root root 4096 Sep 8 13:02 fw_vendor
-r--r--r-- 1 root root 4096 Sep 8 13:02 runtime
drwxr-xr-x 13 root root 0 Sep 8 13:02 runtime-map
-r-------- 1 root root 4096 Sep 8 13:02 systab
ab85m:/sys/firmware/efi # cd efivars
ab85m:/sys/firmware/efi/efivars # ls -l | wc
101 902 9206
ab85m:/sys/firmware/efi/efivars # df /sys/firmware/efi/efivars
df: no file systems processed
ab85m:/sys/firmware/efi/efivars #
I can only guess , but are you dual booting with Windows?
Maybe this only applies to dualboot machines?
Dual means exactly 2. Multboot means any number greater than 1, thus subsumes dual. I multiboot all, but none with UEFI have any version of Windows.
Problem found. Command inexplicably only works as non-root user:
test@ab85m:~> df /sys/firmware/efi/efivars/
Filesystem 1K-blocks Used Available Use% Mounted on
efivarfs 128 103 21 84% /sys/firmware/efi/efivars
test@ab85m:~>
I tested and found same limitation in Leap, Fedora and Debian, on 3 different PCs.
I cannot reproduce it.