OsIndications variable disappeared after writing to it

[Lancia-Greggori]

Hello everyone.

I listed all the available variables using efivar -l and found the OsIndications variable.

I wanted to write a 1 to it so my computer would reboot to the UEFI firmware menu on the next restart.

As a test drive, I tried writing zeros to the file representing the variable in /sys/firmware/efi/efivars/ using the command printf '\x00\x00\x00\x00', however after that, the file disappeared, along with the variable when I execute efivar -l; but the OsIndicationsSupported variable and file still exist.

I wanted to know if there is a way of getting that variable back, or if this is an issue with my UEFI firmware?