Mention bootctl in error message if ESP isn't found

[pikrzysztof]

I installed system76-firmware and wanted to use the cli:

 # system76-firmware-cli
system76-firmware: EFI mount point not found
 # system76-firmware-cli -h
system76-firmware: EFI mount point not found

But i have my ESP mounted!

# findmnt /boot/esp
TARGET    SOURCE         FSTYPE OPTIONS
/boot/esp /dev/nvme0n1p1 vfat   rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro
# ls /boot/esp
 EFI   efibootmgr  'System Volume Information'

In order to get the software working I had to strace the program, learn where does it look for ESP mount and symlink the expected path to the actual mountpoint.

Can you please make the error message more informative and make it not require ESP mounts for --help flag?

We can also provide it with --efi-mount flag which allows the user to specify where to look for ESP.

[jacobgkau]

system76-firmware attempts to get the ESP from bootctl before it tries any hard-coded paths:

system76-firmware/src/util.rs

Line 7 in 04e6154

pub fn get_efi_mnt() -> Option<String> {

What is the output of bootctl --print-esp-path on your system? Are you using Pop!_OS, or using system76-firmware on another distribution?

[pikrzysztof]

I'm using system76-firmware on my ArchLinux installation.

I ran bootctl --print-esp-path and learned it cannot detect my ESP. I fixed my mountpoints to work well with bootctl and now system76-firmware works OK. Thank you for your help.

Relying on bootctl is prefectly reasonable but please disclose it in error message.