How to boot to EFI shell?
-
I need to boot to the EFI shell command prompt, how is that done when there is no option like under linux
-
That's a very hardware/BIOS specific question.
Most devices will boot to an EFI shell if there is nothing else to boot. There may be an option in the boot device menu. Some BIOSes do not include an accessible EFI shell at all.
Steve
-
@gwaitsi
That's determined by the mom board, not the OS. You likely have to press certain keys during boot up, before control is passed to the OS.
-
@stephenw10 it is a new quotom box with UEFI bios. There is a bios menu option to boot to the EFI shell on the local disk, but always says shell.efi not found.
pfsense is installed in uefi mode and boots.
I tried with an ubuntu usb prepared as fat32 with the shell.efi and bootx64.efi but it just boots into the grub loader and not the efi shell
-
So maybe the BIOS doesn't include a shell to boot to. Have you asked Qotom?
-
@stephenw10 it's not included in the bios. the option is to boot to shell on the file system.
I have the shellx64.efi on my j1900 (in production).how can i mount the EFI partition on the live system, so I can ftp the file off.
I figured out, the system was correctly booting to the efi grub, but that is not the shell.
i believe i need to copy the shellx64.efi to the root of the EFI partition and that should allow booting to the shell -
Well you can do exactly that, mount the UEFI partition, which is FAT32, and copy files to it.
Why do you want to do that though?
Steve
-
@stephenw10 i want to update the smbios and the dos version of amiedit doesn't work with this version of bios. so i need to use the efi version
-
Mmm, can't you just boot it from USB then?
-
@stephenw10 can't seem to get it to work
-
Ok, well I would install something else to get access first then. You don't need to be running pfSense or even FreeBSD to update the BIOS.
Steve
-
I have a Qotom mini PC too. I have to press F11 very soon after rebooting to get into the BIOS shell.
-
@jknott you mean the bios setup, or the efi shell - that is not the same
-
@stephenw10 smbios / DMI settings are not updated via the bios, they are updated via the AMI DMIEDIT tools. Aptio <= 5.6.5 worked with the dos version of the tools. my new box has 5.12 and doesn't work any more with dos.
tried the linux, but can't get paste EFI boot into grub loader. which means i need to load the shell.efi so i can run it is UEFI shell, but can't get that booting either -
Right, so if your BIOS does not include a UEFI shell then you need to boot something that does, which isn't pfSense.
I would be looking for a USB image to do it.What are you trying to change anyway? Is it passing a bad value to pfSense?
Steve
