booting bootx64.efi, just shows filepath

[martiinz]

I followed https://www.memtest86.com/tech_configuring-grub.html, in the end when chainloading bootx64.efi, I just get a filepath. Do you have any Idea what that output means?

grub> insmod fat
grub> insmod part_gpt
grub> chainloader (hd0,gpt1)/efi/boot/bootx64.efi
/EndEntire
file path: /ACPI(a0341d0,0)/PCI(0,17)/UnknownMessaging(1a)/HD(1,800,7000,ef09d5
c7dc99cb49,2,2)/File(\efi\boot)/File(bootx64.efi)/EndEntire


It's a vfat partition:
bash> lsblk -fm
NAME FSTYPE LABEL MOUNTPOINT SIZE OWNER GROUP MODE
mmcblk1 3.6G admin disk brw-rw----
|-mmcblk1p1 vfat mygrub 14M admin disk brw-rw----
...


Thanks

[Oz (PassMark)]

It seems like you're trying to run boot commands directly via the grub CLI as opposed to saving the boot entry to the grub config, as the guide directs you to do?

Are you certain your efi boot partition is on hd0 gpt1? Can you please post the output of the $ df command?

Also tell us what Linux distro and version you are using, and whether it is 32 bit or 64 bit.

[martiinz]

It seems like you're trying to run boot commands directly via the grub CLI as opposed to saving the boot entry to the grub config, as the guide directs you to do?

Yes, but it's the same in a bootmenuentry

Are you certain your efi boot partition is on hd0 gpt1? Can you please post the output of the $ df command?

It's at least where I copied the memtest file. The Kernel image is on (hd0,gpt2), I copied the memtest file there as well, with the same result

grub> ls (hd0,gpt1)/efi/boot
bootx64.efi grub.cfg fonts/


bash > df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 3451024 1494604 1761400 46% /
devtmpfs 447344 0 447344 0% /dev
tmpfs 449720 300 449420 0% /run
tmpfs 233856 760 233096 0% /var/volatile
/dev/mmcblk1p2 170439 78196 79628 50% /boot
/dev/mmcblk1p3 13847 2886 9886 23% /etc/custom/share
/dev/mmcblk1p1 14290 9578 4712 67%

Also tell us what Linux distro and version you are using, and whether it is 32 bit or 64 bit.

It's an 64bit yocto based embedded distro

bash > uname -m
x86_64

bash > uname -a
Linux myDistro 4.14.146-rt67-cg-8.5.0f0-x64-32 #1 SMP PREEMPT RT Tue Aug 25 01:58:07 UTC 2020 x86_64 GNU/Linux

[Oz (PassMark)]

Are you trying to run this on an embedded device, with external storage? Is this a UEFI system, that contains an EFI boot partition? If not, MemTest won't work - you need a partition of EFI type that will be used to chainload MemTest.

Yes, but it's the same in a bootmenuentry

I've found some minor differences in the past, especially with syntax. I'd recommend you try editing the grub file, just to rule this out as a possible cause.

It's at least where I copied the memtest file. The Kernel image is on (hd0,gpt2), I copied the memtest file there as well, with the same result

grub> ls (hd0,gpt1)/efi/boot
bootx64.efi grub.cfg fonts/

bash > df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 3451024 1494604 1761400 46% /
devtmpfs 447344 0 447344 0% /dev
tmpfs 449720 300 449420 0% /run
tmpfs 233856 760 233096 0% /var/volatile
/dev/mmcblk1p2 170439 78196 79628 50% /boot
/dev/mmcblk1p3 13847 2886 9886 23% /etc/custom/share
/dev/mmcblk1p1 14290 9578 4712 67%

Try to see if you have a /boot/efi partition located on your system somewhere.

By the way: I don't think /dev/mmcblk1p2 corresponds to hd0/gpt1 or even gpt2 for that matter, you may want to check this.

[martiinz]

Are you trying to run this on an embedded device, with external storage? Is this a UEFI system, that contains an EFI boot partition? If not, MemTest won't work - you need a partition of EFI type that will be used to chainload MemTest.

Yes it an EFI Type.
The (hd0,gpt1) corresponds to /dev/mmcblk1p1, where I've copied the memtest file

bash> fdisk -l /dev/mmcblk1
Disk /dev/mmcblk1: 3.6 GiB, 3875536896 bytes, 7569408 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 2720433F-CF21-45B4-9D1C-1A84F209F63F

Device Start End Sectors Size Type
/dev/mmcblk1p1   2048   30719    28672   14M EFI System
/dev/mmcblk1p2  30720  391167   360448  176M Linux filesystem
/dev/mmcblk1p3 391168  421887    30720   15M Linux filesystem
/dev/mmcblk1p4 421888 7567359  7145472  3.4G Linux filesystem

I've found some minor differences in the past, especially with syntax. I'd recommend you try editing the grub file, just to rule this out as a possible cause.

Ok, good to know. I've tried those steps already in a menuentry with the same result