PXEBoot efi

English Network/Internet
#1

[LEFT] Hi,
We have been using BIOS PXEBoot for awhile now to backup and restore disk images with Clonezilla.
New machines require efi/ufi and though I can get it to boot I can’t figure out the Cloezilla commmand line.

This works from /pxelinux.cfg/default:

label Create Image
MENU LABEL Clonezilla Backup to Image
KERNEL /images/clonezilla/vmlinuz
INITRD /images/clonezilla/initrd.img
APPEND boot=live config union=overlay nolocales locales=en_US.UTF-8 keyboard-layouts=“NONE” noprompt ocs_daemonon=“ssh” ocs_live_batch=“n” ocs_live_extra_param="" ocs_prerun=“mount -t cifs //pxeboot/$IMG /home/partimag -o user=Admin,password=password” ocs_live_run="/usr/sbin/ocs-sr -q2 -c -j2 -z1p -i 4096 -sfsck -senc -p choose savedisk ask_user ask_user" vga=normal i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=1 fetch=tftp://pxeboot/$IMG/clonezilla/filesystem.squashfs

If I copy this to grub it can’t find append:

menuentry “Clonezilla Backup to an Image” {
set gfxpayload=keep
linuxefi /$IMG/clonezilla/vmlinuz
initrdefi /$IMG/clonezilla/initrd.img
append boot=live config union=overlay nolocales locales=en_US.UTF-8 keyboard-layouts=“NONE” noprompt ocs_daemonon=“ssh” ocs_live_batch=“n” ocs_live_extra_param="" ocs_prerun=“mount -t cifs //pxeboot/$IMG /home/partimag -o user=Admin,password=password” ocs_live_run="/usr/sbin/ocs-sr -q2 -c -j2 -z1p -i 4096 -sfsck -senc -p choose savedisk ask_user ask_user" vga=normal i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=1 fetch=tftp://pxeboot/$IMG/clonezilla/filesystem.squashfs
}

What am I missing?

Thanks

             [/LEFT]
#2

grub does not have “append” command, kernel parameters go on linuxefi line.

#3

I stumbled across the answer just after I posted this. It turns out that:

linuxefi /$IMG/clonezilla/vmlinuz
APPEND boot=live config union=overlay nolocales locales=en_US.UTF-8 keyboard-layouts=“NONE” noprompt ocs_daemonon=“ssh” ocs_live_batch=“n” ocs_live_extra_param="" ocs_prerun=“mount -t cifs //pxeboot/$IMG /home/partimag -o user=Admin,password=password” ocs_live_run="/usr/sbin/ocs-sr -q2 -c -j2 -z1p -i 4096 -sfsck -senc -p choose savedisk ask_user ask_user" vga=normal i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=1 fetch=tftp://pxeboot/$IMG/clonezilla/filesystem.squashfs

Becomes:
linuxefi /$IMG/clonezilla/vmlinuz boot=live config union=overlay nolocales locales=en_US.UTF-8 keyboard-layouts=“NONE” noprompt ocs_daemonon=“ssh” ocs_live_batch=“n” ocs_live_extra_param="" ocs_prerun=“mount -t cifs //pxeboot/$IMG /home/partimag -o user=Admin,password=password” ocs_live_run="/usr/sbin/ocs-sr -q2 -c -j2 -z1p -i 4096 -sfsck -senc -p choose savedisk ask_user ask_user" vga=normal i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=1 fetch=tftp://pxeboot/$IMG/clonezilla/filesystem.squashfs

So thanks.

#4

I hope the title includes this question also:

I am trying to boot from an ISO. When I choose this menu item:
menuentry “Clonezilla Live 64” {
set gfxpayload=text
set ISO=’/images/clonezilla/clonezilla-live-2.7.0-10-amd64.iso’
set DEV="${devroot}${ISO}"
export ISO
loopback loop “(${root})${ISO}”
linux ‘(loop)/live/vmlinuz’ boot=‘live’ union=‘overlay’ username=‘user’ config components noswap edd=‘on’ nomodeset nodmraid noeject locales=’’ keyboard-layouts=’’ ocs_live_run=‘ocs-live-general’ ocs_live_extra_param=’’ ocs_live_batch=‘no’ ip=’’ acpi='off’irqpoll noapic noapm nodma nomce nolapic nosmp nomodeset nosplash findiso="${ISO}"
initrd ‘(loop)/live/initrd.img’
loopback --delete loop
}

I get:
can’t find command ‘loopback’
disk ‘loop’ not found
you need to load the kernel first.
can’t find command ‘loopback’

So where does ‘loopback’ come from?
Thanks again.

#5

Post computer text in tags [noparse]

...

[/noparse], it is hard to read your posts.

#6

You mean like this?


menuentry "Clonezilla Live 64" {
   set gfxpayload=text
   set ISO='/images/clonezilla/clonezilla-live-2.7.0-10-amd64.iso'
   set DEV="${devroot}${ISO}"
   export ISO
   loopback loop "(${root})${ISO}"
   linux '(loop)/live/vmlinuz' boot='live' union='overlay'  username='user' config components noswap edd='on' nomodeset nodmraid  noeject locales='' keyboard-layouts='' ocs_live_run='ocs-live-general' ocs_live_extra_param='' ocs_live_batch='no' ip='' acpi='off'irqpoll  noapic noapm nodma nomce nolapic nosmp nomodeset nosplash  findiso="${ISO}"
   initrd '(loop)/live/initrd.img'
   loopback --delete loop
}

So where does ‘loopback’ come from?

#7

Most grub commands are implemented as loadable modules which are loaded from $prefix location. So you either need to include necessary modules into binary loaded by PXE or make sure they are present on boot server. Actually grub2-mknetdir should prepare directory.

If secure boot is active loading of external modules is disabled and you need to include everything in main binary.

#8

grub2-mknetdir helped.

Ok. We made it to the next set of errors:

error: …/…/grub-core/net/tftp.c:254:File not found.
error: …/…/grub-core/net/net.c:1475:disk ‘loop’ not found.
error: …/…/grub-core/loader/i386/efi/linux.c:207:You need to load the kernel first.

I can’t find grub-core.
Thanks

#9

So now it apparently fails to find your ISO image.

#10

So it looks like I was using the variables wrong.
I had:


        set ISO='$IMG/clonezilla/clonezilla-live-2.7.0-10-amd64.iso'

instead of:


        set ISO="${IMG}/clonezilla/clonezilla-live-2.7.0-10-amd64.iso"

I’m back in business.
Thanks Guys.