Boot DSL on UEFI system

[KarsteinE]

I want too run dsl alongside Windows and Wubuntu linux on an UEFI based laptop, how can I make the .iso bootable on an UEFI system? Or is there another way around? I have tried installing it in BIOS mode and that went fine. When I switch to UEFI the grub config in Wubuntu can see the dsl installation but when I include it in grub and try to boot it it just says "error: you need to load the kernel first". TIA

Karstein

[Yan]

If you used UEFI for Windows and Ubuntu (I assume you mean Ubuntu), then you should already have the required EFI partition.

Did you boot into Ubuntu and then run grub-update and install-grub? But first make the necessary changes to /etc/default/grub.

[KarsteinE]

If you used UEFI for Windows and Ubuntu (I assume you mean Ubuntu), then you should already have the required EFI partition.

Did you boot into Ubuntu and then run grub-update and install-grub? But first make the necessary changes to /etc/default/grub.

After booting into wubuntu (it is Windows Ubuntu, formerly known as WindowsFx or LinuxFx) I used grub-customizer to update grub. What changes to /etc/default/grub were you thinking of? I have the impression that grub-customizer makes the required changes.

Edit: Here's my /boot/grub/grub.cfg As you can see dsl is there but if I choose it i get a error sauing "<You need to load the kernel first"

Code:

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${initrdfail}" = 2 ]; then
   set initrdfail=
elif [ "${initrdfail}" = 1 ]; then
   set next_entry="${prev_entry}"
   set prev_entry=
   save_env prev_entry
   if [ "${next_entry}" ]; then
      set initrdfail=2
   fi
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="${saved_entry}"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function initrdfail {
    if [ -n "${have_grubenv}" ]; then if [ -n "${partuuid}" ]; then
      if [ -z "${initrdfail}" ]; then
        set initrdfail=1
        if [ -n "${boot_once}" ]; then
          set prev_entry="${default}"
          save_env prev_entry
        fi
      fi
      save_env initrdfail
    fi; fi
}
function recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
set root='hd1,gpt3'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
else
  search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
fi
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=hidden
    set timeout=10
  # Fallback hidden-timeout code in case the timeout_style feature is
  # unavailable.
  elif sleep --interruptible 10 ; then
    set timeout=0
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
    set gfxpayload="${1}"
    if [ "${1}" = "keep" ]; then
        set vt_handoff=vt.handoff=7
    else
        set vt_handoff=
    fi
}
if [ "${recordfail}" != 1 ]; then
  if [ -e ${prefix}/gfxblacklist.txt ]; then
    if hwmatch ${prefix}/gfxblacklist.txt 3; then
      if [ ${match} = 0 ]; then
        set linux_gfx_mode=keep
      else
        set linux_gfx_mode=text
      fi
    else
      set linux_gfx_mode=text
    fi
  else
    set linux_gfx_mode=keep
  fi
else
  set linux_gfx_mode=text
fi
export linux_gfx_mode
menuentry 'Windows Ubuntu 11 Cinnamon' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
    recordfail
    savedefault
    load_video
    gfxmode $linux_gfx_mode
    insmod gzio
    if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
    insmod part_gpt
    insmod ext2
    set root='hd1,gpt3'
    if [ x$feature_platform_search_hint = xy ]; then
      search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
    else
      search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
    fi
    linux    /boot/vmlinuz-5.15.0-94-generic root=UUID=0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0 ro  quiet splash $vt_handoff
    initrd    /boot/initrd.img-5.15.0-94-generic
}
submenu 'Advanced options for Windows Ubuntu 11 Cinnamon' $menuentry_id_option 'gnulinux-advanced-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
    menuentry 'Windows Ubuntu 11 Cinnamon, with Linux 5.15.0-94-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.15.0-94-generic-advanced-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
        recordfail
    savedefault
        load_video
        gfxmode $linux_gfx_mode
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt3'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        else
          search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        fi
        echo    'Loading Linux 5.15.0-94-generic ...'
        linux    /boot/vmlinuz-5.15.0-94-generic root=UUID=0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0 ro  quiet splash $vt_handoff
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-5.15.0-94-generic
    }
    menuentry 'Windows Ubuntu 11 Cinnamon, with Linux 5.15.0-94-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.15.0-94-generic-recovery-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
        recordfail
        load_video
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt3'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        else
          search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        fi
        echo    'Loading Linux 5.15.0-94-generic ...'
        linux    /boot/vmlinuz-5.15.0-94-generic root=UUID=0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0 ro recovery nomodeset dis_ucode_ldr
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-5.15.0-94-generic
    }
    menuentry 'Windows Ubuntu 11 Cinnamon, with Linux 5.15.0-91-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.15.0-91-generic-advanced-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
        recordfail
    savedefault
        load_video
        gfxmode $linux_gfx_mode
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt3'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        else
          search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        fi
        echo    'Loading Linux 5.15.0-91-generic ...'
        linux    /boot/vmlinuz-5.15.0-91-generic root=UUID=0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0 ro  quiet splash $vt_handoff
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-5.15.0-91-generic
    }
    menuentry 'Windows Ubuntu 11 Cinnamon, with Linux 5.15.0-91-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.15.0-91-generic-recovery-0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0' {
        recordfail
        load_video
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt3'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt3 --hint-efi=hd1,gpt3 --hint-baremetal=ahci1,gpt3  0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        else
          search --no-floppy --fs-uuid --set=root 0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0
        fi
        echo    'Loading Linux 5.15.0-91-generic ...'
        linux    /boot/vmlinuz-5.15.0-91-generic root=UUID=0c101bb8-fcc4-4a59-9dd4-8a83e1ce12a0 ro recovery nomodeset dis_ucode_ldr
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-5.15.0-91-generic
    }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/10_linux_zfs ###
### END /etc/grub.d/10_linux_zfs ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows Boot Manager (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-efi-1B00-1D20' {
    savedefault
    insmod part_gpt
    insmod fat
    set root='hd0,gpt2'
    if [ x$feature_platform_search_hint = xy ]; then
      search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2  1B00-1D20
    else
      search --no-floppy --fs-uuid --set=root 1B00-1D20
    fi
    chainloader /efi/Microsoft/Boot/bootmgfw.efi
}
menuentry 'DSL2024 (alpha) (on /dev/sdb1)' --class dsl --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-5b91a600-9118-4353-af0a-3a75cca1df65' {
    savedefault
    insmod part_gpt
    insmod ext2
    set root='hd1,gpt1'
    if [ x$feature_platform_search_hint = xy ]; then
      search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt1 --hint-efi=hd1,gpt1 --hint-baremetal=ahci1,gpt1  5b91a600-9118-4353-af0a-3a75cca1df65
    else
      search --no-floppy --fs-uuid --set=root 5b91a600-9118-4353-af0a-3a75cca1df65
    fi
    linux /boot/vmlinuz-5.10.188-antix.1-486-smp root=UUID=5b91a600-9118-4353-af0a-3a75cca1df65 ro quiet selinux=0
    initrd /boot/initrd.img-5.10.188-antix.1-486-smp
}
submenu 'Advanced options for DSL2024 (alpha) (on /dev/sdb1)' $menuentry_id_option 'osprober-gnulinux-advanced-5b91a600-9118-4353-af0a-3a75cca1df65' {
    menuentry 'Damn Small Linux 2024 Alpha (on /dev/sdb1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-5.10.188-antix.1-486-smp--5b91a600-9118-4353-af0a-3a75cca1df65' {
        savedefault
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt1 --hint-efi=hd1,gpt1 --hint-baremetal=ahci1,gpt1  5b91a600-9118-4353-af0a-3a75cca1df65
        else
          search --no-floppy --fs-uuid --set=root 5b91a600-9118-4353-af0a-3a75cca1df65
        fi
        linux /boot/vmlinuz-5.10.188-antix.1-486-smp root=UUID=5b91a600-9118-4353-af0a-3a75cca1df65 ro quiet selinux=0
        initrd /boot/initrd.img-5.10.188-antix.1-486-smp
    }
    menuentry 'Damn Small Linux 2024 Alpha, with Linux 5.10.188-antix.1-486-smp (on /dev/sdb1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-5.10.188-antix.1-486-smp--5b91a600-9118-4353-af0a-3a75cca1df65' {
        savedefault
        insmod part_gpt
        insmod ext2
        set root='hd1,gpt1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt1 --hint-efi=hd1,gpt1 --hint-baremetal=ahci1,gpt1  5b91a600-9118-4353-af0a-3a75cca1df65
        else
          search --no-floppy --fs-uuid --set=root 5b91a600-9118-4353-af0a-3a75cca1df65
        fi
        linux /boot/vmlinuz-5.10.188-antix.1-486-smp root=UUID=5b91a600-9118-4353-af0a-3a75cca1df65 ro quiet selinux=0
        initrd /boot/initrd.img-5.10.188-antix.1-486-smp
    }
}

set timeout_style=menu
if [ "${timeout}" = 0 ]; then
  set timeout=10
fi
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
    fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/35_fwupd ###
### END /etc/grub.d/35_fwupd ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###

[Yan]

I'm talking about  /etc/default/grub , not /boot/grub/grub.cfg . There's a link in my previous post; if you click on /etc/default/grub , you'll be shown a page that explains the change to be made.

I don't know anything about grub-customizer . It seems to be specific to Ubuntu.

[KarsteinE]

I'm talking about  /etc/default/grub , not /boot/grub/grub.cfg . There's a link in my previous post; if you click on /etc/default/grub , you'll be shown a page that explains the change to be made.

I don't know anything about grub-customizer . It seems to be specific to Ubuntu.

I knw you were talking about /etc/default/grub, I posted grub.cfg to show you that dsl IS in the grub menue, it woud not have been unless GRUB_DISABLE_OS_PROBER=false was already set.

To be sure I ran sudo update-grub and tried to boot again, same result it just says "You need to load the kernel first" when I select dsl from the grub menue. What can I do to make sure the kernel is loaded? Does the dsl kernel support 64 bit cpu? (AMD)

[Yan]

Is secure boot on? Try disabling it.

[KarsteinE]

Is secure boot on? Try disabling it.

Secure boot is disabled. It would not boot wubuntu at first so I disables it.