sda1 /boot/grub/grub.cfg

grub.cfg

#
# 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 ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="old-mint-k5.8"
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 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
}

set menu_color_normal=light-gray/black
set menu_color_highlight=green/black

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  7f0432ae-9163-4e0f-9a32-4b996a360fb6
else
  search --no-floppy --fs-uuid --set=root 7f0432ae-9163-4e0f-9a32-4b996a360fb6
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_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/01_grub-customizer_menu_color_helper ###
### END /etc/grub.d/01_grub-customizer_menu_color_helper ###

### BEGIN /etc/grub.d/10_linux_proxy ###




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

### BEGIN /etc/grub.d/40_custom_proxy ###
menuentry "AP programming | Manjaro Linux" --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-7f0432ae-9163-4e0f-9a32-4b996a360fb6' {
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set=root 7f0432ae-9163-4e0f-9a32-4b996a360fb6
	linux /boot/vmlinuz-5.10-x86_64 root=UUID=7f0432ae-9163-4e0f-9a32-4b996a360fb6 rw
	initrd /boot/initramfs-5.10-x86_64.img
}
### END /etc/grub.d/40_custom_proxy ###

### BEGIN /etc/grub.d/41_linux_proxy ###
### END /etc/grub.d/41_linux_proxy ###

### BEGIN /etc/grub.d/42_linux_proxy ###
submenu "Advanced options for Manjaro Linux"{
menuentry "Manjaro Linux (Kernel: 5.10.34-1-MANJARO x64)" --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.10.34-1-MANJARO x64-advanced-7f0432ae-9163-4e0f-9a32-4b996a360fb6' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  7f0432ae-9163-4e0f-9a32-4b996a360fb6
		else
		  search --no-floppy --fs-uuid --set=root 7f0432ae-9163-4e0f-9a32-4b996a360fb6
		fi
		linux	/boot/vmlinuz-5.10-x86_64 root=UUID=7f0432ae-9163-4e0f-9a32-4b996a360fb6 rw  quiet apparmor=1 security=apparmor udev.log_priority=3
		initrd	/boot/amd-ucode.img /boot/initramfs-5.10-x86_64.img
}
menuentry "Manjaro Linux (Kernel: 5.10.34-1-MANJARO x64 - fallback initramfs)" --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.10.34-1-MANJARO x64-fallback-7f0432ae-9163-4e0f-9a32-4b996a360fb6' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  7f0432ae-9163-4e0f-9a32-4b996a360fb6
		else
		  search --no-floppy --fs-uuid --set=root 7f0432ae-9163-4e0f-9a32-4b996a360fb6
		fi
		linux	/boot/vmlinuz-5.10-x86_64 root=UUID=7f0432ae-9163-4e0f-9a32-4b996a360fb6 rw  quiet apparmor=1 security=apparmor udev.log_priority=3
		initrd	/boot/initramfs-5.10-x86_64-fallback.img
}
menuentry "Manjaro Linux (Kernel: 5.10.34-1-MANJARO x64 - recovery mode)" --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.10.34-1-MANJARO x64-recovery-7f0432ae-9163-4e0f-9a32-4b996a360fb6' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  7f0432ae-9163-4e0f-9a32-4b996a360fb6
		else
		  search --no-floppy --fs-uuid --set=root 7f0432ae-9163-4e0f-9a32-4b996a360fb6
		fi
		linux	/boot/vmlinuz-5.10-x86_64 root=UUID=7f0432ae-9163-4e0f-9a32-4b996a360fb6 rw single 
		initrd	/boot/initramfs-5.10-x86_64-fallback.img
}
}
### END /etc/grub.d/42_linux_proxy ###

### BEGIN /etc/grub.d/43_custom_proxy ###
menuentry "mint(20.1)-k5.8"{
	set root='UUID=3f3fce91-72f7-403f-90d2-aaaadc657cbc'
	search --no-floppy --fs-uuid --set=root 3f3fce91-72f7-403f-90d2-aaaadc657cbc
	linux /vmlinuz root=UUID=3f3fce91-72f7-403f-90d2-aaaadc657cbc rw quiet nosplash debug
	initrd /initrd.img
}
menuentry "mint20.1-k5.4"{
	set root='(hd0,msdos6)'
	search --no-floppy --fs-uuid --set=root 3f3fce91-72f7-403f-90d2-aaaadc657cbc
	linux /vmlinuz-5.4.0-72-generic root=UUID=3f3fce91-72f7-403f-90d2-aaaadc657cbc rw quiet nosplash debug
	initrd /initrd.img-5.4.0-72-generic
}
### END /etc/grub.d/43_custom_proxy ###

### BEGIN /etc/grub.d/44_linux_xen ###
### END /etc/grub.d/44_linux_xen ###

### BEGIN /etc/grub.d/45_os-prober ###
### END /etc/grub.d/45_os-prober ###

### BEGIN /etc/grub.d/46_uefi-firmware ###
### END /etc/grub.d/46_uefi-firmware ###

### BEGIN /etc/grub.d/47_custom_proxy ###

# 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/47_custom_proxy ###

### BEGIN /etc/grub.d/48_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/48_custom ###

### BEGIN /etc/grub.d/60_memtest86+ ###
if [ "${grub_platform}" == "pc" ]; then
    menuentry "Memory Tester (memtest86+)" --class memtest86 --class gnu --class tool {
        search --fs-uuid --no-floppy --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  7f0432ae-9163-4e0f-9a32-4b996a360fb6
        linux16 /boot/memtest86+/memtest.bin 
    }
fi
### END /etc/grub.d/60_memtest86+ ###

result of cat init

result of /init