Ygtjki

I installed my server with Debian 9 and Grub with a LABEL. In my /etc/fstab I see My label as followed:

LABEL=root / ext4 errors=remount-ro 0 1
/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0

But I see this in my /boot/grub/grub.cfg

linux /boot/vmlinuz-4.9.0-3-amd64 root=**/dev/sda1** ro single

How can I change the device to my Label ?

Update:
/boot/grub/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 ###
if [ -s $prefix/grubenv ]; then
 set have_grubenv=true
 load_env
fi
if [ "$next_entry" ] ; then
 set default="$next_entry"
 set next_entry=
 save_env next_entry
 set boot_once=true
else
 set default="0"
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


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 0a0edac0-c3bd-40bf-b286-30b0d587c949
else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
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=menu
 set timeout=5
 # Fallback normal timeout code in case the timeout_style feature is
 # unavailable.
 else
 set timeout=5
 fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode 
 set gfxpayload="$1"

set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 load_video
 insmod gzio
 if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
 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 0a0edac0-c3bd-40bf-b286-30b0d587c949
 else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
 fi
 echo 'Loading Linux 4.9.0-6-amd64 ...'
 linux /boot/vmlinuz-4.9.0-6-amd64 root=/dev/sda1 ro quiet
 echo 'Loading initial ramdisk ...'
 initrd /boot/initrd.img-4.9.0-6-amd64

submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 menuentry 'Debian GNU/Linux, with Linux 4.9.0-6-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.9.0-6-amd64-advanced-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 load_video
 insmod gzio
 if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
 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 0a0edac0-c3bd-40bf-b286-30b0d587c949
 else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
 fi
 echo 'Loading Linux 4.9.0-6-amd64 ...'
 linux /boot/vmlinuz-4.9.0-6-amd64 root=/dev/sda1 ro quiet
 echo 'Loading initial ramdisk ...'
 initrd /boot/initrd.img-4.9.0-6-amd64
 
 menuentry 'Debian GNU/Linux, with Linux 4.9.0-6-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.9.0-6-amd64-recovery-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 load_video
 insmod gzio
 if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
 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 0a0edac0-c3bd-40bf-b286-30b0d587c949
 else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
 fi
 echo 'Loading Linux 4.9.0-6-amd64 ...'
 linux /boot/vmlinuz-4.9.0-6-amd64 root=/dev/sda1 ro single
 echo 'Loading initial ramdisk ...'
 initrd /boot/initrd.img-4.9.0-6-amd64
 
 menuentry 'Debian GNU/Linux, with Linux 4.9.0-3-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.9.0-3-amd64-advanced-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 load_video
 insmod gzio
 if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
 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 0a0edac0-c3bd-40bf-b286-30b0d587c949
 else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
 fi
 echo 'Loading Linux 4.9.0-3-amd64 ...'
 linux /boot/vmlinuz-4.9.0-3-amd64 root=/dev/sda1 ro quiet
 echo 'Loading initial ramdisk ...'
 initrd /boot/initrd.img-4.9.0-3-amd64
 
 menuentry 'Debian GNU/Linux, with Linux 4.9.0-3-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.9.0-3-amd64-recovery-0a0edac0-c3bd-40bf-b286-30b0d587c949' 
 load_video
 insmod gzio
 if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
 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 0a0edac0-c3bd-40bf-b286-30b0d587c949
 else
 search --no-floppy --fs-uuid --set=root 0a0edac0-c3bd-40bf-b286-30b0d587c949
 fi
 echo 'Loading Linux 4.9.0-3-amd64 ...'
 linux /boot/vmlinuz-4.9.0-3-amd64 root=/dev/sda1 ro single
 echo 'Loading initial ramdisk ...'
 initrd /boot/initrd.img-4.9.0-3-amd64
 


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

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

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

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###

### 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 ###

Use blkid or e2label /dev/sda1 to get the partition label then replace it in your fstab, the root option in grub.cfg file is different, it is used to set the root file system.

Add the following lines to your /etc/defaut/grub :

GRUB_DISABLE_LINUX_UUID=true
GRUB_ENABLE_LINUX_LABEL=true

Then edit the 2 lines in your /boot/grub/grub.cfg as follows:

search --no-floppy --label root --set=root
linux /boot/vmlinuz-4.9.0-3-amd64 root=LABEL=root ro single

Debian: Labels

manpages: e2label