Independent of the shorthand notation:
Isn’t the [ test command deprecated in favor of the [[ … ]] test construct?
No, not really. [[ is a shell builtin, whereas [ is available both as a shell builtin (in bash and most other POSIX shells) and as an on-disk executable. And, it’s required by the POSIX standard. 
1 Like
The single bracketted construct is fine in this instance when we’re only expressing basic conditionals; as for it being deprecated, I’m unaware of that or why it should be so across the board.
If I recall, one of the main differences with the second construct is that it allows pattern matching, whereas the single bracketted does not.
I think the former tends to be more portable, in any case.
2 Likes
Thank you for explaining the command!
We should now come back to the main problem.
Maybe it is important: Yesterday I wasn’t able to boot into Windows. The system rebooted every time I had chosen Windows in Grub. So I tried the boot options in Grub. There were a few entries I could not interpret. I have tried one and Windows booted. Is it possible that Grub tries to start Windows with wrong parameters?
Not normally, because grub does not actually boot Windows — it simply calls the Windows boot loader.
What is the contents of your /boot/grub/grub.cfg? (Make sure to enclose it in triple backticks or use a code block, as it will be a few pages.)
This file is generated with update-grub, you don’t edit it. But looking at it helps troubleshoot booting issues.
The output of lsblk -f will also help, as it will tell us if the grub config is trying to boot the right place or not.
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I’m only looking at this abstractedly, however it’s more likely that you have somehow acquired a “zombie” UEFI boot entry, which may have previously referenced the Windows boot loader, but does no more.
You might be able to check that and remove any non functioning entries with EasyUEFI for Windows (there is a free version, though you might have to look for it).
grub.cfg:
### 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="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="${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="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$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
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
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=de_AT
insmod gettext
fi
terminal_input console
terminal_output gfxterm
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
insmod gfxmenu
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_12.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_14.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_16.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_24.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_48.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_bold_16.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/dejavu_sans_mono_12.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-12.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-14.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-16.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-18.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-b12.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-b14.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-b16.pf2
loadfont ($root)/usr/share/grub/themes/manjaro/terminus-b18.pf2
insmod png
set theme=($root)/usr/share/grub/themes/manjaro/theme.txt
export theme
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/10_linux ###
menuentry 'Manjaro Linux' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
savedefault
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/vmlinuz-6.12-x86_64 root=UUID=7577eecb-23f7-4a07-8eac-a01a3d8d9240 rw quiet splash resume=UUID=8708d9e9-4e5b-490b-b93e-465abbd4a30a udev.log_priority=3
initrd /boot/intel-ucode.img /boot/amd-ucode.img /boot/initramfs-6.12-x86_64.img
}
submenu 'Erweiterte Optionen für Manjaro Linux' $menuentry_id_option 'gnulinux-advanced-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
menuentry 'Manjaro Linux (Kernel: 6.12.48-1-MANJARO x64)' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.12.48-1-MANJARO x64-advanced-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
savedefault
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/vmlinuz-6.12-x86_64 root=UUID=7577eecb-23f7-4a07-8eac-a01a3d8d9240 rw quiet splash resume=UUID=8708d9e9-4e5b-490b-b93e-465abbd4a30a udev.log_priority=3
initrd /boot/intel-ucode.img /boot/amd-ucode.img /boot/initramfs-6.12-x86_64.img
}
menuentry 'Manjaro Linux (Kernel: 6.12.48-1-MANJARO x64 - fallback initramfs)' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.12.48-1-MANJARO x64-fallback-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/vmlinuz-6.12-x86_64 root=UUID=7577eecb-23f7-4a07-8eac-a01a3d8d9240 rw quiet splash resume=UUID=8708d9e9-4e5b-490b-b93e-465abbd4a30a udev.log_priority=3
initrd /boot/initramfs-6.12-x86_64-fallback.img
}
menuentry 'Manjaro Linux (Kernel: 5.10.244-1-MANJARO x64)' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.10.244-1-MANJARO x64-advanced-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
savedefault
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/vmlinuz-5.10-x86_64 root=UUID=7577eecb-23f7-4a07-8eac-a01a3d8d9240 rw quiet splash resume=UUID=8708d9e9-4e5b-490b-b93e-465abbd4a30a udev.log_priority=3
initrd /boot/intel-ucode.img /boot/amd-ucode.img /boot/initramfs-5.10-x86_64.img
}
menuentry 'Manjaro Linux (Kernel: 5.10.244-1-MANJARO x64 - fallback initramfs)' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.10.244-1-MANJARO x64-fallback-7577eecb-23f7-4a07-8eac-a01a3d8d9240' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/vmlinuz-5.10-x86_64 root=UUID=7577eecb-23f7-4a07-8eac-a01a3d8d9240 rw quiet splash resume=UUID=8708d9e9-4e5b-490b-b93e-465abbd4a30a udev.log_priority=3
initrd /boot/initramfs-5.10-x86_64-fallback.img
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/15_ostree ###
### END /etc/grub.d/15_ostree ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
insmod bli
fi
### END /etc/grub.d/25_bli ###
### BEGIN /etc/grub.d/30_os-prober ###
# This menu entry is supported only on PC BIOS platforms.
if [ "$grub_platform" = "pc" ]; then
menuentry 'Windows 10 (auf /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-chain-707C2F317C2EF190' {
savedefault
insmod part_msdos
insmod ntfs
search --no-floppy --fs-uuid --set=root 707C2F317C2EF190
parttool ${root} hidden-
drivemap -s (hd0) ${root}
chainloader +1
}
fi
set timeout_style=menu
if [ "${timeout}" = 0 ]; then
set timeout=10
fi
### END /etc/grub.d/30_os-prober ###
### 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 $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###
### BEGIN /etc/grub.d/41_snapshots-btrfs ###
### END /etc/grub.d/41_snapshots-btrfs ###
### BEGIN /etc/grub.d/60_memtest86+ ###
if [ "${grub_platform}" == "pc" ]; then
menuentry "Memory Tester (memtest86+)" --class memtest86 --class gnu --class tool {
search --fs-uuid --no-floppy --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux16 /boot/memtest86+/memtest.bin
}
fi
### END /etc/grub.d/60_memtest86+ ###
### BEGIN /etc/grub.d/60_memtest86+-efi ###
if [ "${grub_platform}" == "efi" ]; then
menuentry "Memory Tester (memtest86+)" --class memtest86 --class gnu --class tool {
if loadfont unicode ; then
set gfxmode=1024x768,800x600,auto
set gfxpayload=800x600,1024x768
terminal_output gfxterm
fi
search --fs-uuid --no-floppy --set=root 7577eecb-23f7-4a07-8eac-a01a3d8d9240
linux /boot/memtest86+/memtest.efi
}
fi
### END /etc/grub.d/60_memtest86+-efi ###
lsblk -f:
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS sda ├─sda1 └─sda2 ntfs Volume C8465A87465A7662 sdb └─sdb1 ntfs Volume 3AFD0023FCFFD6DB sr0 nvme0n1 ├─nvme0n1p1 ntfs System-reserviert 707C2F317C2EF190 ├─nvme0n1p2 ntfs 886E30756E305E5E └─nvme0n1p3 ntfs 1CB842C1B84298E2 nvme1n1 ├─nvme1n1p1 ext4 1.0 7577eecb-23f7-4a07-8eac-a01a3d8d9240 1,3T 21% / └─nvme1n1p2 swap 1 swap 8708d9e9-4e5b-490b-b93e-465abbd4a30a [SWAP]
That can’t be right.
It is not a valid response to that command.
1 Like
My thoughts too. A C+P error maybe?
maybe - or just general lack of interest …
2 Likes
Try: sudo lsblk -f ?
I have not needed sudo for that command in a long time.
I can’t even get parted -l to display UUIDs. sudo fdisk -l is the alternative. (But it’s much more stuff we don’t need.)
It was formatted on one line. I think I deciphered it.
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
sda
├─sda1
└─sda2 ntfs Volume C8465A87465A7662
sdb
└─sdb1 ntfs Volume 3AFD0023FCFFD6DB
sr0
nvme0n1
├─nvme0n1p1 ntfs System-reserviert 707C2F317C2EF190
├─nvme0n1p2 ntfs 886E30756E305E5E
└─nvme0n1p3 ntfs 1CB842C1B84298E2
nvme1n1
├─nvme1n1p1 ext4 1.0 7577eecb-23f7-4a07-8eac-a01a3d8d9240 1,3T 21% /
└─nvme1n1p2 swap 1 swap 8708d9e9-4e5b-490b-b93e-465abbd4a30a [SWAP]
And I don’t even see an EFI partition.
1 Like
Well spotted; I didn’t think to mouse-over that and see the rest … 
you are a magician 
to the OP
@Umbra_noctis
check the result of what your post will actually look like and contain.
1 Like
Sorry! I failed to see that the formatting changed again.
Thank you for your kind help!
Could you paste the command so it’s formatted properly? (The UUIDs and everything are important to get exactly right.) So far, it looks like an unbootable system (at least by normal means that I know), and it’s obviously booting one OS.
If you can post: lsblk -f (again properly)
From the above command, you find the drive with the Windows installation you want. You can list its’ partitions with more detail in the following command.
(I’m guessing for you it is..)
sudo parted /dev/nvme0n1 print
The partition we are booting from is file system FAT32, with the flags boot, esp in the above command.
Note: We are just troubleshooting with these device names, it is already setup to boot UUIDs. (And you always should be.)
In your grub.cfg, your Windows portion looks like:
menuentry 'Windows 10 (auf /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-chain-707C2F317C2EF190' {
savedefault
insmod part_msdos
insmod ntfs
search --no-floppy --fs-uuid --set=root 707C2F317C2EF190
parttool ${root} hidden-
drivemap -s (hd0) ${root}
chainloader +1
}
It’s been a while since I time dual booted, but that looks all wrong. Plus, I used a FAT32 UUID that is much shorter, like: DEAD-BEEF.