Public bug reported:
Steps:
1- I modify the grub file in the /etc/defaul/grub, the line:
#GRUB_DISABLE_OS_PROBER=true
GRUB_DISABLE_OS_PROBER=false
2- Run : sudo update-grub2 and return:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/kdump-tools.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.17.0-3-generic
Found initrd image: /boot/initrd.img-6.17.0-3-generic
Found memtest86+ 64bit EFI image: /boot/memtest86+x64.efi
Found memtest86+ 32bit EFI image: /boot/memtest86+ia32.efi
Found memtest86+ 64bit image: /boot/memtest86+x64.bin
Found memtest86+ 32bit image: /boot/memtest86+ia32.bin
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot
entries.
unshare: failed to execute /bin/true: Permission denied
/usr/bin/os-prober: 25: mktemp: Permission denied
/usr/bin/os-prober: 17: cannot create /dmraid-map: Permission denied
/usr/bin/os-prober: 18: rm: Permission denied
Adding boot menu entry for UEFI Firmware Settings ...
done
3- Check /bin/true with: ls -l /bin/true and return:
lrwxrwxrwx 1 root root 31 Sep 4 12:07 /bin/true ->
../lib/cargo/bin/coreutils/true
4- Consequence: It does not detect Windows system.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: coreutils 9.5-1ubuntu2+0.0.0~ubuntu22
ProcVersionSignature: Ubuntu 6.17.0-3.3-generic 6.17.0-rc3
Uname: Linux 6.17.0-3-generic x86_64
ApportVersion: 2.33.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 8 18:59:32 2025
InstallationDate: Installed on 2025-09-01 (7 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Daily amd64 (20250728)
PackageArchitecture: all
ProcEnviron:
LANG=es_ES.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: coreutils-from
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: coreutils-from (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
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https://bugs.launchpad.net/bugs/2122351
Title:
unshare: failed to execute /bin/true: Permission denied
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