sudo sh -x /usr/bin/os-prober
+ set -e
+ . /usr/share/os-prober/common.sh
+ cleanup_tmpdir=false
+ progname=
+ type mapdevfs
+ newns
+ [  ]
+ exec /usr/lib/os-prober/newns /usr/bin/os-prober
/dev/sda2@/EFI/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
/dev/sda9:Gentoo/Linux:Gentoo:linux