Running sudo update-grub
Produces this result:
Generating grub configuration file ... Found background: /usr/share/backgrounds/splash.tga WARNING: Failed to connect to lvmetad. Falling back to device scanning. Found Windows Vista (loader) on /dev/sda1 Found Windows Vista (loader) on /dev/sda2 done
The patch below fixes the problem as it enables the -a flag for grep and and adds in the entry for Windows 10.
--- a/20microsoft +++ b/usr/lib/os-probes/mounted/20microsoft @@ -31,19 +31,21 @@ if item_in_dir -q bootmgr "$2"; then for boot in $(item_in_dir boot "$2"); do bcd=$(item_in_dir bcd "$2/$boot") if [ -n "$bcd" ]; then - if grep -qs "W.i.n.d.o.w.s. .8" "$2/$boot/$bcd"; then + if grep -aqs "W.i.n.d.o.w.s. .1.0" "$2/$boot/$bcd"; then + long="Windows 10 (loader)" + elif grep -aqs "W.i.n.d.o.w.s. .8" "$2/$boot/$bcd"; then long="Windows 8 (loader)" - elif grep -qs "W.i.n.d.o.w.s. .7" "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .7" "$2/$boot/$bcd"; then long="Windows 7 (loader)" - elif grep -qs "W.i.n.d.o.w.s. .V.i.s.t.a" "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .V.i.s.t.a" "$2/$boot/$bcd"; then long="Windows Vista (loader)" - elif grep -qs "W.i.n.d.o.w.s. .S.e.r.v.e.r. .2.0.0.8. .R.2." "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .S.e.r.v.e.r. .2.0.0.8. .R.2." "$2/$boot/$bcd"; then long="Windows Server 2008 R2 (loader)" - elif grep -qs "W.i.n.d.o.w.s. .S.e.r.v.e.r. .2.0.0.8." "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .S.e.r.v.e.r. .2.0.0.8." "$2/$boot/$bcd"; then long="Windows Server 2008 (loader)" - elif grep -qs "W.i.n.d.o.w.s. .R.e.c.o.v.e.r.y. .E.n.v.i.r.o.n.m.e.n.t" "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .R.e.c.o.v.e.r.y. .E.n.v.i.r.o.n.m.e.n.t" "$2/$boot/$bcd"; then long="Windows Recovery Environment (loader)" - elif grep -qs "W.i.n.d.o.w.s. .S.e.t.u.p" "$2/$boot/$bcd"; then + elif grep -aqs "W.i.n.d.o.w.s. .S.e.t.u.p" "$2/$boot/$bcd"; then long="Windows Recovery Environment (loader)" else long="Windows Vista (loader)"
Now running sudo update-grub
Produces
Generating grub configuration file ... Found background: /usr/share/backgrounds/splash.tga WARNING: Failed to connect to lvmetad. Falling back to device scanning. Found Windows Recovery Environment (loader) on /dev/sda1 Found Windows 10 (loader) on /dev/sda2 done
Yay, its fixed.