Windows 10 в dualboot

root@debian:~# lsblk 
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0  51.2G  0 disk 
├─sda1   8:1    0   350M  0 part 
└─sda2   8:2    0  50.9G  0 part 
sdb      8:16   0 149.1G  0 disk 
├─sdb1   8:17   0   953M  0 part 
├─sdb2   8:18   0     1K  0 part 
├─sdb5   8:21   0   9.3G  0 part /home
└─sdb6   8:22   0    41G  0 part /

blkid /dev/sda1
/dev/sda1: LABEL="System Reserved" UUID="E2A83A7CA83A4EF3" TYPE="ntfs" PARTUUID="000cea24-01"

root@debian:~# cat /etc/default/grub | grep PROBER
GRUB_DISABLE_OS_PROBER=true

vi /etc/grub.d/40_custom

root@debian:~# update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.16.0-4-amd64
Found initrd image: /boot/initrd.img-3.16.0-4-amd64
done


cat /boot/grub/grub.cfg
.....
### 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.

menuentry "Windows 10" --class windows --class os {
   insmod ntfs
   search --no-floppy --set=root --fs-uuid E2A83A7CA83A4EF3
   ntldr /bootmgr
}
......

uname -a
Linux debian 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt9-3~deb8u1 (2015-04-24) x86_64 GNU/Linux