No nst_grub.mbr


I have machine with vista and debian. Debian is in sda9. I have installed grub in boot sector of sda9. Back in easybcd, I selected grub and 0 drive and partition 9. I saved and wriiten to mbr. But when I booted to linux it says no \NST\nst_grub.mbr. Then with sysrescue cd I could make (dd if=/dev/sda9 of=nst_grub.mbr bs=512 count=1) nst_grub.mbr and copied it to \NST\ in C: drive. Then I could boot to linux. But why easybcd didn't make that file in \NST\ is a mystery. Am I wrong in doing something wron?
did the NST directory exist?
If for some reason it was deleted, EasyBCD will not recreate it. This is a known bug in EasyBCD 1.52, and is fixed in 1.6.