I think me and system admins all around the world are very grateful to this forum, we owe our success in our career -I'm for sure- to the geniuses on this from like Steve(steve6375), Wonko and others.
I used Steve tutorial from rmprepusb.com website to achieves Grub4dos silent boot from the previous MBR
If you want to entirely suppress the 'Press F10 to start...' message and the Timeout message and just have the 3..2..1..0 countdown displayed, the following grub4dos commands will patch the disk that grub4dos is installed on, to suppress these messages (omit !BAT if you are typing this into the console):!BATcat --locate="Press " --number=2 --replace=\0\0 (hd0)+20 > nulcat --locate=" to start GRUB," --number=1 --replace=\0\0 (hd0)+20 > nulcat --locate="Timeout : " --number=1 --replace=\0\0 (hd0)+20 > nulcat --locate="F10" --number=1 --replace=\0\0 (hd0)+20 > nulcat --locate="hot-key" --number=1 --replace=\0\0 (hd0)+20 > nul
and I had a very beautiful silent boot but I hope for more silent and seamless boot without the time-out countdown, I tried to achieve this by patching the grubinst.exe in a Hex Editor -which I'm very new to- but I failed, I gut the countdown numbers written beside each other along the line (07 05 04 03 02 01 ).
I hop you can guide me and direct me to the right way to achieve this.