To, Teams Debian CD and Grub Development, Dear Sirs,
Good morning, Sirs. With your support for the first two questions the rest two questions I assume I would be able to solve by myself. The last two questions being: (3) Use the above-created USB pendrive with Debian Live 9.11.0 ISO to install Debian on different laptops without altering the HDD's MBR that may have Windoze MBR. (4) Upgrade legacy Grub2 Menu-list to the latest Grub Menu-list on laptops already using various distros of Linux. A reply to this email ISN'T requested. This email is to sum up the present scenario. Thanking you in anticipation, Regards, Rajib Bandopadhyay A Debian and Knoppix user