Thank you Klaus. /dev/sda is hd0 and is the permanent hard disk. It has the MBR on which I want to install
Grub. /dev/sdb is the removable hard disk.Its first partition is, as you say, hd1,msdos1 on which grub2 is installed
under /boot/grub. After I boot into /dev/sdb1 with supergrub I run grub-instsll. I am not running any grub or grub rescue
Commands. Grub-install says installation finished. NO errors reported, the version of grub installed is 1..99 when my
system has grub 2.00-14. On booting, the order is cd, usb ( my removable harddisk is on usb, and then permanent hard disk. Maybe, as Goh says, supergrub is messing
up something, but I am mystified as to why even if there were an error, it is not overwritten by the latest grub-install.
Sebastian