-s save-fileI use lilo, and don't know grub, but I'll guess that grub has a widget that will overwrite or make new the MBR, to suit itself (I think it does this automatically, with the command `grub-install /dev/XXX`). Assuming this to be the case, you shouldn;t have to do anything other than installing grub.
When lilo writes a new boot sector, it preserves the former contents of the boot sector in a file, named by default /boot/boot.NNNN, where NNNN is the hexadecimal representation of the major and minor device numbers of the drive/partition.This option defines the backup save file in one of three ways: a save directory (default is '/boot') using the default filename 'boot.NNNN' in the defined directory; a pathname template to which '.NNNN' is appended (default would be '/boot/boot'); or the full pathname of the file, which must include the correct '.NNNN' suffix. When used with the -u option, the full file pathname must be set.
Apologies about not getting back sooner.. going through hours of searches (along with advice here), I was overlooking the simplest thing.. I had originally installed the loader on sbd (but Lilo was installed on sba..)..
Fixed now with just a simple terminal install to sbd and update ;^)
Thank you all for assistance ;^)
(kicking myself in butt for overlooking that >.<)