On a system with Win98 and Boot Magic on the first partition, the Upgrade option mistakenly overwrites Boot Magic with LILO and disables the Win98 partition, fortunately the Boot Magic emergency disk can fix the problem and recover Win98 partition. The Install option asks where to put LILO, the Upgrade option should do the same thing.
But the _expert_ upgrade path should _not_ assume lilo at all. This has been noted in asides in other bugs. There are still heritage boxes which need to use dos drivers to initiate undocumented hardware and then boot with loadlin. Not to mention the wealth of other double, triple and quadruple boot systems. The installer must request whether lilo is to be used at all, and if so, it needs to request or present the proposed lilo.conf for confirmation or modification. updates-RHEA-1999_045.img still misbehaves in this area.
Assigned to jturner