The point is, the OPer says that Grub is already installed. Though it isn't stated where ... probably the mbr.

There is no need to overwrite it during a subsequent Linux install. Windows , of course will ... but thats windows this is Linux and it shouldn't be tolerated.

So many people just go along with that scenario, and then end up with a mash of multi, non linked Grub/Lilo installs with none of them working properly

If the installer wont allow for bypassing that stage then it is a faulty installer. Regardless of the Linux flavour it belongs to.

Even the primitive woody 3.0 r0 installer has a bypass option as does BSD's.

Grub and Lilo just need a kernel to reference, or via the "other" configuration, an Os's loader, if it isn't a Linux, located on the OS's root partitions first sector. As is the case with things like windows and BSD.

Grub and Lilo don't need to be further installed to those locations !

Thats just a waste of boot time aka double-handling.


jm

Code:
 -|-  If the systems the answer, then the question
                    must have been really stupid      -|-