where is GRUB installed to (dual-drive)?

[David]

Hi,

thank you for the 12.10 bootloader responses.

When I install Ubuntu on a computer with two hard drives, where Windows
pre-exists on one drive and Ubuntu goes onto the other drive, where is
the GRUB placed, onto the Ubuntu hard drive, or somehow onto the Windows
hard drive?

Just wondering because is it the case that I can happily wipe over the
Ubuntu drive and install different Ubuntu versions in turn without
affecting the Windows hard drive.

If GRUB *is* on the Windows drive, does it [and Windows] get messed up
by repeated new installations of different Ubuntu versions [only one
version in place at a time]?

Thank you,

Dave