grub question

[François Patte]

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Bonjour,

I have a debian installed and I want to install on the same disk a
fedora21.

Of course GRUB2 is installed to boot the debian install.

What will happen with GRUB during the fedora install:

will anaconda detect the debian install and ask me what to do?

will it detect the debian install and configure GRUB to boot both
systems without saying anything?

will it unable to detect the debian install and erase the GRUB config?
In that case how to recover my debian system boot?

will it tell me that it has detected a GRUB2 installation, but that
its version is not compatible with the version shipped with fedora21?
In that case, what to do?

will it.... whatever I cannot imagine....


Thank you for enlightments

- -- 
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)1 8394 5849
http://www.math-info.univ-paris5.fr/~patte
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