Bug#692927: debian-installer: Unable to finish installation using btrfs and "traditional partitioning"

[Gábor J.Tóth <debbugs@jnet.hu>]

Package: debian-installer
Severity: normal
Tags: d-i


I tried a clean install of Wheezy, on a machine with "traditional" 
partitioning (i.e., first partition starting on sector 65).  I assigned a
single partition to this setup, and selected btrfs for it.  After the 
installation completed, grub installation failed, complaining "Your 
core.img is unusually large. It won't fit in the embedding area.."

I now realize that the core.img with btrfs support is indeed too large to
install into the 32k available in front of the first partition, but
this realization required a good deal of googling.  What would be helpful,
however, is to warn the user up front that this setup isn't going to work,
that they either need a different partitioning scheme (e.g., bigger whole
before the first partition), a separate, non-btrfs boot partition, or not use
btrfs.