Bug#394963: installation: Problems with dual booting Dell D600
I think its problem with compatibility with windows and linux partman.
don't forget, windows server can use "dynamic disc", that is not
compatible with anything. desktop versions of windows can use this type
of partitions, after bit modification in 4 system files.
Second think, this can be problem with geometry interpretation. I have
bad experiences when I partition disk with different tools from
different systems. I suggest rather to create all needed partitions
then under debian installer only change types and re-format that
partitions, and assign to mountpoints. It allways works me.
I notice, microsoft has problems with this own products. There are some
incompatibilities between windowsXP and windows9x partitioning tools.