When I install a linux distribution, I allot the disk space to be used during the installation. I could only use up to the allotment. When I am running out of disk space I have to manually shrink one or more partitions and merge the free space to that partition. Merging it to one partition would make the free space ... free for all installed linux distros. I was thinking of utilizing more of the space. Is it possible to merge them to one partition and configure grub and the distros to boot ?
EDIT: I simplified my wall to a bricks of text by removing some reasons. By searching in the web, I found a nifty way of booting off just the live cd of the specified distro from grub so I just could test it there all though some functions are not available in the live session.
I may have been overacting with the phrase :
many partitions. Currently. I have six partitions (including windows's partition because it is part of my hardisk).