> Why not just use a custom disklabel template that suits your needs?
This is the -t option to /sbin/disklabel.
How is it possible to use a custom template from the OpenBSD installer?
On the other hand, this workaround is not the most convenient since one
typically does not reinstall OpenBSD frequently. New users often do not
realize this issue and only discover after installing and configuring
their system that they are utilizing less than half of the available
storage on their hard drive, which nowadays is typically around 1TB in
capacity.
> I don't know if I'm misreading your inquiry but if I have more than
enough storage space why would I allocate way too much space to system
partitions by allocating it proportionally?
The only partition that I believe does not benefit from an increase in
size is the one mounted on /usr/X11R6. For the rest, there may be
reasons to consider increasing their sizes.