Dialup.
This profile would be good for a standard desktop box, including
the X Window system, graphics applications, sound, editors, etc.
The size of the packages will be around 500MB.

Work_std.
This profile is suitable for a stripped-down user machine without
the X Window system or X applications. It is also suitable for a
laptop or mobile computer. The size is around 140MB. It is
possible to have a simple laptop setup including X with less than
100MB.

Devel_comp.
This is a desktop setup profile with all the popular development
packages, such as Perl, C, and C++. It requires around 475MB.
Assuming you are adding X and some additional packages for other
uses, you should plan for approximately 800MB of disk space for
this type of installation.

Remember that these sizes don't include all the other materials that are
normally found, such as user files, mail, and data. It is always best to
be generous when considering the space for your own files and data.
Notably, the Debian /var directory contains a lot of state information.
The installed package management files can easily consume 20MB of disk
space. In general, you should allocate at least 50MB for the /var
directory because system log files are also stored there.

PC Disk Limitations

A PC BIOS generally adds additional constraints for disk partitioning.