D.2. Disk Space Needed for Tasks

A standard installation for the amd64 architecture, including all standard packages and using the default 2.6 kernel, takes up 604MB of disk space. A minimal base installation, without the Standard system task selected, will take 432MB.


In both cases this is the actual disk space used after the installation is finished and any temporary files deleted. It also does not take into account overhead used by the file system, for example for journal files. This means that significantly more disk space is needed both during the installation and for normal system use.

The following table lists sizes reported by aptitude for the tasks listed in tasksel. Note that some tasks have overlapping constituents, so the total installed size for two tasks together may be less than the total obtained by adding up the numbers.

By default the installer will install the GNOME desktop environment, but alternative desktop environments can be selected either by using one of the special CD images, or by specifying the desired desktop environment when the installer is booted (see Section, “Selecting and Installing Software”).

Note that you will need to add the sizes listed in the table to the size of the standard installation when determining the size of partitions. Most of the size listed as Installed size will end up in /usr and in /lib; the size listed as Download size is (temporarily) required in /var.

Task Installed size (MB) Download size (MB) Space needed to install (MB)
Desktop environment      
  • GNOME (default) 4326 804 3236
  • KDE 2349 826 3175
  • Xfce 1781 566 2347
  • LXDE 1521 495 2016
Laptop[a] 315 98 413
Web server 22 5 27
Print server 238 75 313
DNS server 3 1 4
File server 128 27 155
Mail server 84 33 117
SQL database 39 9 48
SSH server 1 0 1

[a] There is some overlap of the Laptop task with the Desktop environment task. If you install both, the Laptop task will only require a few MB additional disk space.

If you install in a language other than English, tasksel may automatically install a localization task, if one is available for your language. Space requirements differ per language; you should allow up to 350MB in total for download and installation.