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I got a little confused after I had read advices on https://wiki.archlinux.org/index.php/Partitioning and on https://help.ubuntu.com/12.04/installation-guide/powerpc/directory-tree.html. Why is there such a big difference between the sizes of the partitions? E.g., about / partition.

Ubuntu.

Typically 150–250MB is needed for the root partition.

Arch.

15-20 GB should be sufficient for most users with modern hard disks.

  • 2
    "Needed" != "sufficient for most users"... – vonbrand Mar 30 '13 at 14:24
  • @vonbrand, by the way, I followed the Ubuntu guide once. E.g., 200 MB wasn't enough for installing a package and I had to re-install the system. Why? Is the guide wrong? – Maksim Dmitriev Jun 3 '13 at 11:36
  • @Marksim Dmitriev You may have needed the full 250MB. – ChristonianCoder Jul 7 '14 at 18:15
6

The biggest difference is due to this in Arch:

The root filesystem (/) must contain the /usr directory

/usr can grow quite a bit depending on what you install. Ubuntu supports (and recommends in that document) that /usr be on a separate partition, so / doesn't have to be very large.

| improve this answer | |
  • 1
    @RedPlanet I'll vote up for you – ignis May 2 '13 at 18:06

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