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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.

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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 at 18:15

1 Answer 1

up vote 6 down vote accepted

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.

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thanks. Unfortunately, I can't vote up yet. –  Maksim Dmitriev Mar 30 '13 at 13:28
1  
@RedPlanet I'll vote up for you –  ignis May 2 '13 at 18:06

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