On Thursday 06 November 2025 at 00:20:19, Haines Brown wrote to me:

> On Wed, Nov 05, 2025 at 10:46:00PM +0100, Antony Stone wrote:
> >
> > Well, what separate sizes did you start from? There is no "standard
> > size" for the directories on a machine - it depends on what you've
> > installed.
>
> Undertood, but I hoped there was a typical size. No choice but to reinstall
> operating systgem from scratch, but then what size should I make /usr just
> to be safe.

I say again - what size are the separate directories you are starting from,
which are going to get merged together?

I believe that is the best way to estimate how much capacity you will need for
the merged result.

Suppose I could tell you that the typical size for /usr is 25 Gb. Yours is 26
Gb, and it's 100% full. All that tells us is that you have more data in /usr
than is typical. It tells us nothing about how large _your_ /usr partition
needs to be.

> Does 60Gb sound ample? What size is yours?

I cannot answer that meaningfully since I have not yet upgraded a machine to
Excalibur, therefore I do not have the situation you are dealing with.

I _could_ tell you that on various machines, I have:

# du -sh /usr
6.6G    /usr
1.3G    /usr
952M    /usr
7.7G    /usr
5.0G    /usr

However none of those are running Excalibur, and I don't think the above
numbers tell you anything useful at all about _your_ machine.

If you're going to re-install anyway, why not just make /usr part of the root
partition instead of being separate?


Antony.

--
A good conversation is like a miniskirt;
short enough to retain interest,
but long enough to cover the subject.

- Celeste Headlee

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