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Date:      Mon, 5 Feb 1996 22:20:01 -0800 (PST)
From:      Donald Burr <>
To:        Basket Case <>
Subject:   Re: Decreasing the percentage (10%) of a filesystem owned by root
Message-ID:  <>
In-Reply-To: <>

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On Mon, 5 Feb 1996, Basket Case wrote:

> Hi --
> I notice that 10% of a HD is generally allocated for root to make sure root
> has some extra room for files and stuff.  How can i decrease this percentage
> as 10% on a 9gb drive takes a big toll and I'd like to reduce that.  Would
> I also have to reformat?
> Thanks.
> Jon

Unmount the filesystem first.  If you want to play with the root 
filesystem, you will have to boot single-user.

Then, run the command:

tunefs -m <pct> /dev/rsd0a (or /dev/rwd0a, or whatever the special device is)

Replace <pct> with the percentage of total disk space to save for root.  
The man page warns that anything below 10% seriously degrades filesystem 
performance, though. :(

Donald Burr [], PO Box 91212, Santa Barbara CA 93190-1212
TEL (805)564-1871 / FAX 564-2315 / WWW
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