Date: Wed, 5 Mar 1997 00:58:16 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: ROBERTC@PII.COM (Robert Clark) Cc: freebsd-questions@freebsd.org Subject: Re: (DOS) Partition Size / Cluster Size. Message-ID: <199703050558.AAA27805@dyson.iquest.net> In-Reply-To: <s31c4a01.060@pii.com> from "Robert Clark" at Mar 4, 97 04:07:30 pm
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> > (DOS) > Partition Size Cluster Size > 1-31MB 512bytes > 32-63MB 1k > 64-127MB 2k > 128-255MB 4k > 256-511MB 8k > 512-1023MB 16k > 1024-2047MB 32k > > If you use FIPS to shrink a > partition, don't cross a boundary > above? > I don't know what you are really asking, but on FreeBSD V2.1.X DO NOT use a DOS filesystem that has a cluster size of greater than 16K. If you shrink a filesystem with FIPS, you'll not shrink the cluster size, and will still have problems if the cluster size is greater than 16K. Anecdote: I just tried to install FreeBSD from a DOS partition today. (It was 2.1.6). It wouldn't install properly. Found out that the DOS partition was 1.6GB!!! We rebuilt the disk so that it had a 500MB partition (from scratch, not using FIPS), and the install went fine. So, don't even mount a DOS FS with cluster size of greater than 16K read-only -- if you do, you will be placing the rest of your filesystems at risk. FreeBSD V2.2 apparently has the problem fixed. John dyson@freebsd.org
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