Date: Wed, 02 Apr 2014 01:33:41 -0700 From: "Ronald F. Guilmette" <rfg@tristatelogic.com> To: freebsd-questions@freebsd.org Subject: A question about fsck and the -t option Message-ID: <85383.1396427621@server1.tristatelogic.com>
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If fsck is invoked upon a /dev device node which is a hard disk partition containing a valid file system, and if this invocation of fcsk _does not_ include any -t or -T options, then does fsck make any sort of attempt to automagically determine or intuit what sort of file system exists upon and within the given partition? Previous to today, I had always believed that either (a) fsck looked at the magic number in the first word of the partition in order to automagically determine the file system type or else (b) that fsck, on FreeBSD at least, defaulted (in the absence of any explicit -t or -T options) to assuming that the file system type was ufs. But as of this moment it appears to me that neither of these assumptions were or are true, and that in the absence of all -t and/or -T options, fsck on FreeBSD simply throws up its hands and says "Could not determine filesystem type". Is this the intended outcome in such cases?
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