[Info-vax] Request description of UFS for VMS person

glen herrmannsfeldt gah at ugcs.caltech.edu
Wed Apr 29 20:07:33 EDT 2009


AEF <spamsink2001 at yahoo.com> wrote:
 
> The primary one I can think of is that everything on the volume really
> *is* a file. Everything in the volume is "transparent". In Unix, at
> least the ones I have access to I don't know how to dump the super
> block or inodes. And on one of them I can't even dump a directory!
 
> So can you or anyone else tell us more of the advantages? And on the
> Unix side if there is a way to read the super block and inodes? So
> much for "everything is a file in Unix".

If you can read or write the raw device, you can see or change
anything on the disk.  (Some might be in cache, so you have
to be careful while it is mounted.)

With dd and the raw device you can extract a copy of the superblock.

-- glen



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