On Thu, 26 Dec 2013 12:49:45 -0800
John Jason Jordan <[email protected]> wrote:
> Everywhere on this computer I find references to sr0, so I'm pretty
> sure it's /dev/sr0. But:
>
> $ sudo mount /dev/sr0 /mnt
> mount: block device /dev/sr0 is write-protected, mounting read-only
> mount: /dev/sr0: can't read superblock
>
> $ sudo mount -t iso9660 /dev/sr0 /mnt
> mount: block device /dev/sr0 is write-protected, mounting read-only
> mount: wrong fs type, bad option, bad superblock on /dev/sr0,
> missing codepage or helper program, or other error
> In some cases useful info is found in syslog - try
> dmesg | tail or so
>
> Superblock?
The Superblock is a block in the file system that tells the system
how big the file system is, how long the blocks are, its options,
the label, the uuid, and so on and so forth. There are usually
several copies of this block scattered throughout the file system.
That's for regular Unix-style file systems. I don't know if the
ISO9660 file system even has a superblock. We'll need someone
more knowledgeable than I to clear that up.
--Dale
--
"The 25120 is easily cooled by employment of a six-foot fan, 1/2
inch from the package. If the device fails, you have exceeded the
ratings. In such cases, more air is recommended."
-- From a Signetics data sheet.
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