Re: DVD probs

[Todd Gruhn <tgruhn2%gmail.com@localhost>]

Did this in EMACS shell.

root@gandalf$ mount -o rw -t udf /dev/cd0 /cdrom
mount -o rw -t udf /dev/cd0 /cdrom
mount_udf: Cannot mount /dev/cd0 on /cdrom: Read-only file system

Date == 7/29/2024
SONY 1x - 4x; 2005

I did newfs_udf on 7/29/2024

To do I thing I did:

newfs_udf -L DVD-disk -F -s 700M /dev/rcd0d

Manpage says:

 newfs_udf -P "Encyclopedia:copy-nr-1" -L "volume 2" /dev/rcd0d

####################################
IS the one below seen as a CD??
Its a DVD ...

root@gandalf$ mount /dev/cd0a /cdrom
mount /dev/cd0a /cdrom

root@gandalf$ ls -l /cdrom
ls -l /cdrom
total 4903564
-rw-r--r--  1 root  users  1928753152 May 22  2022 BACKUP-MP3-22-May-2022.cpio
-rw-r--r--  1 root  wheel   241872384 Jan 19  2022 COSBY.cpio
drwxr-xr-x  2 root  wheel        1024 Jul 26  2023 END-TIMES
drwxr-xr-x  2 root  wheel         512 Oct 16  2021 INTROVERTS
drwxr-xr-x  2 root  wheel        1024 Feb 14  2023 JANET-PARSHALL
-rw-r--r--  1 root  wheel   339285504 Apr 14  2021 WOW-CDS-as-mp3s.cpio

## did on 2/7/2022
  cdrecord dev=/dev/rcd0 blank=fast
  newfs /dev/rcd0
  mount /dev/cd0a /cdrom

On Wed, Sep 2, 2026 at 11:11 AM Ignatios Souvatzis
<ignatios%cs.uni-bonn.de@localhost> wrote:
>
> Hello Todd,
>
> On Tue, Sep 01, 2026 at 05:44:17PM -0400, Todd Gruhn wrote:
> > I keep getting 'Cannot mount /dev/cd0a on cdrom: Read-only filesystem'
> >
> > I did newfs_udf -- on DVD+RW
> >
> > Whats up?
>
> What sort of mount command did you attempt *exactly* before that
> error message?
>
> Just to make sure: was the newfs'd medium in the same drive as when
> newfs'd, and is this /dev/cd0a ?
>
>         -is
>
> --
> Ignatios Souvatzis, Chief IPv6 enabler          RFC 6540
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