Re: UDF format ? (was Re: CD-RW blues help)

["Andrew Smith" <rhml2 k1k2 com>]

> On May 31, 2003 12:54 pm, Andrew Smith shrike-list redhat com wrote:
>
>> Last month I re-installed it to RedHat9
>> Then about a week later - for no apparent reason - I thought I
>> might put a UDF formatted DVD-RAM disk in it and see if it worked.
>> Wow - it behaves like a slow 2.6G HDD (about 1G per hour)
>> So UDF is now there and I assume you could use it on any
>> appropriate rewitable medium.
>
> Ok. ....let me see if I get this right: If I install a pre-formatted (UDF)
> blank DVD disk in my DVD reader or CDRW drive, I can use it like
> a (slow) HD writingnd erasing stuff from it, without having to erase
> write the laser disk itself, each time? N.B. I *don't* have a DVD
> writer, just a plain CDRW drive (/dev/hdd) and a DVD reader (/dev/hdc).
>
> Could I then, just buy a UDF pre-formatted DVD and use it as a
> backup? ... since DVD's hold more, it would be IMVHO an economically
> viable option to using 5 or more CDRW disks each time I want to back
> up my data, and (if I follow you correctly), I could simply erase a
> single file, instead of having to do an entire cd-record / erase session.
>
> ... am I understanding this correctly?
>
> as for my mention of "patching", while installing stuff, I seem to recall
> that cdrecord needed to be appropiately "patched" to support UDF,
> hence my query as to if I needed to patch that, and / or the kernel...
>
> (me: not very bright, but willing to learn more linux...)
>
> Elton  ;-)

Sorry for confusing you - I can see how you could read that in what
I said - even though I didn't mean that.

Each drive has specific media it can read, write and rewrite.
A CDRW drive cannot write on DVD media.
You would need a DVD writer - and then of course it would depend
on the media that the writer says it can write on.
But I'd guess that you can use a CDRW disk as a UDF partition and
not have to worry about cdrecord or anything else - just mount it
and use it as any other partition (but much slower - and dont do
LOTS of update)

The point I meant to make (but didn't do very well) was that
RedHat9 - out of the box - will now use a DVD-RAM drive with
a UDF formatted DVD-RAM disk just like a HDD.
I follow this to also mean that you should be able to get any
other rewitable drive to work with UDF as a mounted partiton
as long as the media is correct for the drive.

I'm using my DVD-RAM disks as rsync backups of important data.

-- 
-Cheers
-Andrew

MS ... if only he hadn't been hang gliding!