+RW iso or loopback?

[Matthew Frederico]

> Depends on the file system.  If the image is ISO9660, then it is by
> nature read-only.  UDF file systems are r/w.  Of course you can format
> an image anyway you want.  I've burned ext3 dvd's before.  In that case,
> the image can be mounted r/w before burning.  I've also heard that DVD
> +RW's can basically take any r/w file system you want, since they can do
> gapless random writes.  -RWs cannot, except with UDF.

Wow, great information!  thank you very much Michael.  I'm actually
trying to modify initrd with read/write, and its a squashfs.  Its from
the THINSTATION linux project.

-- 
-- Matthew Frederico
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