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Re: Some help with dd backing up into an iso | now xorriso help




Thomas Schmitt:
> Hi,
> 
> i forgot to adapt my xorriso example from a few days ago:
> 
>   xorriso \
>   -for_backup \
>   -outdev usb_part1.iso \
>   -map /mnt/usb-Kingston_DataTraveler_3.0_08606E69C773BFC06965007B-0:0-part1 /

Ok, my drive has grown from 1,7gB to about 2GB since the last try with
DD which produced an image equal to the drive, 7,7gB and took for ever.

This run in a second and produced an iso that is about half a MB.  Is
something wrong?

-rw-r--r--  1 user     458752 Mar  9 00:08 usb_part1.iso


> 
> Note that the last "/" is not a misspelled "\" but the path to the
> upcomming ISO's root directory. The "\" tell the shell that the command
> line goes on in the next input line.
> 
> This will create the (probably large) file usb_part1.iso, which you
> can mount (as superuser) by:
> 
>   mkdir /mnt/usb_part1_iso
>   mount -o loop /where/it/is/usb_part1.iso /mnt/usb_part1_iso
> 
> with "/where/it/is" replaced by the absolute path to the ISO image file.
> Then the file tree copy should show up under /mnt/usb_part1_iso .
> 
> If you have a DVD drive, with e.g. address /dev/sr0 and a DVD+RW in it,
> then you may write directly to the DVD:
> 
>   xorriso \
>   -for_backup \
>   -outdev /dev/sr0 \
>   -blank as_needed \
>   -map /mnt/usb-Kingston_DataTraveler_3.0_08606E69C773BFC06965007B-0:0-part1 /
> 
> "-blank as_needed" will enable overwriting of old content on the DVD+RW
> or blank a DVD-RW. With DVD+RW or formatted DVD-RW, it will be fast.
> With unformatted DVD-RW it will last as long as a full write run.
> DVD-R or DVD+R are usable if not yet written by other burn runs.
> 
> 
> Have a nice day :)
> 
> Thomas
> 

-- 
 "The most violent element in society is ignorance" rEG