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Re: Narrowing down problem source - was [Re: Extracting directories from an ISO image, command line tool?]



Richard Owlett wrote:
>
>I started over again. I switched to a laptop dedicated to things 
>that may not work as expected. For some of my projects I 
>regularly wipe the disk and do a complete reinstall of Debian. 
>Currently I'm running Debian 8.0 with Mate as DE. No updates.
>
>I used
>   blocks=$(expr $(/sbin/isosize /dev/sr0) / 2048)
>   echo "Byte count: $(expr $blocks '*' 2048)"
>   dd if=/dev/sr0 bs=2048 count=$blocks of=dvd8_2.iso
>as a pattern for each DVD.
>
>_Some_ passed your test of
>  ls -l /media/richard/Lexar/dvd8_2.iso
>  /sbin/isosize /media/richard/Lexar/dvd8_2.iso
>
>Example:
>  ls -l dvd8_9.iso
>  /sbin/isosize dvd8_9.iso
>
>resulted in
>richard@debian:~$  ls -l dvd8_9.iso
>-rw-r--r-- 1 richard richard 3976200192 Sep 16 11:50 dvd8_9.iso
>richard@debian:~$
>richard@debian:~$  /sbin/isosize dvd8_9.iso
>4460664832

I'll tell you what's most likely wrong - you're storing your extracted
ISO images on a FAT32 filesystem which doesn't support file sizes
larger than 4GiB. That's why DVD #1 works, it's explicitly reduced in
size to fit on a 4GB USB stick too.

-- 
Steve McIntyre, Cambridge, UK.                                steve@einval.com
"Further comment on how I feel about IBM will appear once I've worked out
 whether they're being malicious or incompetent. Capital letters are forecast."
 Matthew Garrett, http://www.livejournal.com/users/mjg59/30675.html


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