On Du, 02 mar 14, 12:30:54, Thomas Schmitt wrote: > Hi, > > > On Sb, 01 mar 14, 14:38:14, Richard Owlett wrote: > > > root@minimal-squeeze:/home/richard# dd if=/dev/cdrom bs=2048 > > > count=1939608 of=/home/richard/myiso1.iso conv=notrunc > > > [...] > > > root@minimal-squeeze:/home/richard# dd if=/home/richard/myiso1.iso > > > bs=2048 count=1939608 of=/dev/sdb conv=notrunc > > Andrei POPESCU wrote: > > > Not sure if this makes a differences, but why the count= and conv= ? > > To keep things simple, could you please retry with > > cp /home/richard/myiso1.iso /dev/sdb > > Both copy gestures for /dev/sdb are equivalent and should be ok. Yes, but I'd rather know :)
> The conv=1939608 in the first dd command is necessary, if the MD5 > of the resulting .iso file shall match the published MD5 of the > Debian .iso. Most DVD types would return more bytes after the end > of the ISO filesystem. I'm aware of the issue (though I don't even try to understand all the internals). > Whatever method was used, the MD5 sum of the resulting copy can be > determined by: > > dd if=/dev/sdb bs=2048 count=1939608 | md5sum - Hmm, I thought the 'count=' stuff was only needed for CD-ROMs. Again, I prefer to keep things simple and would rather use just: md5sum /dev/sdb > and should match the published MD5 of the Debian ISO image. Yes, but I'd rather know, which is why I prompted Richard for the md5sums ;) Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser Offtopic discussions among Debian users and developers: http://lists.alioth.debian.org/mailman/listinfo/d-community-offtopic http://nuvreauspam.ro/gpg-transition.txt
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