Re: Unidentified subject!
Hi,
Andrew M.A. Cater wrote:
> As somebody testing images when point releases are made, I
> would suggest against using larger images than the DLBD - there is the
> likelihood of bit errors to ruin your image when writing many GB
There is a file md5sum.txt in the ISOs to check the transport integrity
of the packages and some other files.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011343#180
gives my re-narration of the checksum run of internal Debian tool
https://packages.debian.org/unstable/cdrom-checker
:
(cd /mnt/iso
cat md5sum.txt | while read line
do
if echo -n "$line" | md5sum -c 1>/dev/null 2>&1
then
dummy=dummy
else
echo "BAD: $line"
fi
done ) 2>&1 | wc
I dimly remember that cdrom-checker is part of a check offered by the
installer in the ISO.
This run with mounted debian-12.7.0-amd64-netinst.iso reports a match:
gunzip < /mnt/iso/install.amd/initrd.gz | fgrep 'cdrom-checker'
But that's much more your realm than mine.
Damage after the end of the directory tree area of a Debian ISO hits
only the content of particular data files. A single byte can spoil not
more than one data file (and its hardlink siblings, like with the
three vmlinuz files in the netinst ISO).
With debian-11.2.0-amd64-DVD-2.iso the size of the directory tree
is 6 MB. Multiplied by 21 DVD ISOs for 12.10.0 = ~ 126 MB.
Have a nice day :)
Thomas
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