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
