having the following question: What does the DVD/CD media check
exactly
if booting a Fedora DVD/CD? Is it the sha256sum? If yes, why this media
check, because it could be done after having burned the DVD?
There are embedded MD5 checksums, sometimes 20 of them per .iso.
See /usr/bin/implantisomd5. Watch messages from /usr/bin/livecd-iso-to-disk.
The drive+system which burned the DVD/CD might be different
from the drive+system which is reading the DVD/CD at install time.
Even on the same system, some drives use a different transducer
for reading than for burning.
Temperature, humidity, electrical supply irregularities, etc., can
affect data integrity.
If not, is it possible to perform this media check immediately after
having burned the DVD (means: can I start the media check from that
freshly burned DVD?)
/usr/bin/checkisomd5
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