Doesn't cmp work? I ussually verify my OpenBSD boot floppies like so...
$ cmp floppy33.fs /dev/fd0a Shouldn't this work for CDs and ISOs? --TimH On Mon, 24 Feb 2003 08:57:04 -0800 (PST) Dave Wyatt <[EMAIL PROTECTED]> wrote: > Google is your friend! > I was going to post the question below, but found this > on Google: > > http://www.troubleshooters.com/linux/coasterless.htm#rawread > > Any Comments? > > > Short question: > > How can I verify or compare an ISO that I created from > a known good CD? > > > Long question: > > I created ISOs for Red Hat 8.0 from CDs I burnt from > downloaded ISOs which checked good with the md5sums > after downloading. After burning them, the CDs > checked good with Red Hats checkmedia, so these are > *my originals* that I wanted to make copies of for my > son. I no longer have the downloaded ISOs. > > I did the > > dd if=/dev/cdrom of=RedHatDiskx.iso > > thing and created the ISOs. I then burned the CDs and > began the checkmedia routine. CDs 1 and 2 passed and I > wasn't going to check the rest but did anyway. CDs 3-5 > failed checkmedia. I then re-checked the originals > and they all passed checkmedia. So I ended up with 3 > coasters, which isn't a > > big deal but pretty annoying. > > I looked at man dd and man md5sum. I don't see any > way to verify with dd or to create md5sums from a data > CD. Did I miss something? Is there a way to verify > that an ISO created with dd is valid? Or that a CD > burned from an ISO is good? > > BTW, if it makes any difference, the versions are: > > md5sum (textutils) 2.1 > dd (fileutils) 4.1.11 > > on a SuSE 8.1 system. > > Dave > > > __________________________________________________ > Do you Yahoo!? > Yahoo! Tax Center - forms, calculators, tips, more > http://taxes.yahoo.com/ > _______________________________________________ > Eug-LUG mailing list > [EMAIL PROTECTED] > http://mailman.efn.org/cgi-bin/listinfo/eug-lug _______________________________________________ Eug-LUG mailing list [EMAIL PROTECTED] http://mailman.efn.org/cgi-bin/listinfo/eug-lug
