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The time now is Fri 22 Sep 2017, 04:25 All times are UTC - 4 |
 Forum index » House Training » Beginners Help ( Start Here) |
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about this md5sum, and burning the CD
Moderators: Flash, Ian, JohnMurga |
 
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Shep
Joined: 08 Nov 2008 Posts: 880 Location: Australia |
A few questions on the md5sum… The md5sum of my Puppy ChekMate iso file doesn't agree with the published md5sum. Should they agree? Okay, so I know the published md5sum definitely can be related to the burnt CD, so I'll see how they compare after I burn the disc ... Decided to try one of these RW mini-DVDs, but Dpup Exprimo (my working dog) crashed during the final after-the-main-burn stage (I'd guess that's the fixate stage). Okay, so I tried again, but this time burnt it so it didn´t fixate. Puppy gave two woofs  when it finished the burn.
But still the md5sums didn´t agree. Now, this brought to mind a point which I vaguely recall from some years back, that you can´t compare the md5sum of a non-fixated CD with the published md5sum. Does that sound right? Is there any way I can be sure I have a DVD with no errors? The PC boots from the disc, and programs run, but it seems disappointingly slow compared with Exprimo. |
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zigbert
 Joined: 29 Mar 2006 Posts: 6475 Location: Valåmoen, Norway |
The command 'md5sum' itself can't compare an iso-image and a disc burnt multisession (open disc). But both Burniso2CD and Pburn can check the md5sum of an iso burnt multisession using some more commands. This is an option you get right after burning is complete. Sigmund _________________ Stardust resources |
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Shep
Joined: 08 Nov 2008 Posts: 880 Location: Australia |
You were quick off the mark with your reply. 
Yes, I noted what BurnISO2CD gave as the md5sum, and it did not correspond with the published one. |
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postfs1
Joined: 27 Mar 2010 Posts: 820 |
http://www.murga-linux.com/puppy/viewtopic.php?p=631347#631347 http://www.murga-linux.com/puppy/viewtopic.php?p=639430#639430 |
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zigbert
Joined: 29 Mar 2006 Posts: 6475 Location: Valåmoen, Norway |
Thank you Sigmund _________________ Stardust resources |
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Shep
Joined: 08 Nov 2008 Posts: 880 Location: Australia |
For the benefit of anyone reading this thread, yes, the md5sum of the iso file downloaded to your HD before burning should agree with the md5sum of the CD after burning. In a terminal, you can find these with, respectively, md5sum filename.iso and md5sum /dev/sr0 (where sr0 happens to be my CD drive). If these don't agree with the published md5sum, something is wrong. |
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01micko
 Joined: 11 Oct 2008 Posts: 8656 Location: qld |
Just a way to cross check.. You could mount the known good iso image from your hard, get the checksum of the main sfs, zdrv (if existing), vmlinuz and initrd.gz, then mount the CD or DVD and do the same for the individual files on the medium and compare. Yes some farting about but it would give peace of mind. _________________ Puppy Linux Blog - contact me for access |
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about this md5sum, and burning the CD
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