Reported Volume Size Wrong On 11.2 KDE LiveCD

Downloaded the 11.2 KDE LiveCD. md5 is correct. Burned to disc. Booted up and selected the media check option.

media: CD1
size: 694182 kB
pad: 300 kB
check: 100%
check: md5sum okay
md5: 586c05e67772f53ac33177ae9941d04e

When I did a media check with the 11.1 live cd the outputted md5 hash was the same as the iso image that I downloaded. This one’s different. Thinking the burning process went wrong I did it again, same result. Having remembered a post by oldcpu describing how to check the integrity of a disc I did some more checking.

$ md5sum /dev/sr0
9313767747ac5dc326a45ab6585bbf45 /dev/sr0

This is correct.

$ isoinfo -i /dev/sr0 -d
CD-ROM is in ISO 9660 format
System id: LINUX
Volume id: CDROM
Volume set id:
Publisher id: SUSE LINUX Products GmbH
Data preparer id: KIWI - KIWI Image System
Application id: GENISOIMAGE ISO 9660/HFS FILESYSTEM CREATOR (C) 1993 E.YOUNGDALE (C) 1997-2006 J.PEARSON/J.SCHILLING (C) 2006-2007 CDRKIT TEAM
Copyright File id:
Abstract File id:
Bibliographic File id:
Volume set size is: 1
Volume set sequence number is: 1
Logical block size is: 2048
Volume size is: 347091
El Torito VD version 1 found, boot catalog is in sector 50
Joliet with UCS level 3 found
Rock Ridge signatures version 1 found
Eltorito validation header:
Hid 1
Arch 0 (x86)
ID ‘SUSE LINUX Products Gmb’
Key 55 AA
Eltorito defaultboot header:
Bootid 88 (bootable)
Boot media 0 (No Emulation Boot)
Load segment 0
Sys type 0
Nsect 4
Bootoff 33 51

$ dd if=/dev/sr0 of=image11.iso bs=2k count=347091
347091+0 records in
347091+0 records out
710842368 bytes (711 MB) copied, 376.087 s, 1.9 MB/s

$ md5sum image11.iso
586c05e67772f53ac33177ae9941d04e image11.iso

Not correct. But it was interesting that the md5 hash was the same as that reported by the media check. I also noticed a difference in size between the resulting iso file and the downloaded iso file of 92160 bytes. Since 1 record is 2048 bytes, that’s a difference of 45 records. Add that to 347091 and the volume size should be 347136 records. Out of curiosity I reran the dd command using a count of 347138 (deliberately adding 2 more records just to see what will happen).

$ dd if=/dev/sr0 of=image11.iso bs=2k count=347138
347136+0 records in
347136+0 records out
710934528 bytes (711 MB) copied, 376.076 s, 1.9 MB/s

$ md5sum image11.iso
9313767747ac5dc326a45ab6585bbf45 image11.iso

Which is correct! Not that it’s a big deal, just thought I’d mention it.

btw, 11.2 looks real good! I was fooling around with it a bit and I reeaaalllly like it. Only problems I noticed so far were that “see through” effect thing similar to item 1 on a list within this post, and the whole system froze on me one time while I was repeatedly fooling around with the KNetworkManager. Anyway, good work and a round of applause to the whole openSUSE community. Nice job! :wink:

There is always room for error, especially on space info it is not always 100% accurate.

TaraIkeda, true! But, I didn’t know where isoinfo got its info from. I’m still learnin’ here. Plus, while I was reading up on testing a CD, I couldn’t help but feel I didn’t have a winner. :’( rotfl! Now I know it’s okay. :slight_smile: