I was tidying up some data recently and found a couple of ISO images lying around with cryptic file names. I didn’t have cdinfo installed, so I though I’d run less hoping that the binary data would have some useful text in it. Instead I was surprised to see the following:
CD-ROM is in ISO 9660 format System id: LINUX Volume id: Ubuntu-Server 9.10 i386 Volume set id: Publisher id: Data preparer id: 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: 327972 El Torito VD version 1 found, boot catalog is in sector 1804 Joliet with UCS level 3 found Rock Ridge signatures version 1 found Eltorito validation header: Hid 1 Arch 0 (x86) ID '' Key 55 AA Eltorito defaultboot header: Bootid 88 (bootable) Boot media 0 (No Emulation Boot) Load segment 0 Sys type 0 Nsect 4 Bootoff 704 1796 /.disk /README.diskdefines <snip>File system listing</snip>
Looks like less runs isoinfo -f -R -J -i ubuntu-9.10-server-i386.iso. So I did have the tools I needed installed, I just didn’t know it yet :).