I suspect that adviser used mdvimage.iso as a generic name and you would use, for example mandriva-linux-free-2009.1-i586.iso or whatever is the file you have in your working directory. You can use the ls command, then copy/paste the file or type the first few letters and press Tab for Tab completion....
Code:
[rolf@localhost mandriva-linux-free-2009.1-i586]$ ls
135959-mandriva-2009-spring-x64-kde-4-2-2-18537.jpg mandriva-free-1024x7681.jpg
2009.1-boot-Free_theme.png mandriva-linux-free-2009.1-i586.idx
2009.1_free.glabels mandriva-linux-free-2009.1-i586.iso
3249123814_c8042ea6c1.jpg mandriva-linux-free-2009.1-i586.iso.md5
Install_boot.jpeg mandriva-linux-free-2009.1-i586.iso.md5.asc
mandriva_20091_beta.jpg mandriva-linux-free-2009.1-i586.iso.sha1
Mandriva-2009-1-RC2-Screenshot-Tour-17.jpg writecd.cmp.log
Mandriva-2009-1-RC2-Screenshot-Tour-31.jpg
Also, /dev/sdb is, likely, generic. You have to be certain of the device name. Become root and do,
Code:
# tailf /var/log/messages
Plug the usb key and watch what the kernel names the device.
ctrl-c will quit the tail program.
You have to be root to run the dd command in all cases I have used it, anyway.
Another method is to use the Mandriva Seed program. If you read the entire following thread, you should have enough information to do that:
http://forum.mandriva.com/viewtopic....er=asc&start=0