I want to use dmesg to check how much memory is on my redhat 7.3  machine.
i user 
dmesg | more
but get

cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!
---
---
cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!

what is wrong with it?
Thanks
--------------------------------
Jianping Zhu
Department of Computer Science
Univerity of Georgia 
Athens, GA 30602
Tel 706 5423900
--------------------------------



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