What caused /proc/sys/dev/cdrom/info was changed?

Solution Verified - Updated -

Issue

  • There were following differences between result of 'sysctl -a' in Oct 10 and one in Dec 20. What caused these differences?
                                 Oct 10     Dec 20
dev.cdrom.info = Can read MRW:    0           1
dev.cdrom.info = Can write MRW:   0           1
dev.cdrom.info = Can write RAM:   0           1

Customer did reboot once in Dec 18, but CD/DVD was not used.

Environment

  • Red Hat Enterprise Linux 6.1

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