CMOS Checksum error

[M. Warner Losh]

In message: <XFMail.20041025164213.jeremiah_holt at comcast.net>
            jeremiah_holt at comcast.net writes:
: I have a interresting problem. When I go to reboot my machine 
: with shutdown -r or reboot. The system reboots normally
: until POST when I get a CMOS Checksum invalid message default
: settings applied. However if I use halt or shutdown -h 
: and power off then back on I don't get the error and BIOS settings
: are retained.

Sounds like a dead CMOS battery in an older system.   Or at least a
marginal one.

Warner