OpenBSD not unmounting FAT partitions at reboot?

[Mike Lockwood <mike@voodoomonkey.com>]

Hi all,

I have a laptop running both OpenBSD current (from the Feb 29 snapshots)
and Windows 2000.  The Windows 2000 partition is FAT, and I have it
mounted via /etc/fstab when running OpenBSD.

Sometimes when I write to the Windows partition from OpenBSD, I get disk
errors while booting Windows 2000, and Windows runs ScanDisk (or
whatever it is called) while it is booting.

Could it be that the kernel is not synching or unmounting the Windows
partition when it reboots?  Is this a known problem?  I'll try adding
umount commands to rc.shutdown.  But I think the kernel should be
handling this automatically.

Mike