Question : Windows Server 2008 System State Backup fails due to FAT32 partition

I can't seem to backup the system state.  Here is what happens when I try

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C:\Windows\system32>wbadmin start systemstatebackup -backupTarget:C:
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2004 Microsoft Corp.

Starting System State Backup [1/2/2009 9:54 AM]
Retrieving volume information...

This would backup the system state from volume(s) OS(D:),Local Disk(C:) to C:.
Do you want to start the backup operation?
[Y] Yes [N] No Y

One of the volumes specified for backup is invalid as it is either not on a fixe
d drive or is non-NTFS or read-only.
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My D: drive is labeled as OS and seems to only have the boot and BCD\BitLocker files.  Is there a way for me to exclude the D: or can I convert it to NTFS without breaking my server?

Answer : Windows Server 2008 System State Backup fails due to FAT32 partition

I cannot think of any issues that it would cause.
I have converted boot partitions before without error, but never on a server.