Novell NETWARE 6-DOCUMENTATION Manual page 3083

FILESYS-X-500: The FAT chain used to define the FAT has an invalid forward
reference. Volume name was NOT mounted.
Source:
Explanation:
Possible Cause:
Action:
FILESYS-X-501: A file's FAT chain contains entries out of order. Volume name was
NOT mounted.
Source:
Explanation:
Possible Cause:
Action:
FILESYS-X-502: A file's FAT chain collides with another FAT chain.
Source:
Explanation:
Action:
132 System Messages
FILESYS.NLM
A File Allocation Table (FAT) chain is a list of directory block locations.
This error probably indicates file system corruption.
Run VREPAIR and restart the system.
Warning: If you delete the volume, all data will be destroyed. You will have
to restore the data from a backup.
If the problem persists, make sure a volume backup exists. Delete the volume,
re-create it, and restore the data from the backup.
FILESYS.NLM
A File Allocation Table (FAT) chain is a list of directory block locations. The
data of the file might not be damaged, but the file is invalid due to the sequence
of the data.
This error probably indicates file system corruption.
Run VREPAIR and restart the system.
Warning: If you delete the volume, all data will be destroyed. You will have
to restore the data from a backup.
If the problem persists, make sure a volume backup exists. Delete the volume,
re-create it, and restore the data from the backup.
FILESYS.NLM
The File Allocation Table (FAT) chain is a list of directory block locations.
Both files involved are invalid; updates to either file could cause damage to
both of them.
Run VREPAIR and restart the system.
Warning: If you delete the volume, all data will be destroyed. You will have
to restore the data from a backup.
If the problem persists, make sure a volume backup exists. Delete the volume,
re-create it, and restore the data from the backup.