The DISKQUOTA DISABLE command suspends quota operations on a
    volume. To permanently disable quotas on a device, disable
    the quotas with the DISKQUOTA DISABLE command and delete
    the file [000000]QUOTA.SYS. Otherwise, the system implicitly
    enables quotas when the disk is mounted, leaving invalid quota
    information.

    If you enable the quota file later, enter the DISKQUOTA REBUILD
    command to update UIC entries and usage counts.