mountmsdosfs(): bad FAT32 filesystem

[Freek Nossin]

Hello,
 
I have a computer with 2 disks. On one of them freebsd is installed. The
other one is a FAT32 drive. I would like to mount the FAT32 drive, but my
dmesg log reports errors (see below). The drive still contains some data I'd
like to retrieve (after that is done a format of the drive would be an
option). Any suggestions on how I could do that (best)?

Regards,

Freek Nossin

dmesg output:
 
<...>
ad0: 1626MB <ST31720A/0.57> [3305/16/63] at ata0-master WDMA2
ad1: 38172MB <MAXTOR 6L040J2/A93.0300> [77557/16/63] at ata0-slave WDMA2
acd0: CDROM <CD-ROM 36X/AKW/U22> at ata1-slave PIO4
Mounting root from ufs:/dev/ad0s1a
mountmsdosfs(): bad FAT32 filesystem
mountmsdosfs(): bad FAT32 filesystem
cd9660: Joliet Extension (Level 3)
cd9660: Joliet Extension (Level 3)
cd9660: Joliet Extension (Level 3)
cd9660: Joliet Extension (Level 3)
cd9660: RockRidge Extension
pid 2534 (dd), uid 2 inumber 70969 on /: filesystem full
pid 2555 (dd), uid 2 inumber 70977 on /: filesystem full
pid 2583 (dd), uid 2 inumber 70981 on /: filesystem full
mountmsdosfs(): bad FAT32 filesystem
mountmsdosfs(): bad FAT32 filesystem
mountmsdosfs(): bad FAT32 filesystem
<etc...>