Unable to access Windows folder

Question

I have just installed Oracle Unbreakable Linux, I am not able to access Windows folders when I boot into Oracle Linux.
[root@pc ~]# ls -l /mnt/win
total 0
My windows folders are present at /mnt/win mapped to /dev/hda1. This is shown in /etc/fstab
/etc/fstab
shows /dev/hda1 mapped to /mnt/win (defaults or auto,users,rw options don't work)
[root@pc ~]# cat /etc/fstab
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/hda1 /mnt/win vfat auto,users,rw 0 0
even tried to mount manually, but failed
[root@pc ~]# mount -t vfat /dev/hda1 /mnt/win
mount: /dev/hda1 already mounted or /mnt/win busy
mount: according to mtab, /dev/hda1 is already mounted on /mnt/win
Tried to create my own entry. Created a directory disc and tried to mount it with /dev/hda1. disc shows no files.
[root@pc ~]# mkdir diskc
[root@pc ~]# mount -t vfat /dev/hda1 ./diskc
[root@pc ~]# ls -l diskc
total 0
Mount shows that /mnt/win is mounted on /dev/hda1
[root@pc ~]# mount
/dev/hda1 on /mnt/win type vfat (rw)
Please help

Answer 1

TommyReynolds:
[root@pc ~]# fdisk -l /dev/hda
Disk /dev/hda: 40.0 GB, 40060403712 bytes
255 heads, 63 sectors/track, 4870 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 1275 10241406 c W95 FAT32 (LBA)
/dev/hda2 1276 4870 28876837+ f W95 Ext'd (LBA)
/dev/hda5 1276 2550 10241406 83 Linux
/dev/hda6 2551 2563 104391 83 Linux
/dev/hda7 2564 4870 18530946 83 Linux
+++++++++++++++++++++++++
[root@pc ~]# cat /etc/fstab
# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
LABEL=/home /home ext3 defaults 1 2
/dev/hda1 /mnt/win vfat defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/hdc /media/cdrecorder auto pamconsole,exec,noauto,managed 0 0
/dev/fd0 /media/floppy auto pamconsole,exec,noauto,managed 0 0