cant write on my msdos partition :/

[marlon corleone]

hi all. i have a msdos windows 98 2nd partition, when
im about to save a file to that particular partition,
i received this message: 

The file could not be save please check if you have a
write permission.

though i set rw in the fstab options, still i cant
able to write in msdos partition, i tried remounting
it by:  mount -o rw -t msdos /dev/ad0s1 /win98 

after that i try to write a file in the 2nd partition
but it wont write, hope anyone had a tip to fix this.
thanks

this is my fstab file:


# Device                Mountpoint      FStype 
Options         Dump    Pass#
/dev/ad0s2b             none            swap    sw    
         0       0
/dev/ad0s2a             /               ufs     rw    
         1       1
/dev/ad0s2f             /tmp            ufs     rw    
         2       2
/dev/ad0s2g             /usr            ufs     rw    
         2       2
/dev/ad0s2e             /var            ufs     rw    
         2       2
/dev/ad0s1              /win98          msdos   rw    
         0       0
/dev/acd0c              /cdrom          cd9660 
ro,noauto       0       0
/dev/acd1c              /cdrom1         cd9660 
rw,noauto       0       0
/dev/fd0                /floppy         msdos  
rw,noauto       1       1
proc                    /proc           procfs  rw





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