Can't write to FAT drive from network (SOLVED)

[GeoffS]

I know I've been here before but I can't find or remember what I did to fix it.
My data lives on a VFAT partition.
I've been away, I've not been using the network and I've changed many things since I last made use of my network - USB sticks are a great alternative.
I've got SAMBA running on the system (Puppy 2.16) that functions as a server.
I'm running XP on another system and need to access that VFAT partition.
I can read the data but I can not write to it - "Access is denied".
I've no security enabled, I don't get any messages about passwords.
Not hard to find references to similar problems under various Linux distributions but the fixes always involve other 'users' and don't apply to Puppy where we are always running as 'root'.
I've tried every option in smbr.conf that I can find but I'm obviously missing the important one or is the 'fix' elsewhere?
I've tested various options in the mount command.
I don't have access to the smbd.conf file at the moment but I'll add it to this post if nobody can think of anything obvious.

Any suggestions anyone?
Cheers
Geoff

[8-bit]

Did you check sharing on the directory that is shared on the XP machine to see if it is set up as read/write or read only.
It's just a thought.

[GeoffS]

to the power of 100
Thanks 8-bit. Just too obvious wasn't it but:-
(a) when did sharing get turned off?
(b) a bit of a trap, SAMBA allowed me to see and read the partition. The absence of sharing wasn't that obvious.
I had to boot Windows of course to turn sharing on.
I do believe that I could have turned on the relevant bit from Puppy but I have no idea how. 'chmod' doesn't seem to do it.
Thanks again
Geoff