Can't using fat32 drive as /tmp

[Lenik <lenik at bodz dot net>]

I'm used to using ramdisk (assigned to drive X:, FAT-32) as tmp directory,

    rm -fR /tmp
    ln -snf /cygdrive/x/TEMP /tmp

after I updated to cygwin 1.7 (2009.10.4), then startxwin failed.
(before update, my cygwin is 1.7 < 2009.7 )

/var/log/XWin.0.log:
    Welcome to the XWin X Server
    Vendor: The Cygwin/X Project
    Release: 1.7.1.0 (10701000)
    Build Date: 2009-10-25

    Contact: cygwin-xfree@cygwin.com

    XWin was started with the following command line:

    XWin -multiwindow -clipboard -silent-dup-error

    ddxProcessArgument - Initializing default screens
    winInitializeDefaultScreens - w 1280 h 1024
    winInitializeDefaultScreens - Returning

    Fatal server error:
    Can't read lock file /tmp/.X0-lock


The lock file isn't created in /tmp when error dialog pops.
(If I add -nolock to XWin in startxwin.sh, it says invalid option. )

And I don't know how to change the default permission of FAT-32 mounts,
though the permission looks good /cygdrive/x is "drwxr-xr-x", and I can 
create any files/directories in the /tmp (-> /cygdrive/x/TEMP) in bash.

If tried another harddisk (not ramdisk) formatted as FAT-32, get the 
same error.

Attachment: cygcheck
Description: Text document

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