GRUB_DEFAULT

[elk dolk]

Hi all,

Just installed Ubuntu 11.04 ,I have a dual boot box and want to set Windows Xp as default OS . I try to edit /etc/default/grub
and change GRUB_DEFAULT to 4
---------------------------------------------------------------------------------
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=4
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
---------------------------------------------------------------------------------------------------------


and when I save it,  gedit gives the following error:

******@DeepBlue:~$ sudo gedit /etc/default/grub
[sudo] password for *******: 

(gedit:1511):
 Gtk-WARNING **: Attempting to store changes into 
`/root/.local/share/recently-used.xbel', but failed: Failed to create 
file '/root/.local/share/recently-used.xbel.SQ21UV': No such file or 
directory

what is the problem?