After making a back up of the file, open /etc/fstab in a text editor with root permissions and look for a line with the following section of text:
relatime,errors=remount-ro
and replace it with this:
noatime,nodiratime,errors=remount-ro,data=writeback
Open /boot/grub/menu.lst and find the following two lines:
# defoptions quiet splash #altoptions=(recoverymode) single
They won't be next to each other, but once you find them append the following at the end of both those lines:
rootflags=data=writeback
then save and exit. Open up a root terminal and run update grub. You then have the option of simply restarting to apply these changes to your file system, or you can apply them on the fly by installing tune2fs from your package manager. If you choose the latter option you would then type the following into a root terminal:
tune2fs -o journal_data_writeback /dev/hda1
substituting /dev/hda1 with your root partition.
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