I have increased the HD from the setting of VMware while the rhel was shut down. I increased it to 20 GB (before it was 5 GB). But the problem was There is no free allocated space !! please tell me how to increase hdd.
http://i.imgur.com/r41SJi3.png
if u see the pic, actually free space should be 21GB but its cylinder endeing in about 1000 not in 2100.