Since I don't think there is anything important in the root partition, I still try to reboot my computer to see what will happen. Very Lucky, my computer reboot normally. Thank you for all your suggestion.
But I still want to know what on earth mkswap does to the disk. IF it would rewrite the metadata, I don't think I can use this partition anymore. It also does not format the disk or even write anything. Really strange. Since if I want to use one partition/file as swap, I must run this command. But actually, it writes nothing. (Maybe this is the reason it gives no warning) --- Teng Wang -- [EMAIL PROTECTED] mailing list
