Some DOS commands to share with caution

Are you dazzled by the introduction of so many orders? The key to learning DOS is to practice all kinds of commands, but I have to give you a wake-up call, some orders to be careful, otherwise too late.

Del *.* Delete all files in current directory

[suggest] Use del *.* in C packing directory will make the computer can't find mouse, optical drive, can't use
Windows and cannot even start. In fact, using this command in any directory requires
Think hard.

deltree *.* Delete all directories and files under current directory

[Suggest] Use this command in the C-packing directory, then you have to make sure your mind is awake,
And you guarantee that this is necessary, but we don't think that under any circumstances should this
Sample Use this command. The use of deltree *.* in any directory will result in
Del *.* the same as even worse results. Beware of it! Beware of it!

Format c:/u formatted c disk

[Suggest] unless your hard drive is infected with a virus, or a real computer expert tells you to
Do this, otherwise do not format the C disk, it will cause you to lose all information, but also need
Take a few hours to reinstall all the software.

　Fdisk hard disk Partitions

[Recommended] When you partition a hard disk, be sure to let a person who has used this command to help you use it,
Otherwise you will lose all information, even the hard drive can not be used.

　Recover Overwrite Disk

[Recommended] After DOS 6 no longer has this command, if you are using the old version of DOS, advised
You do not use it at any time, except to destroy all the information on your hard drive
There's no other effect.