DOS (Disk Operating System)

Internal DOS Command

Internal DOS Command are those command which are loaded into the memory of Computer along with System files

(command.com,io sys,ms dos,sys)

There are less powerful commands

(dir,dir/w,dir/p,dir/s,date,time,volume,version,copy,md,cd,rd,path,copy con,rename,delete,type.etc)

command
1. cd - come back to the previous directory

2. md - making directory there command is used to new create directory

3. cd - changing directory this command is used to change existing directory

4. dir - display directory

5. rd - remove directory this command is used to remove existing directory

6. cd\ - to come to the root directory


External DOS Command

External command are those command which are not loaded into the memory of computer External DOS commands required separate files for execution

There are more powerful commands

(format,delete,edit,disk,scan disk,mode.etc)