I would like to know all the operations in DOS ,,,,,,,,,,,,, 20

Common Commands:

1. Disk operation fdisk parameters mbr rebuild master boot record fdisk mbr rebuild master boot record (can wash out the restore wizard) format parameters: q quick format u unrecoverable autotest does not prompt s s to create ms-dos boot disk format c: q u autotest autotest automatically and quickly format c disk (dangerous!)

2. Directory operation dir [directory name or file name] [ s][ w][ p][ a] List directory parameters: s Find subdirectories w Show only file name p pagination A Show hidden files dir s Find the files of the disk and report the location cd [directory name] ps: You can use relative directory or absolute directory Enter the directory cd aa Enter the aa directory under the current folder, cd .

Go to the previous folder cd and return to the root directory; cd c: windows go to c: windows folder mkdir [directory name] create directory mkdir helloworld create helloworld directory.

3. File operation Delete the directory and its files: rmdir [directory name or file name] [ s][ w][ p][ a] . Example: rmdir c:

qqdownload s deletes the qqdownload directory of the C drive. del [directory name or file name] [ f][ s][ q] delete Parameters: f Delete read-only file s Delete the directory and all the content under it q Don't confirm del c:

del s q automatically delete the del directory of the c drive copy [source file or directory] [target directory] copy file copy d: pwin98 *c:

Presetup Copy all the files of PWIN98 from drive D to presetup from drive C.

4. Memory operation debug debug memory parameter -w [file name] write binary -o [address 1] [address 2] output memory -q exit exp:o 70 10[return] o 71 01 [return] 01[return] q[return] change the memory from 70 to 71 to 01 to clear the awardbios password. Debug can also crack hard disk protection cards, etc., but it can only be used under pure DOS.