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Dos command formAT command - disk format command

formAT——Disk Format Command 1. Function: format the disk, divide the track and sector; at the same time check the entire disk for defective tracks, mark the bad track; establish the directory area and file allocation table, so that the disk is ready to receive DOS . 2. Type: External command 3. Format: formAT[/S][/4][/Q] 4. Instructions for use: (1) The drive letter after the command is not allowed by default. If the hard disk is formatted, the following prompt will be displayed: WARNING:ALL DATA ON NON——REMOVABLE DISK DRIVE C:WILL BE LOST ! Proceed with format (Y/N)? (Warning: All data will be lost on the C drive. Do you want to continue formatting?) (2) If the floppy disk is formatted, the following prompt will be displayed: Insert mew diskette for drive A; and press ENTER when ready… (In the A drive, insert a new disk, press the Enter key when you are ready). (3) Select the [/S] parameter, copy the DOS system files IO.SYS, MSDOS.SYS and COMMAND.COM to the disk, so that the disk can be used as a DOS boot disk. If the /S parameter is not selected, the formatted disk can only read and write information, but not as a boot disk; (4) Use the [/4] parameter to format a low 360KB in a 1.2MB high-density floppy disk drive. Density disk; (5) Select [/Q] parameter, fast format, this parameter will not re-divide the disk's magnetic appearance and sector, only the disk root directory, file allocation table and boot sector clear It is blank, so formatting is faster. (6) Select the [/U] parameter to indicate unconditional formatting, that is, destroy all data on the original disk. If you do not add /U, it is safe to format. At this time, create a mirror file to save the original FAT table and root directory. If necessary, use UNFORRMAT to restore the original data.

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