DOS SYSTEM Command

DocumentID: 619366
Revision Date: 29-Feb-96 1:38:33 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Solutions: System Command Purpose: To transfer MS-DOS system files from one disk to another Formats: SYS D: (D=drive) The MS-DOS system files are two hidden files that form an integral part of MS-DOS. The files are described as hidden because you cannot list them with the DIR command. The system files must be contained at a specific location and in a specific order of a disk if you are to use the disk for booting. The SYS command is used to transfer the system files (IBMBIO.COM and IBMDOS.COM in IBM-DOS or IO.SYS and MSDOS.SYS in MS-DOS) from the disk in the default drive to the disk in the specified drive. The disk receiving the files must be either a blank formatted disk, a disk that has been formatted using the command FORMAT D:/S, or a disk formatted with the command FORMAT D:/B. If the disk is a blank formatted disk, SYS will be able to place the system files at the required location on the disk. If the disk has been formatted using either the /S or the /B option, the required location will have been allocated for the system files. Otherwise, SYS would be unable to correctly place the files. When transferring files with SYS, you should use your working copy of the system diskette. In the following example, a working copy of the system diskette is in drive A. With your diskette in place, type SYS and then type the letter designator of the drive containing the disk that will receive the system files: A:SYS C: System transferred You can update an MS-DOS system disk that contains an earlier version of MS-DOS (such as version 2.0) with the SYS command. The SYS command does not transfer COMMAND.COM to the target disk, but you can use the COPY command to copy the COMMAND.COM file. Using this command allows you to update MS-DOS on a formatted DOS disk with information on it and not lose that information.

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