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Utility Descriptions 5-61
SYS
The SYS command copies the ROM-DOS system files ROM-DOS.SYS
and COMMAND.COM from the disk in the default drive to the disk in the
specified drive. The file ROM-DOS.SYS is renamed and stored on the
disk as files IBMBIO.COM and IBMDOS.COM, which are stored as hidden
files.
Syntax
SYS drive: [/options]
Remarks
Use the SYS command to transfer the ROM-DOS system files to a floppy
disk or hard disk. The disk can be a formatted blank disk or can contain
files; it is not necessary for the system files to be the first files on the
disk. The only requirement is that there is enough contiguous free space
on the disk for the new system files to be placed. If the disk already
contains system files, installing the new system files deletes the existing
files.
The command processor, COMMAND.COM, is also transferred to the disk
and does not need to be copied into the same contiguous space as the
system files.
You can run SYS three different ways. The first is to boot and run your
system with ROM-DOS. When you run the SYS command this way, SYS
copies the ROM-DOS system files and COMMAND.COM from the root
directory of the default/current disk drive.
The second method is to run SYS from the root directory of a disk drive
that has been previously prepared with the SYS command, but isn’t
booted and running. For example, you can run SYS from a bootable
floppy disk to copy the files to the hard disk without actually booting from
the floppy disk itself.