XCOPY Command: In computing, XCOPY is a command used on PC DOS, MS-DOS, OS/2, Microsoft Windows, and related Powered by www.testvitals.com 2018/11/11 19:52 operating systems for copying multiple files or entire directory trees from one directoryto another and for copying files across a network. XCOPY stands for extended copy,[1] and was created as a more functional file copying utility than the copy command found in these operating systems. XCOPY first appeared in DOS 3.2.
SYS Command: SYS is a command in Microsoft BASIC used to execute a machine language program in memory. The command took the form SYS n where n is a memory location where the executable code starts. Home computer platforms typically publicised dozens of entry points to built-in routines (such as Commodore's KERNAL[1]) that were used by programmers and users to access functionality not easily accessible through BASIC.SYS is an external command of DOS and Microsoft Windows 9x operating systems that is used to make an already formatted medium bootable. It will therefore install a boot sector capable of booting the operating system into the first logical sector of the volume. Further, it will copy the principal DOS system files, that is, the DOS-BIOS (IO.SYS or IBMBIO.COM) and the
DOS kernel(MSDOS.SYS or IBMDOS.COM) into the root directory of the target.