62 Disk Drives and Files
MX2 Reference Guide E-EQ-MX2RG-L-ARC
Drive B
Drive B is a disk image that is located in flash. A read-only drive, it is intended to be used to store
mandatory utilities and initialize the boot process. During normal use this drive will not be
updated. Drive B has no subdirectories.
See Chapter 4, “Commands”, for ROM-DOS command syntax.
AUTOEXEC.BAT the second file in the startup sequence.
CFGDEV.SYS the system-parameter-configuration device driver.
CFGIO.EXE the utility for loading fonts and keypad layouts.
COMIO.COM the utility for redirecting input and output to the serial port.
COMMAND.COM the DOS shell.
CONFIG.SAF the second file in the safe-boot sequence.
CONFIG.SYS the second file in the boot sequence.
COREUPD.COM the utility that updates the firmware image.
DECODE.SYS the bar-code-decoding device driver.
FLASHDSK.SYS the resident flash disk device driver.
FORMAT.COM the disk-reformatting utility.
FUNCTEST.COM the functional test for system components.
HIMEM.SYS the device driver for accessing extended memory.
LD.BAT the batch file for RESPONSE.BAT processing.
LOCK.COM the utility for locking or unlocking the resident flash disk and RAM
disk.
ORGANIZE.COM the utility for reorganizing flash disk data.
PM.COM the power-management utility.
REV.COM the utility that reports the firmware version.
UMBLINK.EXE the device driver for accessing upper memory blocks.
VDISK.SYS the RAM-disk device driver.
The CONFIG.SYS file will load the FLASHDSK.SYS driver to create the C drive and the
VDISK.SYS driver to create the D drive. It will then load DECODE.SYS and CFGDEV.SYS
before chaining to its counterpart on drive C. The AUTOEXEC.BAT file will chain to its
counterpart on drive C, except during a safe boot.
