Avago Technologies LSI20160 - Manual (Page 141)

About the SYMDISK.SYS Driver 6-15
Copyright © 1993–2001 by LSI Logic Corporation. All rights reserved.
/UNITS Allows the use of removable media, such as cartridge hard drives, each of which might
have a different number of partitions. If media with more than one partition are used, set
this option to the maximum number of partitions on any one media.
LSI Logic recommends that you use this option when using removable media with
more than one partition.
To use this option, the line in the CONFIG.SYS file that loads SYMDISK.SYS should look
like this (all on one line):
DEVICE=C:[PATH]SYMDISK.SYS /UNITS=path:id:lun:num_units
[,path:id:lun:num_units]*
For example, if a removable media drive is at SCSI ID 2 on the first host adapter and
you need to reserve three partitions, the command line should look like this:
DEVICE=C:[PATH]SYMDISK.SYS /UNITS=0:2:0:3
When SYMDISK.SYS initializes, it defaults to either:
One drive letter for a removable media device with no media present.
-or-
The number of partitions found on the media in the removable media device.
The full path , id , lun , and num_units values are required for this option. Also,
24 devices is the standard limit of devices.
/SSIZE Allows you to change the default sector size. The SYMDISK.SYS device driver defaults
to the largest sector size found during boot, handling all different sector sizes found.
In the case of removable media,
SYMDISK.SYS assumes a 2048-byte sector size when
no media is present. This option overcomes this limitation. To use this option, the line
in the
CONFIG.SYS file that loads SYMDISK.SYS should look like this:
DEVICE=C:[PATH]SYMDISK.SYS /SSIZE=512|1024|2048|4096
For example, if a removable media drive is used that has a sector size of 2048-bytes,
the command line should look like this:
DEVICE=C:[PATH]SYMDISK.SYS /SSIZE=2048
If SYMDISK.SYS comes across a sector size larger than the one specified in this option,
or if it finds a sector larger than the default, it refuses to read/write to that media. This
driver reports an invalid media error to DOS.
Table 6.2 SYMDISK.SYS Command Line Options (Cont.)
Option
Name Description