4. DOS ASPI DRIVERS & UTILITIES
DC-390 Series User’s Manual
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Using the /d option, you have the ability to reserve up to 9 logical drives for each SCSI
device. However, you must keep the total number of partitions (logical drives) reserved by
the driver to within 16. This option is important for removable media devices. If you do not
reserve enough logical drives for your removable media, some of the logical drives may go
unrecognized. To install, add a line after ASPI driver in the CONFIG.SYS:
DEVICE=C:\ASPI\ASPI.SYS
DEVICE=C:\ASPI\TRMDISK.SYS /d n1 n2 n3 ... n8
•
n1 logical drives are reserved for 1st physical drive
n2 logical drives are reserved for 2nd physical drive
.
.
n8 logical drives are reserved for 8th physical drive
•
The value of nx (x = 1 .. 8) ranges from 0 to 9
•
nx=0: DC-390 scans the number of logical drives automatically
•
The order of drives starts from primary partition to secondary and SCSI ID 0 to 7
•
It is recommended that DOS 4.x or higher be used. For DOS 3.x, logical drive capacity is
limited to 32M bytes.
•
The logical drive scanning sequence of TRMDISK.SYS starts with adapter #0 - SCSI
ID=0 - primary partition, then moves on to the extended partition.
Example
The following is an example of the scanning sequence with two DC-390s installed. The first
one (adapter 0) controls two floppy drives, two BIOS INT 13H controlled SCSI HDDs, one
MO device with three logical partitions (drives), and one SCSI HDD. The second adapter (1)
controls one SCSI HDD with one primary partition that is seen as logical partition G:. The
CONFIG.SYS would look like this:
DEVICE=C:\ASPI\ASPI.SYS
DEVICE=C:\ASPI\TRMDISK.SYS /d300
Drive A:
Floppy drive
Drive B:
Floppy drive
Drive C:
Adapter 0, SCSI ID 0 (BIOS INT13h controlled HD)
Drive D:
Adapter 0, SCSI ID 1 (BIOS INT13h controlled HD)
Drive E:
Adapter 0, SCSI ID 4, Primary DOS (MO)
Drive F:
Adapter 0, SCSI ID 4, Extended DOS Logical drive (MO)
Drive G:
Adapter 0, SCSI ID 4, Extended DOS Logical drive (MO)
Drive H:
Adapter 0, SCSI ID 5, Primary DOS (HD)
Drive I:
Adapter 1, SCSI ID 2, Primary DOS (HD)
