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AR-B1474 User¡¦s Guide
5-3
5.2.4 SSD Drive Number (SW1-5 & SW1-6)
The AR-B1474 SSD can simulate one or two disk drives. You can assign the drive letter of the AR-B1474 by
configuring SW1-5 & SW1-6.
You can make the computer to boot from SSD by copying DOS into the SSD. If your SSD does not have DOS, the
computer will boot from your hard disk or floppy disk. In this condition, the SSD BIOS of AR-B1474 will set the
drive letter of the SSD to the desired drive letter automatically.
The AR-B1474 would simulate a single disk drive when only (FLASH) EPROM or SRAM (starting from MEM1
socket) is installed. The drive numbers with respect to the switch setting when the AR-B1474 simulates single disk
drives.
SW1-5 SW1-6 Occupies floppy disk number (SSD)
OFF (*) OFF 0 or 1 (Note 1)
ON OFF 0 or 2 (Note 2)
OFF ON 0
ON ON 0
Table 5-3 SSD Drive Number
NOTE: 1. If there is no DOS on this SSD, the disk number will 1 (B:). If any DOS is found by the AR-B1474 SSD
BIOS, the disk number will be 0 (A:) But, you can change the disk number from 0 to 1 by pressing the
<ESC> key during system bootup.
2. If there is no DOS on this SSD, the disk number will be 2 (C: or D: or…). If any DOS is found by the AR-
B1474 SSD BIOS, the disk number will be 0 (A:). But, you can change the disk number from 0 to 2 by
pressing the <ESC> key during system bootup.
(1) Simulate 2 Disk Drive
When (FLASH) EPROM and SRAM are both used on the AR-B1474, or you only have installed SRAM that does
not start from MEM1 socket, the AR-B1474 will simulate two disk drives. The drive numbers respect to those
switch settings when AR-B1474 simulates two disk drives.
Occupies floppy disk number
SW1-5 SW1-6
FLASH (EPROM) SRAM
OFF OFF 0 or 1 (Note 1) 2
ON OFF 0 or 2 (Note 2) 3
OFF ON 0 1
ON ON 0 2
Table 5-4 SSD Drive Number for Simulate 2 Disk Drive
NOTE: 1. If there is no DOS on this SSD, the disk number will be 1 (B:). If any DOS is found by the AR-B1474
SSD BIOS, the disk letter will be 0 (A:). But, you can change the disk number from 0 to 1 by pressing
the <ESC> key during system bootup.
2. If there is no DOS on this SSD, the disk number will be 2 (C: or D: or….). If any DOS is found by the
AR-B1474 SSD BIOS, the disk number will be 0 (A:). But, you can change the disk number from 0 to 2
by pressing the <ESC> key during system bootup.