4.0

2 Assuming that the serial port speed is set appropriately in the guest operating system, experiment with
this setting by starting with a value of 100 and gradually decreasing it until you find the highest speed at
which the connection works reliably.
Configuring Generic SCSI Devices
The generic SCSI feature gives the guest operating system direct access to SCSI devices that are connected to
the host system, including scanners, tape drives, and other data storage devices. A virtual machine can use the
generic SCSI driver to run any SCSI device that is supported by the guest operating system.
To use SCSI devices in a virtual machine running on a Windows host system, you must run Player as a user
who has administrator access.
On Linux host systems, you must have read and write permissions on a given generic SCSI device to use that
device in a virtual machine, even if the device is a read-only device, such as a CD-ROM drive. These devices
typically default to root-only permissions. A Linux administrator can create a group that has read and write
access to these devices and add the appropriate users to that group.
Although generic SCSI is device independent, it can be sensitive to the guest operating system, device class,
and specific SCSI hardware.
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Add a Generic SCSI Device to a Virtual Machine on page 87
You must add a generic SCSI device to the virtual machine to map virtual SCSI devices on a virtual
machine to physical generic SCSI devices on the host system. You can add up to 60 generic SCSI devices
to a virtual machine.
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Install the BusLogic Driver in a Windows NT 4.0 Guest on page 88
Generic SCSI devices use the virtual Mylex (BusLogic) BT/KT-958 compatible host bus adapter provided
by the virtual machine. On Windows NT 4.0, you might need to install the driver manually if it is not
already installed for a virtual SCSI disk. Install the driver before you add a generic SCSI device.
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Avoiding Concurrent Access Problems for SCSI Devices on Linux Hosts on page 88
Player makes sure that multiple programs do not use the same /dev/sg entry at the same time, but it
cannot always ensure that multiple programs do not use the /dev/sg entry and the traditional /dev entry
at the same time.
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Troubleshoot Problems Detecting Generic SCSI Devices on page 89
When you add a generic SCSI device to a virtual machine, the device does not appear in the list of available
SCSI devices.
Add a Generic SCSI Device to a Virtual Machine
You must add a generic SCSI device to the virtual machine to map virtual SCSI devices on a virtual machine
to physical generic SCSI devices on the host system. You can add up to 60 generic SCSI devices to a virtual
machine.
Prerequisites
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On a Windows host system, run Player as a user who has administrator access.
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On a Linux host system, log in as a user who has read and write permissions for the SCSI device. Also,
verify that version 2.1.36 or later of the SCSI Generic driver (sg.o) is installed. This version of the SCSI
Generic driver is included with Linux kernel 2.2.14 and later.
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On a Windows 95, Windows 98, or Windows Me virtual machine, install the latest Mylex (BusLogic)
BT/KT-958 compatible host bus adapter. This driver overrides the driver that Windows chooses as the best
driver, but it corrects known problems. You can download the driver from the LSI Web site.
Chapter 6 Configuring and Managing Devices
VMware, Inc. 87