International Business Machines Corporation

Charles R Dart, Ii

David C Linnell

Jin J Wu

William A Cavaliere

Donald D Williams

Stanley Leonard Merkin

Tibor L Bauer

James M Miller

Timothy H Freebern

A personal computer is BIOS configured to boot from an installed CD-ROM storing multiple operating systems in different partitions of the medium. The computer is initially booted from a user selected or default partition emulating a logical drive. With the original boot partition maintained active, emulation of additional partitions as other drives is performed when needed. This is accomplished in BIOS with multiple device tables, each dynamically associated with a logical drive letter. Hence, the system files found in only the original boot partition remain available to the system when other logical drives are called.

Bios dynamic emulation of multiple diskettes from a single media

In a computer operating a bootable CD-ROM or other bootable media having the capability of emulating one or more real drives, BIOS emulation parameters, such as drive number, memory partitioning and mapping are moved from BIOS and stored in a protected region of main memory. Upon a change of media, e.g., hard file, diskette, etc., as the computer undergoes a warm boot with new BIOS emulation parameters to enable DOS to process the change, the protected region of memory is not cleared. This preserves the BIOS emulation parameters which are restored to BIOS for the remainder of the boot sequence.

BIOS emulation parameter preservation across computer bootstrapping

A heat exchanger includes a housing, a reservoir comprising a solid material mounted within the housing, temperature control means for controlling the temperature of the reservoir, and energy exchange means for allowing thermal contact between the reservoir and a substance for effectuating transfer of energy from the reservoir to the substance for regulating the temperature of the substance.

Heat exchanger

An apparatus for producing aerosol from a substance includes a heat exchanger for receiving and cooling a substance. The heat exchanger includes a housing; a cryogenic reservoir comprising a solid material mounted within the housing; temperature control means for controllably cooling the reservoir; and energy exchange means for allowing thermal contact between the reservoir and the substance for effectuating transfer of cooling energy from the cryogenic reservoir to the substance for controllably cooling the substance. A delivery line has an inlet for receiving the substance from the heat exchanger at a first pressure. A nozzle is connected to the delivery line for receiving the substance from the delivery line. The nozzle has at least one exit opening which allows passing of the substance therethrough for expanding the substance from the first pressure to a second pressure which is lower than the first pressure for solidifying the substance and producing aerosol. Condensation preventing means is provided for preventing condensation from forming on the delivery line and/or on the nozzle.

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Coral Springs, FL, United States of America

Charles R Dart, Ii