Managing multiple operating systems on a single computer

Inactive Publication Date: 2001-01-23
CA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is little support for graphical user interface ("GUI") operations at boot-time before an operating system comes up.
Operations that would be straight-forward after booting, such as generating and displaying graphical lines, pictures, and fonts, are often much harder at boot-time because the operating system and standard graphics programs and libraries are not available.
Supporting fonts poses a particular challenge.
Rendering fonts can be difficult, especially when multiple language versions of the software are required.
In particular, challenges are posed by non-ASCII character sets, including double-byte character sets such as Japanese, Chinese, Korean, Arabic, and Hebrew.
I

Method used

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  • Managing multiple operating systems on a single computer
  • Managing multiple operating systems on a single computer

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Embodiment Construction

Single Boot Menu

One embodiment of the invention includes boot management support files 134 and the boot management program 136. The boot management program 136 can obtain an operating system boot option selection from the user without presenting the user with multiple selection mechanisms such as arrow keys, the Enter key, function keys, and menu numbers (indicated by numeric keys). The boot management program 136 hides this inconsistent tangle of selection mechanisms. By using key stuffing and other techniques, the boot management program 136 presents the user instead with a single selection mechanism in the form of a single menu (such as a menu 604) for all of the operating systems and operating system modes available on a given computer 102.

The invention allows one to eliminate the steps of booting Windows 95 from the NT menu and booting DOS from the Windows 95 menu. Instead, each of those operating systems 100 can be added to a boot management program menu such as the menu 604. Thi

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Abstract

The invention addresses the management of multiple operating systems on a single computer and other boot-time problems. A boot-time graphical user interface is described, including support for menus, tabs, non-ASCII characters, and other graphical user interface components in the pre-boot environment. Approaches to organizing the storage and selection of multiple operating system are also presented, including the use of multiple directories which are identified in operating system boot sectors.

Description

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Claims

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Application Information

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Owner CA TECH INC
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