WINDOWS 1002000 PROFESSIONAL RESOURCE KIT [Electronic resources] نسخه متنی

Installing a Multiple-Boot Operating System

You can configure Windows 2000 Professional to start with other operating systems, such as Windows 2000 Server, Windows NT, Windows 95, Windows 98, Windows 3.x, MS-DOS, and OS/2. This section discusses how you can set up Windows 2000 Professional as a multiple-boot system with the following operating systems:

Windows NT 4.0 and Windows NT 3.51

Windows 95 or Windows 98

MS-DOS or Windows 3.x

IMPORTANT

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Each operating system in a multiple-boot configuration must reside in its own partition. Windows 2000 Professional does not support a multiple-boot system that shares the same partition with another operating system.

Multiple-Boot Considerations

Before you set up a multiple-boot configuration between Windows 2000 and another operating system, you need to consider certain precautions, as described in Table 6.4.

Table 6.4 Multiple Boot Considerations

If you need a multiple-boot configuration between Windows 2000 and Windows NT, Windows 95, or Windows 98, install the applications while you are running each of the operating systems to ensure that the applications are included in the registry for all the operating systems.

File System Considerations

Each operating system in a multiple-boot configuration can use one or more file systems to organize data on partitions. Operating systems that use the same file systems can share volumes, so a user can see files in shared partitions from different operating systems.

For more information about the NTFS and FAT file systems, see "File Systems" in this book.

Additional file system considerations include:

NTFS partitions are not available to users running Windows 95, Windows 98, Windows 3.x, or MS-DOS.

A computer that is configured with Windows 2000, Windows NT, Windows 95, and Windows 98 can see long file names on a FAT16 volume.

Windows 2000 Professional can support multiple-boot configurations between one or more instances of Windows 2000 and additional operating systems in separate partitions on the same computer.

This section describes the configuration details involved when you start Windows 2000 Professional with MS-DOS.

Bootsect.dos

Bootsect.dos is a file with the hidden, system, and read-only attributes that Ntldr uses when the computer is configured to start MS-DOS, Windows 3.x, and Windows 95 or Windows 98.

If there is an existing MS-DOS-based operating system, Windows 2000 Setup copies the boot sector on the active partition of the computer to Bootsect.dos and replaces the original boot sector on the active partition with its own boot sector.

When the computer is started, the active partition that contains the boot sector code starts Ntldr, which loads and displays the boot loader screen from Boot.ini. From the boot loader screen you can choose to start Windows 2000 Professional or another operating system.

If you select an operating system other than Windows 2000 Professional, Windows NT 4.0, or Windows NT 3.51, Ntldr loads ands passes control to Bootsect.dos, which then loads the other operating system.

Configuring a Multiple-Boot System with MS-DOS

If you are going to set up Windows 2000 with a multiple-boot system that includes MS-DOS, it's a good idea to install MS-DOS before installing Windows 2000 Professional. If MS-DOS is installed after Windows 2000, the boot sector is overwritten with the MS-DOS boot sector and you can no longer start Windows 2000 Professional.

If you have already installed Windows 2000 Professional and you want to install MS-DOS on another partition, you can install MS-DOS and then restore the Windows 2000 boot sector by using the Emergency Repair Disk (ERD). For more information about repairing the boot sector, see "Troubleshooting Tools and Strategies" in this book.

Configuring a Multiple-Boot System with Windows 95, Windows 98, or Windows NT 4.0.

You can configure Windows 2000 Professional as a multiple-boot system with Windows 2000 Server, Windows NT 4.0, Windows 95, or Windows 98.

If you plan to set up a multiple-boot system with Windows 95, Windows 98, or Windows NT 4.0, install Windows 95 or Windows 98 before installing Windows NT or Windows 2000 because Windows 95 and Windows 98 sometimes replace the Windows 2000 Professional boot sector with their own boot sector.

Configuring a Multiple-Boot System with Windows 2000 Professional, Windows NT, Windows 95 or Windows 98, and MS-DOS

You can configure a computer with a multiple-boot system that includes MS-DOS, Windows 95 or Windows 98, Windows NT, and Windows 2000 Professional, if each operating system resides in its own partition. You need to install the systems in the following order:

MS-DOS

Windows 95 or Windows 98

Windows NT

Windows 2000 Professional

If you are already running a multiple-boot system with Windows 2000 Professional and MS-DOS, you can install Windows 95 or Windows 98.

To install Windows 95 or Windows 98 after installing MS-DOS

From the Start menu, click Shut Down.

In the Shut Down Windows box, click Restart and then click OK. The boot loader screen appears.

Under Please select the operating system to start, select MS-DOS.

Install Windows 95 or Windows 98 in a separate partition, following the standard installation procedures.

After the Windows 95 or Windows 98 installation has finished, restart the computer. With Windows 95, you need to run the Windows 2000 Professional repair process, and then replace the Windows 95 boot sector with the Windows 2000 boot sector. The Windows 2000 boot loader screen allows you to choose between Windows 2000 Professional and MS-DOS. If you choose MS-DOS, Windows 95 or Windows 98 starts. For more information about editing the boot loader menu, see the section "Editing Boot.ini" earlier in this chapter.