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How to Remove Linux and Install Windows on Your Computer
Article ID: 247804 - View products that this article applies to.
This article was previously published under Q247804
For a Microsoft Windows XP version of this article, see 314458
This article describes how you can remove the Linux operating system from your computer, and install a Windows operating system. This article also assumes that Linux is already installed on the hard disk using Linux native and Linux swap partitions, which are incompatible with the Windows operating system, and that there is no free space left on the drive.
Windows and Linux can coexist on the same computer. For additional information, refer to your Linux documentation.
To install Windows on a system that has Linux installed when you want to remove Linux, you must manually delete the partitions used by the Linux operating system. The Windows-compatible partition can be created automatically during the installation of the Windows operating system.
IMPORTANT: Before you follow the steps in this article, verify that you have a bootable disk or bootable CD-ROM for the Linux operating system, because this process completely removes the Linux operating system installed on your computer. If you intend to restore the Linux operating system at a later date, verify that you also have a good backup of all the information stored on your computer. Also, you must have a full release version of the Windows operating system you want to install.
Linux file systems use a "superblock" at the beginning of a disk partition to identify the basic size, shape, and condition of the file system.
The Linux operating system is generally installed on partition type 83 (Linux native) or 82 (Linux swap). The Linux boot manager (LILO) can be configured to start from:
Examples of Linux Partition Tables
Single SCSI drive
Device Boot Start End Blocks Id System /dev/sda1 * 1 500 4016218 83 Linux native (SCSI hard drive 1, partition 1) /dev/sda2 501 522 176715 82 Linux swap (SCSI hard drive 1, partition 2)
Multiple SCSI drives
Device Boot Start End Blocks Id System /dev/sda1 * 1 500 4016218 83 Linux native (SCSI hard drive 1, partition 1) /dev/sda2 501 522 176715 82 Linux swap (SCSI hard drive 1, partition 2) /dev/sdb1 1 500 4016218 83 Linux native (SCSI hard drive 2, partition 1)
Single IDE drive
Device Boot Start End Blocks Id System /dev/hda1 * 1 500 4016218 83 Linux native (IDE hard drive 1, partition 1) /dev/hda2 501 522 176715 82 Linux swap (IDE hard drive 1, partition 2)
Multiple IDE drives
Also, Linux recognizes more than forty different partition types, such as:
Device Boot Start End Blocks Id System /dev/hda1 * 1 500 4016218 83 Linux native (IDE hard drive 1, partition 1) /dev/hda2 501 522 176715 82 Linux swap (IDE hard drive 1, partition 2) /dev/hdb1 1 500 4016218 83 Linux native (IDE hard drive 2, partition 1)
Another method of removing an operating system from the hard disk and installing a different operating system is to use an MS-DOS version 5.0 or later boot disk, a Windows 95 Startup disk, or a Windows 98 Startup disk that contains the Fdisk utility. Run the Fdisk utility. If you have multiple drives, there are 5 choices; use option 5 to select the hard disk that has the partition to be deleted. After that, or if you have only one hard disk, choose option 3 ("Delete partition or logical DOS drive"), and then choose option 4 ("Delete non-DOS partition"). You should then see the non-DOS partitions you want to delete. Typically, the Linux operating system has two non-DOS partitions, but there may be more. After you delete one partition, use the same steps to delete any other appropriate non-DOS partitions.
After the partitions are deleted, you can create partitions and install the operating system you want. You can only create one primary partition and an extended partition with multiple logical drives by using Fdisk from MS-DOS version 5.0 and later, Windows 95, and Windows 98. The maximum FAT16 primary partition size is 2 gigabytes (GB). The largest FAT16 logical drive size is 2 GB. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
105074If you are installing Windows NT 4.0 or Windows 2000, the Linux partitions can be removed and new partitions created and formatted with the appropriate file system type during the installation process. Windows allows you to create more than one primary partition. The largest partition that Windows NT 4.0 allows you to create during installation is 4 GB because of the limitations of the FAT16 file system during installation. Also, the 4-GB partitions use 64-KB cluster sizes. MS-DOS 6.x and Windows 95 or Windows 98 do not recognize 64-KB cluster file systems, so this file system is usually converted to NTFS during installation. Windows 2000, unlike Windows NT 4.0, recognizes the FAT32 file system. During the installation of Windows 2000, you can create a very large FAT32 drive. The FAT32 drive can be converted to NTFS after the installation has completed if appropriate.
(http://support.microsoft.com/kb/105074/EN-US/ )MS-DOS 6.2 Partitioning Questions and Answers
Article ID: 247804 - Last Review: March 1, 2007 - Revision: 2.2