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DB:How to Uninstall Linux - openSUSE http://tr.opensuse.org/SDB:How_to_Uninstall_L

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SDB:How to Uninstall Linux

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Version: 4.4

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1 Concern2 Procedure

2.1 From SUSE LINUX 9.0

2.2 SuSE Linux 7.3 to 8.22.3 Up to SuSE Linux 7.22.4 Generic Method

3 Additional information:

Concern

You want to uninstall Linux entirely.




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Procedure

First, make a backup of all your important data! In case DOS or Windows 3.x/95/98/ME is also installedon your machine, create a system boot floppy for this operating system.

Note: If you do not have a functional SUSE LINUX installation, skip the following sections and proceed

with the instructions below under Generic Method.

From SUSE LINUX 9.0

Start the YaST2 Control Centerand selectHardware (from SuSE 9.1 on choose: System)-->Partitioning

1.

Delete all Linux partitions including the Linux swap partition. The extended partition "Win95Ext'd (LBA)" can also be deleted, provided it no longer contains any logical drives.

2.

Partitions of another operating system that were resized during the installation can be restored tothe original size in order to make use of the entire hard disk space. Select the partition whose size

you want to increase, click Resize, and select the new size with the slider. Confirm with OK.

3.

Complete all changes in the partitioning dialog with Nextand confirm the subsequent securityquery with Yes. The changes will be applied.

4.

To remove LILO or GRUB (if it is installed in the MBR), the original boot code that was in theMBR prior to the installation of SUSE LINUX can be restored. To do this, change to the followingYaST module:

Boot Loader Setup ->Reset (bottom right) ->Restore MBR of Hard Disk

5.

After a security query, the boot code in the MBR is rewritten. The partition table remains unmodified. If

another operating system is installed on your machine, it should boot automatically the next time themachine is powered on.

SuSE Linux 7.3 to 8.2

Start the YaST2 Control Centerand selectHardware -->Partitioning

1.

Delete all Linux partitions including the Linux swap partition. The extended partition "Win95Ext'd (LBA)" can also be deleted, provided it no longer contains any logical drives. Confirm thechanges with Next, and confirm the subsequent security query with Yes. The changes will be

applied.

2.

To remove LILO or GRUB (if it is installed in the MBR), the MBR must be rewritten. This can bedone with the fdiskutility of your alternative operating system. If you use DOS or Windows3.x/95/98/ME, boot the machine with a DOS rescue floppy and start fdiskwith:

3.

fdisk /mbr

The command for OS/2 is:




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fdisk /newmbr

SDB:Uninstalling the Boot Manager LILO from the MBR

Subsequently, you can boot your operating system without LILO or GRUB and repartition the freespace according to your needs.

1.

Up to SuSE Linux 7.2

Boot from the first boot CD as if it were a new installation and select the item Manualinstallationfrom the start menu. If this option is not available in previous versions of SuSELinux, enter manualat the boot prompt. Alternatively, you can use the included boot floppy.

1.

Select the language, screen resolution, and keyboard layout. Follow the new installation routineuntil you reach the point where the hard disk is partitioned. Then select:

Start installation / system -->Start installation/ update -->CD-ROM -->Yast1 - text based -->Installation using expert mode -->Installation settings -->Configure hard disk partitions.

2.

Delete all Linux partitions by pressing F4and confirm with Continue. A window reading "Writingnew partition table ..." will be displayed. After deleting the Linux partitions, abort the installationprocess by pressing Abortand reboot.

3.

To remove LILO or GRUB (in case it is installed in the MBR), the MBR must be rewritten. Thiscan be done with the fdiskutility of your alternative operating system. If you use DOS orWindows 3.x/95/98/ME, boot the machine with a DOS rescue floppy and start fdiskwith:

4.

fdisk /mbr

The command for OS/2 is:

fdisk /newmbr

If you use Windows 2000/XP, uninstall LILO or GRUB as described in the article SDB:Uninstalling theBoot Manager LILO from the MBR

Subsequently, you can boot your operating system without LILO or GRUB and repartition the freespace according to your needs.1.

Generic Method

Boot the rescue system (e.g., from the first SUSE LINUX CD). Log in to the rescue system as root(no password is required). The Linux partitions can be deleted with fdisk.

1.

First, get an overview of the partitions by entering:2.




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fdisk -l

The output might look as follows:

rescue:~ # fdisk -l

Disk /dev/hda: 255 heads, 63 sectors, 1655 cylinders

Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System

/dev/hda1 * 1 18 144553+ 82 Linux swap

/dev/hda2 19 1655 13149202+ f Win95 Ext'd (LBA)

/dev/hda5 19 22 32098+ 83 Linux

/dev/hda6 23 1655 13117041 83 Linux

Start fdiskin interactive mode by entering the device name of the hard disk as a parameter. Forexample, if the hard disk to edit is connected as primary master (as in the above example), enterthe following command:

1.

fdisk /dev/hda

fdisk supports the following options:1.

m list the available commands

p list the partitions

d delete a partition

q quit the program WITHOUT saving changes

w save the changes and exit fdisk These commands can be used to delete the Linux partitions (ID 83)

To remove LILO or GRUB (if it is installed in the MBR), the MBR must be rewritten. This can bedone with the fdiskutility of your alternative operating system. If you use DOS or Windows3.x/95/98/ME, boot the machine with a DOS rescue disk and start fdiskwith:

1.

fdisk /mbr

The command for OS/2 reads

fdisk /newmbr

If you use Windows 2000/XP, uninstall LILO or GRUB.

Subsequently, you can boot your operating system without LILO or GRUB and repartition the freespace according to your needs.1.

Additional information:

If you want to delete ALL partitions, you can overwrite the MBR. Just to make sure: The followingprocedure overwrites the MBR completely with zeros, i.e. the partition table along with all data on thehard disk will be deleted.




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Proceed as follows:Start the rescue system from the SUSE LINUX CD (or boot floppy), log in as root, and enter thefollowing command:

dd if=/dev/zero of=/dev/hda bs=512 count=2

Subsequently, a new MBR can be created with the fdisk of DOS:

fdisk /mbr

or, in the case of OS/2, with:

fdisk /newmbr

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