I have installed dual os(XP and Ubuntu Linux 10) on same drive It is working but my pc became very slow. Now I want to uninstall any or both os but it is showing error. So suggest me How can I?

There should be no need to play around with your bios settings. Linux will install on a brand new hard drive as the sole operating system, or on an existing hard drive alongside Windows without any problem.

If you haven't already got a Linux distro, have a look at
http://www.ubuntu.com/download/desktop

Download whichever version of Ubuntu you prefer (LTS- the long term support version is recommended).

When the .iso file containing the operating system had downloaded, burn it onto a dvd, or install it on a usb drive.

Insert the dvd into the drive and restart or switch off/switch on the computer. The dvd will then kick in and offer you the choice of trying Ubuntu without installing, or a full install.

If you're using a new, empty hard drive just follow the on screen instructions and Ubuntu will install as the sole operating system.

If you already have Windows on your hard drive Ubuntu will give you the choice of either erasing Windows or installing Ubuntu alongside Windows. It's your choice.

Installing Ubuntu alongside Windows creates a dual boot hard drive. At start up you just choose which OS to use - Windows or Ubuntu. If creating this dual-boot system Ubuntu puts a (Linux) boot loader into the Windows OS so that Linux is recognised.

If you save the Ubuntu file to a usb drive you then have to change the bios settings so that your computer uses USB as the first boot device. Then restart your computer so that it boots in from your usb .. and Ubuntu will begin installing.

Whichever you use - dvd or usb - during the installation process Ubuntu will ask you how many GB of hard drive space it should use? You do not need to physically partition the hard drive. Linux will do it for you.

If it's a desktop PC you are using with Windows on the first hard drive and are fitting a second hard drive to install Linux on, or have installed Linux on the second hard drive .. and find that Linux doesn't appear at start up, it's because there's no Linux boot loader in Windows.

I quit using Windows many years ago.

Are you dual booting? Windows and Ubuntu? What version of Windows? You maybe able to reclaim the space by using the Disk Management (right click "My Computer" select Manage then select Disk Management). In there you will see NTFS for your Windows partitions, and something like Unknown for the linux ones, you can then delete the linux partition and possibly extend your NTFS partition to use the free space (depending on version of windows).
If this is a standalone Ubuntu install, you should be able to just use the installer disk for another OS and boot it to reformat the drive.
good luck!

You didn't say what OS you are using.

1.To try and remove the password protection you can power off the PC.
remove the side panel and then remove the battery. Leave it for 10 minutes, refit the battery and then power up the PC. The password protection may have been removed.

2. Or at start up, enter the bios settings. You may be able to disable the password from within the settings.

3. If you're not bothered which OS you use, try a new install of XP or Windows 7.

If you don't have XP or Windows 7, ask a friend to download linux and burn it onto a dvd for you(or put it onto a usb flash drive). Put the linux dvd into your dvd drive and restart the computer. You will have the choice of completely erasing Windows, or installing Linux alongside Windows.

Linux is free. It will do everything Windows can do. Linux comes with its own version of 'Office'. The best free versions of Linux are Ubuntu or 'Mint'.

You can download Ubuntu here: http://www.ubuntu.com/download/desktop

Webcams do NOT work in Linux. Apart from that, Linux will do everything Windows can do (but free!) and you won't ever get a virus.

do you want to make a dual-boot system? you must have installed windows OS first and leave a non-partitioned drive in your hard Disk. Then you can install Ubuntu next, instaling it to the non-partitioned drive. When the PC boots, you will be prompted to what OS to boot.

Anyway, you can Install Windows XP in any free Drive. But it is dangerous since Windows Installer might destroy your Ubuntu installation files.

Hi,
I would install XP 1st then Open suse or Ubuntu. When you install either of these linux OS's ensure you install to another partition other than the windows one. Both installation routines will allow you to format the drive to the linux ext2 format and automatically install a boot manager (usually GRUB) which will allow you to select the OS you wish to boot.

I have done it several times, and if you follow the steps on this site, very straight forward.

I really like Ubuntu, I think it works great and would recommend it.

http://apcmag.com/how_to_dual_boot_windows_xp_and_linux_xp_installed_first.htm

you can use virtual drive to install linux within windows os. you can download virtual drive for free look for virtual box version.

1st, install windows or if you have already its good .

Then, download Linux distribution that suits You better
Download It and burn into a CD or DVD with ISO file you can use Magic ISO or other manufacturer

then Go to BIOS setup and set 1st priority is the CD or DVD drive and save and exit

and install follow the instruction of linux.

also if you chose capacity of windows or linux is to little dont worry you can make install a partition magic and resize what you like....

PS:
pls rate me if my solution solve the issue and you need more further information. but if is invaluable solution rate me fixya.

It has the latest mouse driver (logitech setpoint 4.0). Before installing Ubuntu the setup worked w/ SUSE/XP using GRUB dual boot. After installing Ubuntu XP does not see the usb mouse. Even Logitech setpoint does not have the mouse setup/configuration option. It appears that at boot it does not recognize the mouse or disables it. The BIOS has the usb keyboard and mouse enabled. Currently, I have two mices one for xp and either mouse will work under Ubuntu.

possibly by first creating a new partition large enough for Linux OS, but does not solve your problem...try getting a VISTA startup disc from another pc (floppies if you have the drive) and startup from these.