How to add two operating systems in one PC ?

Dual Booting Windows 7 and Windows 8

        This is a guide for installing multiple windows in one desktop. It has many advantages the primary one being the accessibility to different operating systems.To read more about advantages, disadvantages and tips relating two windows check this link :
http://yjdroidpc.blogspot.com/2015/05/advantagesdisadvantages-and-tips-to.html
For installing multiple windows you need to have separate partitions in your hard disk or sparate disks for different OS. If you don't have separate partitions follow this link:
http://yjdroidpc.blogspot.com/2015/05/how-to-create-partitions-in-windows-7.html
For installation of first OS check this Link:
http://yjdroidpc.blogspot.com/2015/05/how-to-format-and-reinstall-windows-7.html

Now follow these simple steps:

• First, insert your Windows 7 or 8 Boot Disk into your DVD drive and reboot your PC. While the PC is rebooting, you will be prompted ” Press any key to boot from CD…” Just press any key here

• After you press a key, windows will load installation files.

• Select your language, time and currency format and keyboard input (US)

• Click Install Now to proceed

• If you do, select I accept the license terms and click Next

•  Click Custom (Advanced)

• Select the Partition where you want to install Windows 7 or 8 (donot select the one in which there is already an OS) and click Next. You will need at least 5716mb free space.

• You can make your own choices for everything else. Only these two will affect the dual boot. After the installation is over, booting your PC will bring you to a menu where you can choose your operating system.

How to create Partitions in Windows 7 and windows 8?

  Guide to manage partitions:

      It easy to create partitions in Microsoft Windows 7 and windows 8. The Windows 7 Disk Management tool provides a simple interface for managing partitions and volumes. Same method should work for creating partitions in Windows 8. There are two stages in creating a partition:

• Shrink volume to create unallocated space for new partition:

(If you already have unallocated space then skip this step).Here’s an easy way to shrink a volume to free up space so you can create a new partition on your disk. To shrink a basic volume, simple volume, or a spanned volume:

1. Open the Disk Management console by typing diskmgmt.msc at an elevated command prompt.
   
   
2. In Disk Management, right-click the volume that you want to shrink, and then click Shrink Volume.
   
   
3. In the field provided in the Shrink dialog box, enter the amount of space by which to shrink the disk.
   
   
   
   The Shrink dialog box provides the following information:
   Total Size Before Shrink In MB Lists the total capacity of the volume in MB. This is the formatted size of the volume.
   Size Of Available Shrink Space In MB Lists the maximum amount by which you can shrink the volume. This doesn’t represent the total amount of free space on the volume; rather, it represents the amount of space that can be removed, not including any data reserved for the master file table, volume snapshots, page files, and temporary files.
   Enter The Amount of Space To Shrink In MB Lists the total amount of space that will be removed from the volume. The initial value defaults to the maximum amount of space that can be removed from the volume. For optimal drive performance, you should ensure that the volume has at least 10 percent of free space after the shrink operation.
   Total Size After Shrink In MB Lists what the total capacity of the volume in MB will be after you shrink the volume. This is the new formatted size of the volume.
4. Click Shrink.

Once you have unallocated space, you can use that space to create a new partition. 

• Creating Partitions:

1. In Disk Management’s Graphical view, right-click an unallocated or free area, and then click New Simple Volume. This starts the New Simple Volume Wizard.
   
   
2. Read the Welcome page and then click Next.
3. The Specify Volume Size page specifies the minimum and maximum size for the volume in megabytes and lets you size the volume within these limits. Size the partition in megabytes using the Simple Volume Size field and then click Next.
   
   
4. On the Assign Drive Letter Or Path page, specify whether you want to assign a drive letter or path and then click Next. The available options are as follows:
   
   
   
   Assign The Following Drive Letter Select an available drive letter in the selection list provided. By default, Windows 7 selects the lowest available drive letter and excludes reserved drive letters as well as those assigned to local disks or network drives.
   Mount In The Following Empty NTFS Folder Choose this option to mount the partition in an empty NTFS folder. You must then type the path to an existing folder or click Browse to search for or create a folder to use.
   Do Not Assign A Drive Letter Or Drive Path Choose this option if you want to create the partition without assigning a drive letter or path. Later, if you want the partition to be available for storage, you can assign a drive letter or path at that time.
5. Use the Format Partition page to determine whether and how the volume should be formatted. If you want to format the volume, choose Format This Volume With The Following Settings, and then configure the following options:
   
   
   
   File System Sets the file system type as FAT, FAT32, or NTFS. NTFS is selected by default in most cases. If you create a file system as FAT or FAT32, you can later convert it to NTFS by using the Convert utility. You can’t, however, convert NTFS partitions to FAT or FAT32.
   Allocation Unit Size Sets the cluster size for the file system. This is the basic unit in which disk space is allocated. The default allocation unit size is based on the size of the volume and, by default, is set dynamically prior to formatting. To override this feature, you can set the allocation unit size to a specific value. If you use many small files, you might want to use a smaller cluster size, such as 512 or 1,024 bytes. With these settings, small files use less disk space.
   Volume Label Sets a text label for the partition. This label is the partition’s volume name and by default is set to New Volume. You can change the volume label at any time by right-clicking the volume in Windows Explorer, choosing Properties, and typing a new value in the Label field provided on the General tab.
   Perform A Quick Format Tells Windows 7 to format without checking the partition for errors. With large partitions, this option can save you a few minutes. However, it’s usually better to check for errors, which enables Disk Management to mark bad sectors on the disk and lock them out.
   Enable File And Folder Compression Turns on compression for the disk. Built-in compression is available only for NTFS. Under NTFS, compression is transparent to users and compressed files can be accessed just like regular files. If you select this option, files and directories on this drive are compressed automatically.
6. Click Next, confirm your options, and then click Finish.
   
   

The Windows 7 Disk Management tool will now show the space configured as a new partition.

Advantages,Disadvantages and Tips to Multiboot

Here are the advantages and disadvantages of multiple windows in one PC and tips to multi-boot Windows 7 with Windows XP:

• Advantages of multi-boot
• Disadvantages of multi-boot
• Tips to multi-boot

Advantages of multi-boot:

        Having multiple operating systems can make troubleshooting easier and when you try something that doesn’t work with one operating system you can try it on the other. If you have installed Windows 7 over Windows XP on your system, you can execute programs in Windows XP that are not compatible with Windows 7.

Disadvantages of multi-boot:

       To use more than one operating system in your computer, you need to have plenty of hard disk space. If, for example you have a 120GB hard drive and have two operating systems installed, they will consume a lot of storage space, especially Windows 7. The only disadvantage will be slow performance, since Windows 7 does consume a lot of resources.

Tips to multi-boot:

•   In order for Windows 7 to operate alongside Windows XP you need to create another primary partition on your hard-drive.
•  To install Windows 7, you need to have a partition of 16 GB. You need to ensure the memory requirements of Windows 7 and Windows XP. 
• While installing Windows 7 and Windows XP on your computer, you need to have the device drivers that are compatible with both the operating systems. 
• You need to defragment your hard disk before creating a new partition. It may help prevent data loss.

HOW TO FORMAT AND REINSTALL WINDOWS 7

Windows 7 is far better than previous windows versions (XP and Vista). The install process is plain simple and easy to follow. Big Bravo! for Microsoft for this. Now, just follow these steps and you will install windows 7 in no time

You can Install Windows 7 via DVD Disk you’ve purchased or with bootable USB.

This post explains installing windows 7 with dvd disk.

– 31 steps total, every step is screen-captured

First, insert your Windows 7 Boot Disk into your dvd drive and reboot your PC

While the PC is rebooting, you will be prompted ” Press any key to boot from CD…” Just press any key here

After you press a key, windows will load installation files.

Windows 7 setup will start

Select your language, time and currency format and keyboard input (US)

Click Install Now to proceed

Setup will load for a min or two

Install Windows 7 - Setup is starting

If you do, select I accept the license terms and click Next

If you are upgrading from Windows Vista select Upgrade, if you had Windows XP you have to select Custom (Advanced). Upgrade from Windows XP to Windows 7 is not available. Click Custom (Advanced)

Select the Partition where you want to install Windows 7 and click Next. You will need at least 5716mb free space.

If you don’t have enough free space to Install Windows 7, you will receive the following warning

If that’s the case, you will need to format the partition where you previously had Operating System installed. WARNING: Formatting a partition will erase all existing data on the partition, proceed only if you have backed up all your files!

If you want to format the partition, go to Drive options

and format the partition where you want to install windows 7. Again, do this only if you have backed up your documents/files!

click format and then yes

After you press Next, Windows 7 Installation will begin. Approximately takes about 30 min to 1 hour to finish, depending on your computer speed.

After half an hour, setup is complete and windows 7 installation is almost finished. Few more minutes

Now your computer will reboot, since the Windows 7 DVD boot disk is still in the drive, the message press any key to boot from DVD will appear. We already did that, so this time DO NOT press anything. Just wait 5 sec and your PC will continue booting and finish installing your operating system.

Windows will continue booting and installing, almost there!

Finally!

Insert your name (this will be your windows username)

If you want to, insert password for your computer. ( Hey….you won’t forget it, right? :) )

Insert your Windows 7 product key and press Next

Do you want Microsoft Updates for your new operating system? It is highly recommend you know…! Select use recommended settings

It’s time for Time zone, select yours from the drop down menu

Depending on your location, select the appropriate network location.

If you have more than 1 computer, type homegroup password for sharing files. Make sure to remember it

Windows is finalizing your settings

Can you see the finish line ? Yup, we’re there

That’s it. Now insert your computer manufacturer drivers CD and install drivers. Also FYI, Windows 7 has great driver support, go to Start –> Control Panel –> Select View By = Small Icons –> Click Windows Update

Check for updates and click on optional updates, to see which drivers windows 7 found for your computer automatically.

                                                                                                                Bravo Its Done....