HOW TO CREATE BOOTABLE USB :-

This is one of the best software for creating bootable usb drives.

-freeware
-supports all WinOS and sysLinux bootable media creation
-provides environment to test bootable usb disks

To make a Windows Vista/7/8/8.1 bootable usb, follow given steps :-

1.Install the setup.

2.Insert the usb which you want to make bootable.

3.Start the RMPrepare USB application.

4.The name of the usb will be shown on the top box(Drives option).

5.Select the appropriate USB if multiple options are shown.

6.In "4.File System and Overdrives", check on the box "NTFS" and tick on

    "Boot as HDD(C:2PTNS)".

7.Click on "6.Prepare Drive".

8.Now it will ask to run a command.Select yes.

9.After all the process is completed and control is on the RMPrepare window, check if the command

   completed successfully by looking on the right side of "Choose Source" button.

10.Last step is to copy all the items of the windows installation disk to the bootable usb.

Please note that after step 9,the usb is bootable and you can now copy any files on the usb whose 

boot file is managed by BOOTMGR(i.e. a file named 'bootmgr' is also included with the windows

installations file. Note that the bootable image created by AOMEI Backupper,discussed on previous

post, can also be mounted on the usb in a similar way as it contains 'bootmgr' file).

For making a Windows XP usb disk, you need to download a dll file namely NTLDR.dll from 

www.dll-files.com and then copy it to USB drive after making it bootable. To make an XP bootable

USB drive, you just need to select "XP/BartPE bootable[NTLDR]" in the "2.Bootloader Options" of 

RMPrepare USB and rest all the same as for Windows 8.

To download RMPrepare USB, click here.

Best Free Backup Software :-

With this software, you have the ability to restore all your backupped programs which were once working perfectly(you must already have a backup created previously). It's features are :-

--freeware.
--create self bootable drive
--create self ISO image for future use
--full system backup(backup of the operating system - this backup contains the OS bootloader)
--partition backup(backup of only a partition - note that this backup doesn't contain any bootloader)
--view contents of backup as read-only mode

Cons:

1.A backup can only be used on only the system on which it was created or on similar hardware.

To download it, click here.

Best Software For PC Maintenance :-

PRIVAZER is a good software for computer maintenance. It provides great features such as :-

--remove traces of private data from disk

--hard drive cleanup with steroids.

--optimal tool to clean PC.

--remove activity traces.

--special attention to deletion of sensitive data.

--boost system privacy and performance.

Totally free for commercial or private use......

To download click here.