How can we avoid the 100 MB "System reserved" partition which gets created when installing Windows 7 or Windows 8 ?

This partition may look like it’s cluttering your drive and wasting space, but it performs important functions and removing it will free up almost no space. You should learn to ignore the partition — if you really don’t want it, you should prevent it from being created while installing Windows

However, you can actually do this from within the Windows installer. Just follow the following steps:

• Press Shift+F (TEN) While installing Windows to open a Command Prompt window.
• Type diskpart into the Command Prompt window and press Enter.
• Create a new partition in the unallocated space using the diskpart tool. For example, if you have a single drive in the computer and it’s completely empty, you can just type select disk0 and then create partition primary to select the first disk and create a new partition using the entire amount of unallocated space on the drive.
• Continue the setup process. Select the partition you created earlier when you’re asked to create a partition.

u can't it's work like a back up if u deleted it and i doubt about that u can do it may affect the windows or something like that