To load any type of operating system (windows, linux, unix etc) over network

To load your desired operating system (like windows 7, xp, linux etc) you need the following things-

a.       The computer on which you want to load the operating system (eg windows).

b.      A second computer to work as server.

c.       A LAN cable to connect the both computers.

d.      Complete set of OS setup files which you want to load.

e.      Serva software for your server computer, which you can download from here(down loadserva software).
 There are two versions one is supporter and other is non-supporter , you can download any of these. I use non-supporter.

f.        Your source (server computer/laptop) must have a password . blank password will not work.

FOR installation do the following

1.       Unzip the downloaded SERVA software to a specified directory(eg D:\serva).

2.       Also make a folder D:\servaroot.

To change hostid

if you want to change the hostid of a Linux machine then do the following-
1. If there exists a file /etc/hostid , , then go to step 3.
2. If the file dose not exist then create a text file /etc/hostid by following command-
    #cd /etc
    #gedit (a text editor will open )
    now save this file with name hostid id under /etc. OR use any other method to create the /etc/hostid file.
3. Now let you want the hostid should be 12345678, then type the following command in terminal
     # sudo su echo \\78\\56\\34\\12 >/etc/hostid.
to check the hostid type the following command in terminal .

hostid
It will give value of hostid : 12345678.