bashlor

http://www.instructables.com/id/How-to-install-OS-X-Mountain-Lion-on-your-PC-with-/ pretty big procedure but you get a Mac OS X on your 500$ PC :D

http://www.howtogeek.com/164570/how-to-install-android-in-virtualbox/

For windows 7 and higher versions: 1.open the command promt with administrator privilege. (Goto C:\windows\system32 and right click on cmd.exe, run as administrator)    2.Type bcdedit command   (you will get a list of the OS boot files) 3.copy the IDENTIFIER of the OS you want to delete from the boot menu 4.Type bcdedit /delete IDENTIFIER  For windows XP and lower versions: http://www.howtogeek.com/howto/windows/how-to-delete-modify-or-disable-an-incorrect-or-duplicate-entry-on-the-xp-boot-menu/

1. Download this file (b43) it includes the broadcom series drivers. 2. Extract the zip file b43 3. Copy the extracted file b43 to filesystem /lib/firmware unfortunately you wont be able to paste it and it will give an error permission denied. This is because you dont have the root privileges To grant root privileges through nautilus: 1.open the terminal and type sudo nautilus enter your password (it will open a folder through which you can modify the root contents) note:after this do not terminate the terminal running nautilus 2. Make a new folder in file system rename it to .config In .config make one more folder named nautilus path should look like filesystem/.config/nautilus 3.Copy the downloaded file b43 to the path filesystem/ lib/firmware it should be copied 4. open a new terminal window type sudo modprobe -V b43   (hit enter) enter your password (hit enter) (it will display module_init..............) this means you have successfully installed th...

1. l ocate the directory or drive: 2.  Find a file extension in a directory: 3. Delete files with a particular extension: 1. l ocate the directory or drive:   cd <path of the folder/drive> or   <drive letter>: for eg my virus is located in D drive, type: cd windows/system32 for eg my virus is located in D drive, type: D: 2.  Find a file extension in a directory:         dir *.<ext>  (restricted to a particular directory)          or         dir *.<ext> /s /p    (all files in folders and subfolders of a particular extension(drive): The  /s  option directs a search of all folders on the hard drive;  the  /p  option pauses the display   after each s creen  of text. Double-check everything <ext> extension for eg. you have to find all files(viruses) having extension .inf,  type: ...

MS-DOS basic concepts and commands with examples: https://drive.google.com/file/d/0B3e9v7xyGe0ubVBHWnpwUW1ZYnc/edit?usp=sharing MS-DOS simple commands with exmaples: https://drive.google.com/file/d/0B3e9v7xyGe0uVXhlbm9nb01EWWs/edit?usp=sharing

http://kanishkashowto.com/2013/09/03/how-to-install-kali-linux-in-virtualbox-step-by-step-guide/

Requirements: 1.ubuntu live cd or pendrive(consisting of ubuntu setup) http://www.ubuntu.com/download/alternative-downloads Procedure: 1.start up your computer 2.boot ubuntu linux cd 3.select the option try ubuntu option (DO NOT INSTALL UBUNTU  its not required) by selecting this option you do not install the system rather the ubuntu os is started via live cd or USB 4.In the ubuntu click on the folder ie the file explorer in the left panel 5.Goto the windows 7 system drive path : windows>system32> rename the magnify.exe as cmd.exe and rename the cmd.exe as magnify.exe (NOTE: While renaming you cant rename directly as both file cannot have same names  take a copy of both these files in any other folder in case you mess up ) 6. reboot the system and start windows 7.On the password screen you will see an ease of access (blue icon)  in the bottom left corner. click on it and select the magnifier click OK.(It will open the command prompt) 8.In ...

1.Run ubuntu in recovery mode 2.Select Root shell prompt type these things in the prompt: Ls /home ;shows username Mount -rw -o remount / Passwd <username>