How to add os manually to berryboot ? I download some OS from http://www.raspberrypi.org/downloads/ on windows computer and I want add to SD card for run multiple OS using one SD card. How to do that ? This is raspberry pi without connected to the Internet.
BerryBoot is designed to download prepared images from the internet.
If you are a linux user (or you want to dig into it), you can follow these instructions from the BerryBoot documentation to prepare the images yourself, then put the prepared image to a USB flash drive, plug it in the Raspberry Pi, boot up BerryBoot and add the image through Add OS > Install from USB stick.
If the raspberry pi is not connected to the internet, you can download the images here: http://sourceforge.net/projects/berryboot/files/os_images/