/x86-64-OperatingSystem

An Operating System based on x86-64 architecture.

Primary LanguageC

x86-64 Operating System

An Operating System based on x86-64 architecture.

1. Make a blank hard disk image

  • Before building our OS and make final image, we need a blank hard disk image, We will use bximage to make it with:

    • Size 100 megabytes.
    • Sector size is 512 bytes.
    • Kind of image is flat.

  • this is done by run image.sh script, the output image is boot.img file.

2. Build the OS

  • The OS using make to build final image.

3. Simulate the OS

  • To simulate the OS, we can use Bochs x86 Emulator 2.7, first generate a bochs configuration file (this is done automatically by run image.sh script). And then, make to build our OS. And finally run bochs command to start simulating.

  • The second option to simulate our OS is using QEMU, after build our OS with make, simply run command: qemu-system-x86_64 -cpu qemu64,pdpe1gb -hda boot.img

4. Mount the OS image to your computer

mount -t vfat boot.img /mnt/d/

5. Test the OS

  • Build & Mount image to the OS & Running:
make run
  • System booting look like:

image

  • List files in root directory with ls command:
ls.bin

image

  • You can create, edit, delete files on the image via command in your host, because the image was mounted to /mnt/d directory. For example:
echo "Test file system" > /mnt/d/test.doc
  • After that check the file content by our OS cat command:
cat test.doc

image

  • And also, you can run binary files by specifying the file name. For example, we need to run process4.bin program:
process4.bin

image

  • In addition, we have many features waiting for you to experiment :).

6. Test on the real machine

  • After build the OS, copy our image to the USB device:
sudo dd if=boot.img of=/dev/sdb
  • Plug the USB to your machine, booting it with the USB.

7. Building user program

  • Please build program with our C/C++ runtime library.