OSDev.org

Hello guys,

I'm super new to OS development.

I made a simple 512-byte "Hello World" bootloader with nasm and I loaded the binary file into a virtual floppy disk in Virtual Box and it worked.

Then I wanted to made an .iso image from the binary file. Using the instructions given on this topic, I managed to make an .iso and then loaded it into a virtual CD drive on Virtual box and again it worked perfectly.

But now when I try to use the same .iso in VMWare Workstation, the virtual machine boots but it shows a blank screen with a blinking white cursor indefinitely and does not show my "Hello World" string at all. To make sure that my string is not even displayed briefly, I captured desktop and then played the video frame by frame and nothing appeared but the same blank screen.

I attached the screen capture in case it is useful.

It's probably a bug in your code. For example, you might have forgotten to initialize a segment register or clear the direction flag.