Frequently Asked Questions

How can I upload a file to the virtual machine ?

Click on the up arrow below the terminal. The file(s) will be copied to your home directory.

How can I export a file from the virtual machine ?

Use the export_file filename shell command.

How can I copy and paste data to the web terminal ?

To copy data, just select it with the mouse and use the "Copy" contextual menu (right click). To paste data, select the "Paste Here" area below the terminal and use the "Paste" contextual menu (right click).

Note: copy/paste of files is not supported.

Can I access to the network from the virtual machine ?

Yes it is possible. It uses the websocket VPN offered by Benjamin Burns (see his blog). The bandwidth is capped to 40 kB/s and at most two connections are allowed per public IP address. Please don't abuse the service.

Can I run the virtual machines with the standalone emulator ?

Yes. Use the VM Config URL provided in the Virtual Machine list. Then use it as configuration file for the standalone emulator, e.g.:
    x86emu https://bellard.org/jslinux/buildroot-x86-xwin.cfg

    riscvemu32 https://bellard.org/jslinux/buildroot-riscv32-xwin.cfg
  

Can I change the amount of RAM of the web virtual machine ? Can I change the size of the terminal ?

Yes. There are many options that can be selected just by adding parameters to the URL. For example:
https://vfsync.org/login.html?cpu=x86&url=https://vfsync.org/u/os/buildroot-x86&mem=128&cmdline=TEST%3d1

How to set the keyboard mapping in the X11 GUI ?

Use the menu available with the mouse right click. If your country is not listed, you can try to type the command:setxkbmap -layout x where x is the country code of your keyboard mapping.

If your keyboard is still not working correctly, it means your browser does not return the PC hardware keycodes needed to emulate a PC keyboard. You can still use the virtual keyboard (available in the right click menu).

How to set the keyboard mapping in the Windows 2000 demo ?

Right click on the EN icon near the clock (bottom right of the screen), select properties, add the wanted keyboard and select it.

If your keyboard is still not working correctly, it means your browser does not return the PC hardware keycodes needed to emulate a PC keyboard.

Alternatively, you can use the on-screen-keyboard (its icon is on the desktop).

Why is the [Alt] key not working as expected in Firefox ?

In older Firefox versions the [Alt] key is always intercepted by the browser to display the menu. Upgrade to a more recent Firefox version to have the problem fixed.

[Back to the VM list]