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Usage instructions

Policy editors

MOSH

To open MOSH, log into a user session, then press [Ctrl+Alt+T]
MOSH is a terminal UI (TUI) very similar to Cr3nroll.

  • Navigation is done with arrow or number keys
  • To return from a submenu to the main menu, either use the given Exit button or press [Ctrl+C]
  • To open a new tab, press [Ctrl+Shift+T]; to close the tab press Exit in the main menu
    • To close all tabs, press [Ctrl+Shift+W]

Warning

EXTENSIONS CAN SEE MOSH, they cannot see VT-MOSH though. Use the user policy editor to be able to toggle them off in chrome://extensions


Note

if you dislike MOSH, or need to turn it into regular crosh, just run the command touch ~/.givemecrosh as root.


VT-MOSH

Note

*F2 is usually the key to the right of the (←)Backwards/Left arrow key, usually being either (→)Forwards/Right arrow or (↻)Refresh key.

This varies across devices.

To open VT-MOSH via VT-2, press [Ctrl+Alt+F2]* on any menu and login as root or chronos.
VT-MOSH is a terminal UI (TUI) nearly identical to regular MOSH.

  • Navigation is done with arrow or number keys
  • To return from a submenu to the main menu, either use the given Exit button or press [Ctrl+C]

Tip

You can put a password on MOSH, VT-MOSH, and all VT(s) by running the command chromeos-setdevpasswd as root.

Troubleshooting

  • Unable to use a modmium recovery image due to FWMP
  • Disabling VT-MOSH
    • Run this command as root in MOSH: touch /usr/local/.defaultvt
  • Disabling critical update warnings
    • In some cases, you may want to prevent Modmium from checking if a critical update is available, or hide the warning. That can be done by running touch /root/.iamsecure as root in MOSH, it will completely disable the critical update checker.
    • (A common reason for disabling the critical update warnings would be when you are somewhere that has strict checking or flagging for modmium-related URLs, and you want to avoid triggering anything)