Here’s a concise write-up for the Chrome OS Rammus recovery image , suitable for documentation, a support ticket, or internal IT notes.
Chrome OS Rammus Recovery Image – Write-Up Overview The Rammus board is a Chrome OS device (commonly associated with the ASUS Chromebook Flip C434 ). A recovery image for Rammus restores the device’s original Chrome OS operating system, partitions, and bootloader. It is used when the OS is corrupted, fails to boot, or needs a factory-fresh state. Purpose
Fix boot loop, “Chrome OS is missing or damaged” error Remove malware or persistent system issues Revert developer mode (if desired) and restore verified boot Recover from failed OS updates or corrupted user data partitions
Requirements
USB flash drive (8 GB or larger) or SD card Another computer with internet access Chromebook Recovery Utility (Chrome extension) Rammus recovery image (official from Google’s recovery servers)
Recovery Image Source
Automatically fetched by Chromebook Recovery Utility when you enter the model “ Rammus ” Alternatively, direct download from the Chrome OS Recovery site – look for rammus board and the latest R79+ stable version. chrome os rammus recovery img
Steps Summary
Insert USB drive into a working computer. Open Chromebook Recovery Utility → Get started. Select “Rammus” from the list (or enter model number). Choose your USB drive – the utility downloads and writes the image. On the broken Chromebook: press Esc + Refresh (↻) + Power to enter recovery mode. Insert the USB when prompted – recovery proceeds automatically. After completion, remove USB and reboot.
Important Notes
Recovery erases all local data (user profiles, downloads, Linux container). Ensure the device is plugged in during recovery. If recovery fails immediately, the USB may be faulty or the wrong image – try a different drive or re-download the image. Rammus shares kernel config with other Chrome OS devices, but always use the board-specific image .
Verification After recovery, the Chromebook will restart, show a “Chromebook OS recovery complete” message, and boot into the initial setup screen (language/network/Google sign-in).