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For instructions, see Switch between stable, beta & dev software. If you successfully installed ChromeOS Flex but are experiencing an issue, switch one of the devices that’s giving you trouble to the Dev channel to see if the issue is resolved. See Boot device using the USB installer in the ChromeOS Flex installation guide. Reinstall ChromeOS Flex on the device.Update your BIOS to the latest version provided by your device manufacturer, if possible.When booting from USB in UEFI mode, you might need to select an EFI boot file.įor example, Boot from EFI file Removable Media EFI Boot boot圆4.efi.So, if the installation fails, try switching Boot Mode to Legacy instead. Some devices only successfully install ChromeOS Flex with Boot Mode set to Legacy.Set Boot Mode settings to UEFI, if available.If you were able to boot your device from the USB, but after a seemingly successful installation, it boots to black screen or lets you know that no OS was found, perform the following steps: Learn more Configure BIOS or UEFI settings (Windows and Linux) Note: ChromeOS Flex does not support most of the newer Mac models. If you’re experiencing long boot delays, try resetting the boot device or clearing logic board RAM. You might want to try setting your USB as the primary or first boot option. Check your BIOS or UEFI settings to make sure the ability to boot from USB is turned on.Try a different USB device as your installer, especially if it's a Sandisk.Try each different USB port on the device, including USB-3, USB-2, and USB-C. Make sure your device's USB ports are functional.If booting from USB boot fails, consider the following: For detailed steps, see the ChromeOS Flex installation guide. For non-certified models, follow the same steps that you take to install ChromeOS Flex on certified models.Read the notes and installation instructions that might apply to your model. Check the Certified models list for models that are similar to the one you intend to install ChromeOS Flex on.

Be aware that even fully functional non-certified devices might start having significant issues at any time. If you’re comfortable with the possibility of issues occurring, you can try ChromeOS Flex on non-certified models. Devices not on the certified models list are not eligible for Chrome Education or Chrome Enterprise support. While ChromeOS Flex might work on non-certified devices without any issues, we cannot guarantee stability, functionality, and performance across regular OS updates. For administrators who are familiar with BIOS and UEFI settings.Įven though Google only guarantees ChromeOS Flex on certified models, you can still install ChromeOS Flex on models that are not on our certified models list.