# Issues on a Check Point Appliance when restoring to a factory default image of a Dual Image after an upgrade to R81.20

**Product**: Check Point Appliances  
**Version**: R81.20  
**OS**: Gaia  
**Last Modified**: 2023-05-21

## Symptoms

- Appliance with a Dual Image installed fails to revert to a Gaia snapshot with this error message:
  _revert to 'Name_of_Image' is not supported in the current version, please refer to sk180331_
- On an appliance with a Dual Image installed, the Gaia Boot Menu does not show the Secondary Image as a revert option.
- Appliance with a Dual Image installed cannot reboot after restoring to a factory default of a Dual Image.
- " _error: attempt to read or write outside of the disk 'lvm/vg_splat-lv_log'_" might appear in this scenario during boot on an appliance with a Dual Image installed:
  1. The administrator used CPUSE to upgrade/clean install to the R81.20 version.
  2. At some point, the administrator restored the appliance to the factory defaults to the secondary image (with the name "fcd_R<version_number>").
  3. The appliance cannot complete the boot.

## Solution

### Workflow

1. Revert to the primary factory default image.
2. Wait for the revert to complete.
3. Wait for the appliance to boot.
4. Revert to the secondary factory default image.

### Procedure

You can revert to the factory default image in one of these ways:

- **In Gaia Portal:**
  1. From the left, click the **Maintenance** section > **Factory Defaults** page.
  2. Select the primary factory image.
  3. Click **Apply**.
  4. Wait for the revert to complete.
  5. Wait for the appliance to reboot.
  6. From the left, click the **Maintenance** section > **Factory Defaults** page.
  7. Select the secondary factory image.
  8. Click **Apply**.
  9. Wait for the revert to complete.
  10. Wait for the appliance to reboot.

- **In Gaia Clish:**
  1. Connect to the command line in one of these ways:
      
      |     |     |
      | --- | --- |
      | Connection | Description |
      | Over SSH | Cannot show the CLI progress on the screen |
      | Through the Console port | Shows the CLI progress on the screen<br>See the [Getting Started Guide](https://support.checkpoint.com/results/sk/sk96246) for your model |
      | Through the LOM card | Shows the CLI progress on the screen<br>See the [Getting Started Guide](https://support.checkpoint.com/results/sk/sk96246) for your model |

2. Enter:
      
      `set fcd revert`
  3. Press the SPACE key and the TAB key to see the available default images.
  4. Run:
      
      `set fcd revert <Name of Primary Default Image>`
  5. Follow the instructions on the screen.
  6. Reboot:
      
      `reboot`
  7. Connect to the command line over the Console port or through the LOM card, if it is installed.
  8. Run:
      
      `set fcd revert <Name of Secondary Default Image>`
  9. Follow the instructions on the screen.
  10. Reboot:
      
      `reboot`

- **From the Boot Menu:**

See [sk109047 - How to enter the Boot menu on Gaia OS](https://support.checkpoint.com/results/sk/sk109047).
  1. Connect to the appliance through the Console port or through the LOM card, if it is installed.

See the [Getting Started Guide](https://support.checkpoint.com/results/sk/sk96246) for your model.
  2. Reboot the appliance.
  3. Press any key to get into the Boot Menu.
  4. Select the option to restore to the factory defaults with the primary image " **fcd_GAIA**".
  5. Wait for the revert to complete.
  6. Wait for the appliance to reboot.
  7. Press any key to get into the Boot Menu.
  8. Select the option to restore to the factory defaults with the secondary image " **fcd_R<version_number>**".

### Related Documentation

- [R81.20 Gaia Administration Guide](https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_Gaia_AdminGuide/Default.htm) > Chapter _Maintenance_ > Section _Snapshot Management_ > Section _Restoring a Factory Default Image on Check Point Appliance_.