> Source: [sk92725](https://support.checkpoint.com/results/sk/sk92725)

# sk92725 - After setting Gaia kernel edition to 64-bit on VMWare Virtual Machine, kernel edition remains 32-bit

| Property | Value |
|----------|-------|
| Solution ID | sk92725 |
| Date Created | 2013-04-24 |
| Last Modified | 2022-08-08 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |
| Platform | VMWare ESX |

## Symptoms

- * After setting Gaia kernel edition to 64-bit on VMWare Virtual Machine and rebooting, kernel edition remains 32-bit.  

* Configuring VM Guest OS to RHEL5 64-bit before the Gaia OS installation does not make any difference.

## Cause

During Gaia OS installation onto Virtual Machine, the 64-bit kernel RPM (x86_64) is not installed. As a result, setting Gaia kernel edition to 64-bit fails.

## Solution

**Important: Starting from R80.20 there is no 32bit at kernel level anymore, only 64bit.**

Follow these steps:

1. When creating a new Virtual Machine, set the Guest OS to:   

   * Guest operating system: **`Linux`**   

   * Version: **`Red Hat Enterprise Linux 5 64-bit`**

   <br />

   <br />

2. Complete the Gaia OS installation.   

3. Reboot the Virtual Machine.   

4. Install the 64-bit kernel RPM (x86_64) manually from CD/DVD:   

   1. Go to Expert mode:   

      **`HostName> expert`**   

   2. In the Virtual Machine settings:   

      * Verify that the CD/DVD device is set to '`Connected`'.   

      * Verify that the correct ISO image file is chosen.

      <br />

      <br />

   3. Mount the CD/DVD device:   

      **`[Expert@HostName]# mount /dev/cdrom /mnt/`**   

      The following message should appear:  
      `mount: block device /dev/cdrom is write-protected, mounting read-only`   

   4. Go to the directory with all the RPMs:   

      **`[Expert@HostName]# cd /mnt/system/upg_all/RPMS/`**   

   5. Check that the 64-bit kernel RPM (x86_64) is present:   

      **`[Expert@HostName]# ls -l kernel_x86_64-2.6.18-92cp*.rpm`**   

   6. Install the 64-bit kernel RPM (x86_64):   

      **`[Expert@HostName]# rpm -ihv --force kernel_x86_64-2.6.18-92cp*.rpm`**

   <br />

   <br />

5. Verify that the 64-bit kernel RPM (x86_64) was installed:   

   **`[Expert@HostName]# rpm -qa | grep kernel_x86_64`**   

6. Reboot the Virtual Machine.   

7. Set the kernel edition to 64-bit in Clish:   

   * In R75.40-R75.47 versions:  
     **`HostName> set edition default 64-bit`**   

   * In R76 and above:  
     **`HostName> set edition 64-bit`**

   <br />

   <br />

8. Save the configuration:   

   **`HostName> save config`**   

9. Reboot the Virtual Machine.   

10. Check that the machine loaded the 64-bit Linux kernel in one of these ways:   

    * In Gaia Portal:   

      **`System Overview`** pane - **`Edition`**   

    * In Clish:  

      **`HostName> show version os edition`**   

    * In Expert mode:  

      **`[Expert@HostName]# uname -a`**

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