Set EC2Config service properties from the system dialog on your EC2 Windows instance
The following procedure describes how to use the EC2 Service Properties system dialog to enable or disable settings.
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Launch and connect to your Windows instance.
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From the Start menu, click All Programs, and then click EC2ConfigService Settings.
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On the General tab of the EC2 Service Properties system dialog, you can enable or disable the following settings.
- Set Computer Name
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If this setting is enabled (it is disabled by default), the host name is compared to the current internal IP address at each boot; if the host name and internal IP address do not match, the host name is reset to contain the internal IP address and then the system reboots to pick up the new host name. To set your own host name, or to prevent your existing host name from being modified, do not enable this setting.
- User Data
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User data execution enables you to specify scripts in the instance metadata. By default, these scripts are run during the initial launch. You can also configure them to run the next time you reboot or start the instance, or every time you reboot or start the instance.
If you have a large script, we recommend that you use user data to download the script, and then run it.
For more information, see User data execution.
- Event Log
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Use this setting to display event log entries on the console during boot for easy monitoring and debugging.
Click Settings to specify filters for the log entries sent to the console. The default filter sends the three most recent error entries from the system event log to the console.
- Wallpaper Information
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Use this setting to display system information on the desktop background. The following is an example of the information displayed on the desktop background.
The information displayed on the desktop background is controlled by the settings file
EC2ConfigService\Settings\WallpaperSettings.xml. - Enable Hibernation
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Use this setting to allow EC2 to signal the operating system to perform hibernation.
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Click the Storage tab. You can enable or disable the following settings.
- Root Volume
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This setting dynamically extends Disk 0/Volume 0 to include any unpartitioned space. This can be useful when the instance is booted from a root device volume that has a custom size.
- Initialize Drives
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This setting formats and mounts all volumes attached to the instance during start.
- Drive Letter Mapping
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The system maps the volumes attached to an instance to drive letters. For Amazon EBS volumes, the default is to assign drive letters going from D: to Z:. For instance store volumes, the default depends on the driver. AWS PV drivers and Citrix PV drivers assign instance store volumes drive letters going from Z: to A:. Red Hat drivers assign instance store volumes drive letters going from D: to Z:.
To choose the drive letters for your volumes, click Mappings. In the DriveLetterSetting dialog box, specify the Volume Name and Drive Letter values for each volume, click Apply, and then click OK. We recommend that you select drive letters that avoid conflicts with drive letters that are likely to be in use, such as drive letters in the middle of the alphabet.
After you specify a drive letter mapping and attach a volume with same label as one of the volume names that you specified, EC2Config automatically assigns your specified drive letter to that volume. However, the drive letter mapping fails if the drive letter is already in use. Note that EC2Config doesn't change the drive letters of volumes that were already mounted when you specified the drive letter mapping.
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To save your settings and continue working on them later, click OK to close the EC2 Service Properties system dialog. If you have finished customizing your instance and want to create an AMI from that instance, see Create an Amazon EC2 AMI using Windows Sysprep.
