packer-cn/website/pages/partials/builder/amazon/common/BlockDevice.mdx

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<!-- Code generated from the comments of the BlockDevice struct in builder/amazon/common/block_device.go; DO NOT EDIT MANUALLY -->
These will be attached when booting a new instance from your AMI. Your
options here may vary depending on the type of VM you use.
Example use case:
The following mapping will tell Packer to encrypt the root volume of the
build instance at launch using a specific non-default kms key:
JSON example:
```json
ami_block_device_mappings: [
{
"device_name": "/dev/sda1",
"encrypted": true,
"kms_key_id": "1a2b3c4d-5e6f-1a2b-3c4d-5e6f1a2b3c4d"
}
]
```
HCL2 example:
```hcl
ami_block_device_mappings {
device_name = "/dev/sda1"
encrypted = true
kms_key_id = "1a2b3c4d-5e6f-1a2b-3c4d-5e6f1a2b3c4d"
}
```
Documentation for Block Devices Mappings can be found here:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html