这是对已发布镜像的保护么？难道对其进行修改的路彻底断掉了？
以volume形式attach也不行，dd成raw再读取也读不了，敢问路在何方呢
If a volume has an AWS Marketplace product code:
The volume can only be attached to the root device of a stopped instance.
You must be subscribed to the AWS Marketplace code that is on the volume.
The configuration (instance type, operating system) of the instance must support that specific AWS Marketplace code. For example, you cannot take a volume from a Windows instance and attach it to a Linux instance.
AWS Marketplace product codes are copied from the volume to the instance.