EC2- Booting from an EBS snapshot and then detaching the volume to reduce costs

I would like to boot开发者_StackOverflow中文版 from an EBS snapshot for convenience but then I would like to detach the volume after launch so I don't have to pay for it.

Is this possible?

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No, it's not possible. The EBS volume is the system partition so it the same as pulling the harddrive out of the server.

To reduce costs you could try to minimize the size of the volume so it has just enough space to hold all the system files and your data.