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you should just be able to modify the code. When you run `pulumi up` it'll show you the changes

yes, that works, if i want to change `instance_type`  but how do i change IOPS on a ebs_block_devices

Did you try this parameter? <https://www.pulumi.com/docs/reference/pkg/aws/ec2/instance/#instanceebsblockdevice>

Thanks that helped me some. I noticed that when changing `ebs_block_devices` pulumi wants to destroy that disk and create a new one :slightly_smiling_face: but i dont want to do that.

If Pulumi wants to destroy when you modify the instance that’s likely because the upstream api doesn’t support attaching the volume without recreating 