How you will change the root EBS device of my amazon EC2 instance?
Stop the instance. Detach the root EBS volume. Attach the alternate EBS volume (as the root e.g. /dev/sda1) Start the instance. This p...

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- Stop the instance.
- Detach the root EBS volume.
- Attach the alternate EBS volume (as the root e.g. /dev/sda1)
- Start the instance.
- This presupposes that your alternate EBS volume is bootable, of course - it has to contain the bootable OS image.