An Amazon EBS (Elastic Block Store) volume is a durable, block-level storage device that we can attach to our instances. After attaching a volume to an instance, we can use it as a physical hard drive.

Increase the size of EBS volume

Stop the Instance

1. Navigate to the EC2 Instance and Select it
   
2. Click on Stop Instance from Instance State menu

Detach the Volume

1. Navigate to the Volumes in Elastic Block Store
   
2. Select the desired Volume
   
3. Click on Detach Volume from Actions

Modify the Volume

1. Select the desired volume
   
2. Click on Modify
   
3. Type the required Size
   
4. Click on Modify

Attach the Volume

1. Select the Size modified Volume
   
2. Click on Actions
   
3. Click on Attach Volume
   
4. Select the Instance
   
5. Add the device name ("/dev/sda1" is for root volume and "/dev/sd[f-p]" is for data volume) 
   
6. Click on Attach Volume

Start the Instance