If we get the error like below by EC2 server
Waiting 10 seconds for device /dev/xvda1 ... Root device '/dev/xvda1' doesn't exist. Attempting to create it.
ERROR: Unable to determine major/minor number of root device '/dev/xvda1'.
You are being dropped to a recovery shell Type 'exit' to try and continue booting sh: can't access tty; job control turned off [ramfs /]#
Root caused :-
• Missing or incorrectly configured virtual block device driver
• Device enumeration clash (sda versus xvda)
• Incorrect choice of instance kernel
Solution:-
A. If server is Amazon EBS-backed:-
Use the following procedure:
1. Stop the instance.
2. Detach the volume.
3. Fix the device mapping problem.
4. Start the instance.
5. Modify the AMI to address device mapping issues.
B. If server is Instance store-backed:-
Use the following procedure:
1. Create an AMI with the appropriate fix (map block device correctly).
2. Terminate the instance and launch a new instance using the AMI you created.
Waiting 10 seconds for device /dev/xvda1 ... Root device '/dev/xvda1' doesn't exist. Attempting to create it.
ERROR: Unable to determine major/minor number of root device '/dev/xvda1'.
You are being dropped to a recovery shell Type 'exit' to try and continue booting sh: can't access tty; job control turned off [ramfs /]#
Root caused :-
• Missing or incorrectly configured virtual block device driver
• Device enumeration clash (sda versus xvda)
• Incorrect choice of instance kernel
Solution:-
A. If server is Amazon EBS-backed:-
Use the following procedure:
1. Stop the instance.
2. Detach the volume.
3. Fix the device mapping problem.
4. Start the instance.
5. Modify the AMI to address device mapping issues.
B. If server is Instance store-backed:-
Use the following procedure:
1. Create an AMI with the appropriate fix (map block device correctly).
2. Terminate the instance and launch a new instance using the AMI you created.
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