How to start a vm after vm has been generalised

Question

How to start a vm after vm has been generalised

Patwa, Rahul 0

We were creating a snapshot of an azure vm , while creating it we have generalised the vm. Now vm is in deallocated state, we have lots of configuration on that vm. /

Need help to start that vm asap

kobulloc-MSFT 26,811 Reputation points Microsoft Employee Moderator

2023-10-02T15:36:57.3233333+00:00

Hello, @Patwa, Rahul !

As @JimmySalian-2011 said, the process of generalization is not reversable and you would need to create a snapshot of the VM if you wanted to save data. Let us know if we can provide any additional assistance.

https://learn.microsoft.com/en-us/azure/virtual-machines/generalize#windows

After you have run Sysprep on a VM, that VM is considered generalized and cannot be restarted. The process of generalizing a VM is not reversible. If you need to keep the original VM functioning, you should create a snapshot of the OS disk, create a VM from the snapshot, and then generalize that copy of the VM.

If an answer has been helpful, please consider accepting the answer to help increase visibility of this question for other members of the Microsoft Q&A community. If not, please let us know what is still needed in the comments so the question can be answered. Thank you for helping to improve Microsoft Q&A!

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kobulloc-MSFT 26,811 Reputation points Microsoft Employee Moderator

2023-10-02T15:36:57.3233333+00:00

Hello, @Patwa, Rahul !

As @JimmySalian-2011 said, the process of generalization is not reversable and you would need to create a snapshot of the VM if you wanted to save data. Let us know if we can provide any additional assistance.

https://learn.microsoft.com/en-us/azure/virtual-machines/generalize#windows

After you have run Sysprep on a VM, that VM is considered generalized and cannot be restarted. The process of generalizing a VM is not reversible. If you need to keep the original VM functioning, you should create a snapshot of the OS disk, create a VM from the snapshot, and then generalize that copy of the VM.

If an answer has been helpful, please consider accepting the answer to help increase visibility of this question for other members of the Microsoft Q&A community. If not, please let us know what is still needed in the comments so the question can be answered. Thank you for helping to improve Microsoft Q&A!

Answer 1

JimmySalian-2011 42,511

HI Rahul,

Generalizing removes machine specific information so the image can be used to create multiple VMs. Once the VM has been generalized or deprovisioned, you need to let the platform know so that the boot sequence can be set correctly. So to add this is a irreversible process. Once you generalize the Virtual machine, the VM becomes inaccessible and the operation cannot be reversed back.

Please contact Microsoft asap to assist in this process either way you can restore from snapshot or have any backups?

https://azure.microsoft.com/en-ca/support/create-ticket/

Hope this helps.

JS

==

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Jonathan Wisidagama 0 Reputation points

2024-04-05T19:10:50.74+00:00

So we cant just take a snapshot without bricking the VM ?

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How to start a vm after vm has been generalised

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