[ Hyper-V ] create snapshot, rollback to previous snapshot, export snapshot

Create snapshot

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No need to shut down the virtual machine, but the virtual machine will be freezed while creating a snapshot.

Rollback to previous snapshot

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Export snapshot

same as rollback to previous snapshot,

right-click > export

NOTE : In Hyper-V 2008 R2, we need to shutdown the virtual machine before export.

However in 2012 R2, no need to shutdown the virtual machine.

Import snapshot

New > Virtual Machine

and we have the choice to choose the existing HDD

do not forget to set the RAM

Delete checkpoint

right click at snapshot > Delete checkpoint

or

right click at snapshot > Delete checkpoint subtree

and wait for hyper-v to merge snapshot.