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rated 0 times [  40] [ 0]  / answers: 1 / hits: 37833  / 3 Years ago, wed, july 14, 2021, 1:32:22

Host OS: Windows 7 Guest OS: Ubuntu 11.04



Say if I won't need to work on the guest OS for 1 hour, while having a lot of programs running and don't want to close them. What is the best way to pause my work on the guest OS? Ubuntu has suspend and hibernate. I found that hibernate won't work as it always fails to boot up after hibernate. For suspend, should I couple it with Virtualbox pause to release the host OS resources. Would this cause any issue once resume the work? Since I found sometimes the guest OS becomes slower resume from pause VM.


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 Answers
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For Virtual Box it is not recommended to use the power saving features of the guest OS as this will all be handled by the host. Therefore first thing when having installed my guest OS I disable this (including disabling the screen saver).



The appropriate way to save a virtual machines state (and resume later) is to coose Save the machine state when closing the machine from virtual box manager (here depicted for Windows XP).



enter image description here



This will free all ressources from the virtual machine. Next time we start the machine we will resume exactly at the same state where we saved it (like in suspend/hibernate from a real machine).



From command line this can also be done by



VBoxManage controlvm <name_of_machine>  savestate





Note on security: Mind that resuming from a saved state does not ask for authentication for the guest OS. In case we work with confidential data we therefore need to log out (or switch user) from the guest OS before saving.


[#43286] Wednesday, July 14, 2021, 3 Years  [reply] [flag answer]
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