Hyper-V virtualization - Setup and Use in Windows 10  

Something interesting I found @Kari:

■ Hot add memory and network adapter:
You can adjust the amount of memory assigned
to a VM while it is running, even if Dynamic Memory isn’t enabled. This option works for both
generation 1 and generation 2 VMs. On VMs created using the Generation 2 option, you can
also add or remove a network adapter while the virtual machine is running.

Cliff S said:

Something interesting I found @Kari:

Yes, that is a practical feature. You cannot toggle dynamic memory on and off when the vm running but you can increase / decrease the amount of assigned RAM.

Kari said:

Yes, that is a practical feature. You cannot toggle dynamic memory on and off when the vm running but you can increase / decrease the amount of assigned RAM.

Yup, if a VM is running a bit slow(say an update/upgrade) you can now add a bit more if you can spare it.

Oh @Kari, because I have added a lot more to my OneDrive and it's syncd with my VM, I ran out of space for the new build upgrade.
I figured out what to do, all by myself(I'm so proud, even though it was simple logic, and trial & error:))

I had to shut down the Insider Preview VM,
delete all checkpoints,
Edit the hard drive to enlarge it,
***example of Ubuntu VM***








then restart the machine,
go into Disk Management and extend the virtual partition.
Done.
Now you can make a tutorial about it, my friend and teacher

"How to enlarge your virtual hard drive, if you run out of room to update or upgrade"

That was well done!

However, you can of course think this in advance and set the max size of a vhd to something that for sure is enough. The vhd is dynamically expanding, the amount you give the allowed max size, not the actual size. The thing is, although the host system only uses as much as is needed, the vm sees it as a HDD as big as your given max size.

An example: You create a 1 TB vhd when creating a vm, and install Windows 10 on that vhd. After the installation the host sees the vhd as an about 15 to 20 GB file, but the vm sees it as a 1TB HDD.

@Kari, I have this Insider VM on my C: drive an SSD(over 500GB) but that I only use it to test the upgrading and just to see what's new, and not really "use" it, I might migrate it to the spinner that has more space and already a VM library prepared. For the migration I might need your help next time we're on Skype. For now though, I have given it a total of 45GB and that shoulöd be enough.

It was only because, now I have more OneDrive space, I added more files to it, and forgot that it downloads & syncs to the VM too. I could turn it off(in the VM), but in the VM I'm trying what you said you do with OneDrive. And in my post in the themes forum, you see it works darn good.

lx07 said:

Don't overstate that. Reason being that it isn't true.

Sorry, I was not thinking clear enough to explain this simply enough for even you to understand:

A Hyper-V vhd behaves as any dynamically expanding disk on any virtualization platform; of course when the content is deleted from the vhd it does not shrink the same amount; deleting 10 GB might only reduce the host vhd file size with a gig or two. Over a time, any vhd file grows bigger than what is actually needed.

That's why Hyper-V has the Compact feature:

I will try in the future explain these things even more simplified.

Kari