[tryp4vps]

As i know. virtual machine is almost same as we get a pc. and if we have more then 250GB drive. and i make a two partition on it. and install dual OS. as in my PC. i have dual windows + linux. so why i could not get this in my vps? if provider configure second OS on second IP and accessible both with both IPs. so how technically it is not possible?

You can have dual boot Windows + Linux in one PC. That's right.

But you cannot boot Windows in one partition and also physically boot Linux in another partition at the same time.

However, you may, for example, boot Windows in one partition, and then run a virtual Linux box inside Windows.