Did you un mount the ISO before stopping/starting your instance? Sounds like it's just trying to reinstall because your instance is booting from the ISO install media.
> On 23 Nov 2013, at 12:28, Du Jun <dj199...@gmail.com> wrote: > > Hi all, > I booted a VM via ISO and then stoped it.When I start it again and I > found myself in front of VM OS reinstalling.That means,when I stop a > VM booting via ISO,I will lose anything in the disk.It's too awful! Is > my understanding correct?If so,is the root-disk of VM ephemeral? > > ----- > Thank you!