I'm not even sure why azure even has a GUI Website. It is starting to feel a bit ridiculous when the old manage.windowsazure.com I could powershell up a VHD, and then very easily use a Storage and container and Add the image and then choose from gallery of my own images.
NOW I read that in May 2017 a lot of things with the old portal are going away. I created a Storage Account myvmblobs
and then a container mywincontainer
and then I uploaded a VHD , tmppro2.vhd is sitting there as a VHD Blob
URL https://myvmblobs.blob.core.windows.net/mywincontainer/TMPPRO2.VHD
So I read that I could create a Disk image from powershell ( I have to no way to do it with website portal.azure.com )
Add-AzureDisk 'tmppro2' -MediaLocation https://myvmblobs.blob.core.windows.net/mywincontainer/TMPPRO2.VHD -Label 'OS' -OS "Windows"
However, I don't know if the Label or OS is important...
Add-AzureDisk : BadRequest: The storage account with the name myvmblobs as specified in the VHD URI https://myvmblobs.blob.core.windows.net/mywincontainer/TMPPRO2.VHD does not exists in the current subscription