Try assigning rights to the Group "Everyone" with full read/write etc.or create a directory called data and assign rights and mapping to that.

By default windows security doesn't like giving users rights to the "root" of the drive.

>In Windows 8.1, I have created a D drive under VHD. Without doing anything, by default, from my main PC, trying to map a drive with the same account and password such as \\Computer\D$ would work. But, not on this one. I had to activate the share of that drive and I cannot assign it to D$ as it says it is already taken. I do not know where the D$ comes from. This is a brand new drive. So, when connecting with \\Computer\d, this gives me access but in read only. Of course, I can go ahead and apply permissions for full rights. But, I would like to avoid that. Usually, if I can use the d$ syntax, that will be better as I wouldn't have to apply the permissions at the drive level. How can I adjust this drive to be seen a D$ so the account of my main PC can have also full administrator access to that map drive once connected?