I get the following error on my site at discountasp.net.  I think it is because the data directory needs to be able to have write access.  Using the control panel my only option for 'write' access to the directory is 'deny'.   Only the root folder seems to allow me to set write permissions.   If I am not on the correct track what does this error mean?

Probing system...

An Error Occurred:There is not enough space on the disk.
Source:mscorlib
Stack Trace at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options) at System.IO.StreamWriter.CreateFile(String path, Boolean append) at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize) at System.IO.StreamWriter..ctor(String path, Boolean append) at System.IO.File.CreateText(String path) at mojoPortal.Web.mojoSetup.TouchTestFile(String pathToFile) at mojoPortal.Web.mojoSetup.TouchTestFile() at mojoPortal.Web.mojoSetup.DataFolderIsWritable() at mojoPortal.Web.UI.Pages.SetupHome.ProbeSystem() at mojoPortal.Web.UI.Pages.SetupHome.Page_Load(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)