Floppy directories are provided by default with common.floppydrives

builder/hyperv/iso/builder.go

@@ -325,6 +325,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		&common.StepCreateFloppy{
 			Files:       b.config.FloppyConfig.FloppyFiles,
 			Directories: b.config.FloppyConfig.FloppyDirectories,
+			Directories: b.config.FloppyConfig.FloppyDirectories,
 		},
 		&common.StepHTTPServer{
 			HTTPDir:     b.config.HTTPDir,

builder/hyperv/vmcx/builder.go

@@ -50,16 +50,7 @@ type Config struct {
 	// The size, in megabytes, of the computer memory in the VM.
 	// By default, this is 1024 (about 1 GB).
 	RamSize uint `mapstructure:"ram_size"`
-	// A list of files to place onto a floppy disk that is attached when the
-	// VM is booted. This is most useful for unattended Windows installs,
-	// which look for an Autounattend.xml file on removable media. By default,
-	// no floppy will be attached. All files listed in this setting get
-	// placed into the root directory of the floppy and the floppy is attached
-	// as the first floppy device. Currently, no support exists for creating
-	// sub-directories on the floppy. Wildcard characters (*, ?, and [])
-	// are allowed. Directory names are also allowed, which will add all
-	// the files found in the directory to the floppy.
-	FloppyFiles []string `mapstructure:"floppy_files"`
+
 	//
 	SecondaryDvdImages []string `mapstructure:"secondary_iso_images"`
 
@@ -214,7 +205,7 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 	}
 
 	if b.config.Generation == 2 {
-		if len(b.config.FloppyFiles) > 0 {
+		if len(b.config.FloppyFiles) > 0 || len(b.config.FloppyDirectories) > 0 {
 			err = errors.New("Generation 2 vms don't support floppy drives. Use ISO image instead.")
 			errs = packer.MultiErrorAppend(errs, err)
 		}
@@ -385,6 +376,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	steps = append(steps,
 		&common.StepCreateFloppy{
 			Files: b.config.FloppyFiles,
+			Directories: b.config.FloppyConfig.FloppyDirectories,
 		},
 		&common.StepHTTPServer{
 			HTTPDir:     b.config.HTTPDir,

website/source/docs/builders/hyperv-vmcx.html.md

@@ -113,6 +113,14 @@ can be configured for this builder.
     characters (*, ?, and []) are allowed. Directory names are also allowed,
     which will add all the files found in the directory to the floppy.
 
+- `floppy_dirs` (array of strings) - A list of directories to place onto
+    the floppy disk recursively. This is similar to the `floppy_files` option
+    except that the directory structure is preserved. This is useful for when
+    your floppy disk includes drivers or if you just want to organize it's
+    contents as a hierarchy. Wildcard characters (\*, ?, and \[\]) are allowed.
+    The maximum summary size of all files in the listed directories are the
+    same as in `floppy_files`.
+
 - `guest_additions_mode` (string) - How should guest additions be installed.
     If value `attach` then attach iso image with by specified by `guest_additions_path`.
     Otherwise guest additions is not installed.
@@ -196,7 +204,7 @@ can be configured for this builder.
     this to an empty string, Packer will try to determine the switch to use by looking for
     external switch that is up and running.
 
--   `switch_vlan_id` (string) - This is the vlan of the virtual switch's network card. 
+- switch_vlan_id` (string) - This is the vlan of the virtual switch's network card. 
     By default none is set. If none is set then a vlan is not set on the switch's network card.
     If this value is set it should match the vlan specified in by `vlan_id`.