diff --git a/main.go b/main.go
index c6e58fb..18ef9ac 100644
--- a/main.go
+++ b/main.go
@@ -107,8 +107,9 @@ func main() {
 			os.Exit(1)
 		}
 		defer file.Close()
+		fileInfo, err := os.Stat(fileName)
 
-		err = prodos.WriteFileFromFile(file, pathName, fileType, auxType, inFileName)
+		err = prodos.WriteFileFromFile(file, pathName, fileType, auxType, fileInfo.ModTime(), inFileName)
 		if err != nil {
 			fmt.Printf("Failed to write file %s", err)
 		}
@@ -149,7 +150,7 @@ func main() {
 		defer file.Close()
 		prodos.CreateVolume(file, volumeName, volumeSize)
 	case "putall":
-		file, err := os.Create(fileName)
+		file, err := os.OpenFile(fileName, os.O_RDWR, 0755)
 		if err != nil {
 			fmt.Printf("failed to create file: %s\n", err)
 			return
diff --git a/prodos/block.go b/prodos/block.go
index dd94d54..92cffa4 100644
--- a/prodos/block.go
+++ b/prodos/block.go
@@ -8,6 +8,8 @@
 package prodos
 
 import (
+	"errors"
+	"fmt"
 	"io"
 )
 
@@ -16,6 +18,10 @@ func ReadBlock(reader io.ReaderAt, block int) ([]byte, error) {
 	buffer := make([]byte, 512)
 
 	_, err := reader.ReadAt(buffer, int64(block)*512)
+	if err != nil {
+		errString := fmt.Sprintf("failed to read block %04X: %s", block, err.Error())
+		err = errors.New(errString)
+	}
 
 	return buffer, err
 }
@@ -23,5 +29,10 @@ func ReadBlock(reader io.ReaderAt, block int) ([]byte, error) {
 // WriteBlock writes a block to a ProDOS volume from a byte array
 func WriteBlock(writer io.WriterAt, block int, buffer []byte) error {
 	_, err := writer.WriteAt(buffer, int64(block)*512)
+	if err != nil {
+		errString := fmt.Sprintf("failed to write block %04X: %s", block, err.Error())
+		err = errors.New(errString)
+	}
+
 	return err
 }
diff --git a/prodos/file.go b/prodos/file.go
index e15eff9..89cae3e 100644
--- a/prodos/file.go
+++ b/prodos/file.go
@@ -43,7 +43,7 @@ func LoadFile(reader io.ReaderAt, path string) ([]byte, error) {
 }
 
 // WriteFile writes a file to a ProDOS volume from a byte array
-func WriteFile(readerWriter ReaderWriterAt, path string, fileType int, auxType int, buffer []byte) error {
+func WriteFile(readerWriter ReaderWriterAt, path string, fileType int, auxType int, createdTime time.Time, modifiedTime time.Time, buffer []byte) error {
 	directory, fileName := GetDirectoryAndFileNameFromPath(path)
 
 	existingFileEntry, _ := GetFileEntry(readerWriter, path)
@@ -85,8 +85,8 @@ func WriteFile(readerWriter ReaderWriterAt, path string, fileType int, auxType i
 	}
 	fileEntry.FileName = fileName
 	fileEntry.BlocksUsed = len(blockList)
-	fileEntry.CreationTime = time.Now()
-	fileEntry.ModifiedTime = time.Now()
+	fileEntry.CreationTime = createdTime
+	fileEntry.ModifiedTime = modifiedTime
 	fileEntry.AuxType = auxType
 	fileEntry.EndOfFile = len(buffer)
 	fileEntry.FileType = fileType
diff --git a/prodos/host.go b/prodos/host.go
index dac130a..9024774 100644
--- a/prodos/host.go
+++ b/prodos/host.go
@@ -8,9 +8,11 @@ package prodos
 
 import (
 	"encoding/binary"
+	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 )
 
 // AddFilesFromHostDirectory fills the root volume with files
@@ -30,8 +32,8 @@ func AddFilesFromHostDirectory(
 			return err
 		}
 
-		if !file.IsDir() && info.Size() > 0 && info.Size() <= 0x1000000 {
-			err = WriteFileFromFile(readerWriter, "", 0, 0, filepath.Join(directory, file.Name()))
+		if file.Name()[0] != '.' && !file.IsDir() && info.Size() > 0 && info.Size() <= 0x1000000 {
+			err = WriteFileFromFile(readerWriter, "", 0, 0, info.ModTime(), filepath.Join(directory, file.Name()))
 			if err != nil {
 				return err
 			}
@@ -42,15 +44,18 @@ func AddFilesFromHostDirectory(
 }
 
 // WriteFileFromFile writes a file to a ProDOS volume from a host file
-func WriteFileFromFile(readerWriter ReaderWriterAt, pathName string, fileType int, auxType int, inFileName string) error {
+func WriteFileFromFile(readerWriter ReaderWriterAt, pathName string, fileType int, auxType int, modifiedTime time.Time, inFileName string) error {
+	fmt.Printf("WriteFileFromFile: %s\n", inFileName)
 	inFile, err := os.ReadFile(inFileName)
 	if err != nil {
+		fmt.Println("failed to read file")
 		return err
 	}
 
 	if auxType == 0 && fileType == 0 {
 		auxType, fileType, inFile, err = convertFileByType(inFileName, inFile)
 		if err != nil {
+			fmt.Println("failed to convert file")
 			return err
 		}
 	}
@@ -67,7 +72,7 @@ func WriteFileFromFile(readerWriter ReaderWriterAt, pathName string, fileType in
 		}
 	}
 
-	return WriteFile(readerWriter, pathName, fileType, auxType, inFile)
+	return WriteFile(readerWriter, pathName, fileType, auxType, time.Now(), modifiedTime, inFile)
 }
 
 func convertFileByType(inFileName string, inFile []byte) (int, int, []byte, error) {