diff --git a/src/Cli/IsoTool.php b/src/Cli/IsoTool.php
index 842ed4e..a7580ea 100644
--- a/src/Cli/IsoTool.php
+++ b/src/Cli/IsoTool.php
@@ -122,9 +122,9 @@ protected function extractAction(string $file, string $extractPath): void
         echo 'Extract finished!' . PHP_EOL;
     }
 
-    protected function extractFiles(Volume $primaryVolume, IsoFile $isoFile, string $destinationDir): void
+    protected function extractFiles(Volume $volumeDescriptor, IsoFile $isoFile, string $destinationDir): void
     {
-        $pathTable = $primaryVolume->loadTable($isoFile);
+        $pathTable = $volumeDescriptor->loadTable($isoFile);
 
         if ($pathTable === null) {
             return;
@@ -135,7 +135,7 @@ protected function extractFiles(Volume $primaryVolume, IsoFile $isoFile, string
         /** @var PathTableRecord $pathRecord */
         foreach ($pathTable as $pathRecord) {
             // check extents
-            $extents = $pathRecord->loadExtents($isoFile, $primaryVolume->blockSize);
+            $extents = $pathRecord->loadExtents($isoFile, $volumeDescriptor->blockSize, ($volumeDescriptor->getType() === Type::SUPPLEMENTARY_VOLUME_DESC), $volumeDescriptor->jolietLevel);
 
             if ($extents !== false) {
                 /** @var FileDirectory $extentRecord */
@@ -153,7 +153,7 @@ protected function extractFiles(Volume $primaryVolume, IsoFile $isoFile, string
                             $dataLength = $extentRecord->dataLength;
                             echo $fullPath . ' (location: ' . $location . ') (length: ' . $dataLength . ')'  . PHP_EOL;
 
-                            $pathRecord->extractFile($isoFile, $primaryVolume->blockSize, $location, $dataLength, $fullPath);
+                            $pathRecord->extractFile($isoFile, $volumeDescriptor->blockSize, $location, $dataLength, $fullPath);
                         } else {
                             if (! is_dir($fullPath)) {
                                 if (mkdir($fullPath) === false) {
@@ -172,6 +172,7 @@ protected function infoVolume(Volume $volumeDescriptor): void
         echo '   - System ID: ' . $volumeDescriptor->systemId . PHP_EOL;
         echo '   - Volume ID: ' . $volumeDescriptor->volumeId . PHP_EOL;
         echo '   - App ID: ' . $volumeDescriptor->appId . PHP_EOL;
+        echo '   - File Structure Version: ' . $volumeDescriptor->fileStructureVersion . PHP_EOL;
         echo '   - Volume Space Size: ' . $volumeDescriptor->volumeSpaceSize . PHP_EOL;
         echo '   - Volume Set Size: ' . $volumeDescriptor->volumeSetSize . PHP_EOL;
         echo '   - Volume SeqNum: ' . $volumeDescriptor->volumeSeqNum . PHP_EOL;
@@ -186,6 +187,10 @@ protected function infoVolume(Volume $volumeDescriptor): void
         echo '   - Modification Date: ' . $volumeDescriptor->modificationDate?->toDateTimeString() . PHP_EOL;
         echo '   - Expiration Date: ' . $volumeDescriptor->expirationDate?->toDateTimeString() . PHP_EOL;
         echo '   - Effective Date: ' . $volumeDescriptor->effectiveDate?->toDateTimeString() . PHP_EOL;
+
+        if ($volumeDescriptor instanceof SupplementaryVolume && $volumeDescriptor->jolietLevel !== 0) {
+            echo '   - Joliet Level: ' . $volumeDescriptor->jolietLevel . PHP_EOL;
+        }
     }
 
     protected function displayFiles(Volume $volumeDescriptor, IsoFile $isoFile): void
@@ -201,7 +206,7 @@ protected function displayFiles(Volume $volumeDescriptor, IsoFile $isoFile): voi
         /** @var PathTableRecord $pathRecord */
         foreach ($pathTable as $pathRecord) {
             // check extents
-            $extents = $pathRecord->loadExtents($isoFile, $volumeDescriptor->blockSize);
+            $extents = $pathRecord->loadExtents($isoFile, $volumeDescriptor->blockSize, ($volumeDescriptor->getType() === Type::SUPPLEMENTARY_VOLUME_DESC), $volumeDescriptor->jolietLevel);
 
             if ($extents !== false) {
                 /** @var FileDirectory $extentRecord */
diff --git a/src/Descriptor/Volume.php b/src/Descriptor/Volume.php
index f523e1e..2a486c6 100644
--- a/src/Descriptor/Volume.php
+++ b/src/Descriptor/Volume.php
@@ -38,6 +38,7 @@ abstract class Volume extends Descriptor
     public ?Carbon $expirationDate = null;
     public ?Carbon $effectiveDate = null;
     public int $fileStructureVersion;
+    public int $jolietLevel = 0;
 
     public function init(IsoFile $isoFile, int &$offset): void
     {
@@ -58,8 +59,26 @@ public function init(IsoFile $isoFile, int &$offset): void
 
         $this->volumeSpaceSize = Buffer::readBBO($this->bytes, 8, $offset);
 
-        // unused
-        $unused = Buffer::getBytes($this->bytes, 32, $offset);
+        // joliet escape sequence
+        $jolietEscapeSequence = Buffer::getBytes($this->bytes, 32, $offset);
+
+        // Joliet Detection - If this is a Supplementary Volume Descriptor
+        if ($this->type === Type::SUPPLEMENTARY_VOLUME_DESC) {
+            // Define Joliet escape sequences as their byte values
+            $jolietLevels = [
+                1 => '374764', // %/@ in byte format
+                2 => '374767', // %/C in byte format
+                3 => '374769', // %/E in byte format
+            ];
+
+            // Check for Joliet escape sequences indicating Unicode support
+            foreach ($jolietLevels as $level => $sequence) {
+                if (str_contains($jolietEscapeSequence, $sequence)) {
+                    $this->jolietLevel = $level; // Record the Joliet level if found
+                    break;
+                }
+            }
+        }
 
         $this->volumeSetSize = Buffer::readBBO($this->bytes, 4, $offset);
         $this->volumeSeqNum = Buffer::readBBO($this->bytes, 4, $offset);
@@ -72,6 +91,7 @@ public function init(IsoFile $isoFile, int &$offset): void
         $this->optMPathTablePos = Buffer::readMSB($this->bytes, 4, $offset);
 
         $this->rootDirectory = new FileDirectory();
+        $this->rootDirectory->jolietLevel = $this->jolietLevel;
         $this->rootDirectory->init($this->bytes, $offset, ($this->type === Type::SUPPLEMENTARY_VOLUME_DESC));
 
         $this->volumeSetId = trim(Buffer::readDString($this->bytes, 128, $offset, ($this->type === Type::SUPPLEMENTARY_VOLUME_DESC)));
diff --git a/src/FileDirectory.php b/src/FileDirectory.php
index 788a621..ec5e927 100644
--- a/src/FileDirectory.php
+++ b/src/FileDirectory.php
@@ -107,6 +107,8 @@ class FileDirectory
      */
     public string $fileId;
 
+    public int $jolietLevel = 0;
+
     /**
      * Load the "Directory Record" from buffer
      *
@@ -149,11 +151,20 @@ public function init(array &$buffer, int &$offset, bool $supplementary = false):
             $this->fileId = '..';
             $tmp++;
         } else {
-            $this->fileId = Buffer::readDString($buffer, $this->fileIdLength, $tmp, $supplementary);
-
-            $pos = strpos($this->fileId, ';1');
-            if ($pos !== false && $pos === strlen($this->fileId) - 2) {
-                $this->fileId = substr($this->fileId, 0, strlen($this->fileId) - 2);
+            if ($this->jolietLevel === 3) {
+                $this->fileId = Buffer::readAString($buffer, $this->fileIdLength, $tmp, $supplementary);
+
+                $pos = strpos($this->fileId, ';1');
+                if ($pos !== false && $pos === strlen($this->fileId) - 2) {
+                    $this->fileId = substr($this->fileId, 0, strlen($this->fileId) - 2);
+                }
+            } else {
+                $this->fileId = Buffer::readDString($buffer, $this->fileIdLength, $tmp, $supplementary);
+
+                $pos = strpos($this->fileId, ';1');
+                if ($pos !== false && $pos === strlen($this->fileId) - 2) {
+                    $this->fileId = substr($this->fileId, 0, strlen($this->fileId) - 2);
+                }
             }
         }
 
@@ -238,9 +249,9 @@ public function isParent(): bool
      *
      * @return array<int, FileDirectory>|false
      */
-    public function loadExtents(IsoFile $isoFile, int $blockSize, bool $supplementary = false): array|false
+    public function loadExtents(IsoFile $isoFile, int $blockSize, bool $supplementary = false, int $jolietLevel = 0): array|false
     {
-        return self::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary);
+        return self::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary, $jolietLevel);
     }
 
     /**
@@ -248,7 +259,7 @@ public function loadExtents(IsoFile $isoFile, int $blockSize, bool $supplementar
      *
      * @return array<int, FileDirectory>|false
      */
-    public static function loadExtentsSt(IsoFile $isoFile, int $blockSize, int $location, bool $supplementary = false): array|false
+    public static function loadExtentsSt(IsoFile $isoFile, int $blockSize, int $location, bool $supplementary = false, int $jolietLevel = 0): array|false
     {
         if ($isoFile->seek($location * $blockSize, SEEK_SET) === -1) {
             return false;
@@ -268,11 +279,13 @@ public static function loadExtentsSt(IsoFile $isoFile, int $blockSize, int $loca
 
         $offset = 1;
         $fdDesc = new self();
+        $fdDesc->jolietLevel = $jolietLevel;
         $extents = [];
 
         while ($fdDesc->init($bytes, $offset, $supplementary) !== false) {
             $extents[] = $fdDesc;
             $fdDesc = new self();
+            $fdDesc->jolietLevel = $jolietLevel;
         }
 
         return $extents;
diff --git a/src/PathTableRecord.php b/src/PathTableRecord.php
index 0c20618..b56b6d3 100644
--- a/src/PathTableRecord.php
+++ b/src/PathTableRecord.php
@@ -81,9 +81,9 @@ public function init(array &$bytes, int &$offset, bool $supplementary = false):
      *
      * @return array<int, FileDirectory>|false
      */
-    public function loadExtents(IsoFile &$isoFile, int $blockSize, bool $supplementary = false): array|false
+    public function loadExtents(IsoFile &$isoFile, int $blockSize, bool $supplementary = false, int $jolietLevel = 0): array|false
     {
-        return FileDirectory::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary);
+        return FileDirectory::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary, $jolietLevel);
     }
 
     public function extractFile(IsoFile &$isoFile, int $blockSize, int $location, int $dataLength, string $destinationFile): void
diff --git a/src/Util/Buffer.php b/src/Util/Buffer.php
index 7ebc423..3bf57d2 100644
--- a/src/Util/Buffer.php
+++ b/src/Util/Buffer.php
@@ -33,7 +33,9 @@ public static function getString(array &$buffer, int $length, int &$offset = 0,
             if (! isset($buffer[$i])) {
                 throw new Exception('Failed to read buffer entry ' . $i);
             }
-            $string .= chr($buffer[$i]);
+            if ($supplementary || $buffer[$i] !== 0) {
+                $string .= chr($buffer[$i]);
+            }
         }
 
         if ($supplementary) {
diff --git a/tests/IsoFileTest.php b/tests/IsoFileTest.php
index ff87eee..4b0dd48 100644
--- a/tests/IsoFileTest.php
+++ b/tests/IsoFileTest.php
@@ -311,6 +311,7 @@ public function testDescriptorsDosIso(): void
         $this->assertSame('DOS4.01', $supplementaryVolumeDescriptor->volumeId);
         $this->assertSame(848, $supplementaryVolumeDescriptor->volumeSpaceSize);
         $this->assertSame('', $supplementaryVolumeDescriptor->appId);
+        $this->assertSame(3, $supplementaryVolumeDescriptor->jolietLevel);
         $this->assertNull($supplementaryVolumeDescriptor->creationDate);
         $this->assertNull($supplementaryVolumeDescriptor->modificationDate);
         $this->assertNull($supplementaryVolumeDescriptor->expirationDate);