eliminated disk checking errors

disk_check.ps1

@@ -22,20 +22,49 @@ Function Write-Log{
 	Add-Content $logFile -value $logstring
 }
 
+# function to scan the disk whether we have to use a drive letter
+# (i.e. C:, D:, etc) or a filesystem label (i.e. Windows, etc.)
+Function Scan-Disk{
+	Param ([string]$volume_identifier)
+
+	$result=Repair-Volume -DriveLetter $i.DriveLetter -Scan
+
+	if ($result.value -gt 0) {
+		Repair-Volume -DriveLetter $i.DriveLetter -Scan -OfflineScanAndFix
+		$requireReboot = $true
+	} else {
+		Write-Output "$($i.FileSystemLabel): Drive is OK!"
+		Write-Log "Date: $($now), Drive Letter: $($i.DriveLetter), Volume Name: $($i.FileSystemLabel), Result: $($result), $($computerName)"
+	}
+}
+
 Write-Output "Checking disks for $($computerName)"
 
 foreach ($i in $volumes) {
-	if ($i.FileSystemLabel -eq "") {
+	if ($i.FileSystemLabel -eq $null) {
-		Write-Output ""
-	} else {
 		$result=Repair-Volume -DriveLetter $i.DriveLetter -Scan
 
 		if ($result.value -gt 0) {
 			Repair-Volume -DriveLetter $i.DriveLetter -Scan -OfflineScanAndFix
 			$requireReboot = $true
+		} else {
+			Write-Output "$($i.DriveLetter): Drive is OK!"
+			Write-Log "Date: $($now), Drive Letter: $($i.DriveLetter), Result: $($result), $($computerName)"
+		}
+	} else {
+		if ($i.DriveLetter -eq $null) {
+			Write-Output "Volume is not identifiable! Skipping..."
+			continue
+		}
+
+		$result=Repair-Volume -FileSystemLabel $i.FileSystemLabel -Scan
+
+		if ($result.value -gt 0) {
+			Repair-Volume -FileSystemLabel $i.FileSystemLabel -Scan -OfflineScanAndFix
+			$requireReboot = $true
 		} else {
 			Write-Output "$($i.FileSystemLabel): Drive is OK!"
-			Write-Log "Date: $($now), Drive Letter: $($i.DriveLetter), Volume Name: $($i.FileSystemLabel), Result: $($result), $($computerName)"
+			Write-Log "Date: $($now), Volume Name: $($i.FileSystemLabel), Result: $($result), $($computerName)"
 		}
 	}
 }