diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index e012c64..ace8d68 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -84,7 +84,12 @@ MainWindow::MainWindow(QWidget *parent)
         }
     });
 
-    scanDevices();
+    QPair<QStringList, QJsonArray> values = Utils.scanDevices(initializing);
+    deviceOutputs = values.first;
+    devices = values.second;
+    if (!deviceOutputs.isEmpty()) {
+        updateUI();
+    }
     this->setFocus();
     initializing = false;
 }
@@ -116,51 +121,6 @@ void MainWindow::updateNavigationButtons(int currentIndex)
     nextButton->setEnabled(currentIndex < buttonGroup->buttons().size() - 1||ui->actionCyclic_Navigation->isChecked());
 }
 
-void MainWindow::scanDevices()
-{
-    QString output = getSmartctlOutput({"--scan", "--json"}, false);
-    QJsonDocument doc = QJsonDocument::fromJson(output.toUtf8());
-    QJsonObject jsonObj = doc.object();
-    devices = jsonObj["devices"].toArray();
-    QString smartctlPath = Utils.getSmartctlPath();
-    QStringList commandList;
-
-    for (const QJsonValue &value : std::as_const(devices)) {
-        QJsonObject device = value.toObject();
-        QString deviceName = device["name"].toString();
-        commandList.append(QString(smartctlPath + " --all --json=o %1").arg(deviceName));
-    }
-    QString command = commandList.join(" ; ");
-
-    if (smartctlPath.isEmpty()) {
-        QMessageBox::critical(this, tr("KDiskInfo Error"), tr("smartctl was not found, please install it!"));
-        QTimer::singleShot(0, qApp, &QApplication::quit);
-    }
-
-    QString allDevicesOutput = getSmartctlOutput({"sh", "-c", command}, true);
-
-    int startIndex = 0;
-    int endIndex = 0;
-
-    static const QRegularExpression regex("\\}\\n\\{");
-
-    while ((endIndex = allDevicesOutput.indexOf(regex, startIndex)) != -1) {
-        ++endIndex;
-        QString jsonFragment = allDevicesOutput.mid(startIndex, endIndex - startIndex);
-        deviceOutputs.append(jsonFragment);
-        startIndex = endIndex;
-    }
-
-    if (startIndex < allDevicesOutput.size()) {
-        QString jsonFragment = allDevicesOutput.mid(startIndex);
-        deviceOutputs.append(jsonFragment);
-    }
-
-    if (!allDevicesOutput.isEmpty()) {
-        updateUI();
-    }
-}
-
 void MainWindow::updateUI()
 {
     bool firstTime = true;
@@ -1003,41 +963,6 @@ void MainWindow::addSmartAttributesTable(const QJsonArray &attributes)
     tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
 }
 
-QString MainWindow::getSmartctlOutput(const QStringList &arguments, bool root)
-{
-    QProcess process;
-    QString command;
-
-    if (root) {
-        command = "pkexec";
-    } else {
-        command = Utils.getSmartctlPath();
-    }
-
-    if (!Utils.getSmartctlPath().isEmpty()) {
-        process.start(command, arguments);
-        process.waitForFinished(-1);
-    }
-
-    if (process.exitCode() == 127) {
-        QMessageBox::critical(this, tr("KDiskInfo Error"), tr("KDiskInfo needs root access in order to read S.M.A.R.T. data!"));
-        if (initializing) {
-            QTimer::singleShot(0, qApp, &QApplication::quit);
-        }
-        return QString();
-    }
-
-    if (root && !initializing) {
-        clearButtonGroup();
-    }
-
-    if (process.isOpen()) {
-        return process.readAllStandardOutput();
-    } else {
-        return QString();
-    }
-}
-
 QString MainWindow::toTitleCase(const QString& sentence) {
     QString result;
     bool capitalizeNext = true;
@@ -1061,18 +986,6 @@ QString MainWindow::toTitleCase(const QString& sentence) {
     return result;
 }
 
-void MainWindow::clearButtonGroup()
-{
-    QList<QAbstractButton*> buttons = buttonGroup->buttons();
-    for (QAbstractButton* button : buttons) {
-        buttonGroup->removeButton(button);
-        delete button;
-    }
-    horizontalLayout->removeItem(buttonStretch);
-    delete buttonStretch;
-    menuDisk->clear();
-}
-
 void MainWindow::on_actionQuit_triggered()
 {
     qApp->quit();
@@ -1116,7 +1029,13 @@ void MainWindow::on_actionGitHub_triggered()
 
 void MainWindow::on_actionRescan_Refresh_triggered()
 {
-    scanDevices();
+    QPair<QStringList, QJsonArray> values = Utils.scanDevices(initializing);
+    deviceOutputs = values.first;
+    devices = values.second;
+    if (!deviceOutputs.isEmpty()) {
+        Utils.clearButtonGroup(buttonGroup, horizontalLayout, buttonStretch, menuDisk);
+        updateUI();
+    }
 }
 
 
@@ -1134,7 +1053,7 @@ void MainWindow::on_actionIgnore_C4_Reallocation_Event_Count_toggled(bool enable
 {
     settings.setValue("IgnoreC4", ui->actionIgnore_C4_Reallocation_Event_Count->isChecked());
     if (!initializing) {
-        clearButtonGroup();
+        Utils.clearButtonGroup(buttonGroup, horizontalLayout, buttonStretch, menuDisk);
         updateUI();
     }
 }
@@ -1144,7 +1063,7 @@ void MainWindow::on_actionHEX_toggled(bool enabled)
 {
     settings.setValue("HEX", ui->actionHEX->isChecked());
     if (!initializing) {
-        clearButtonGroup();
+        Utils.clearButtonGroup(buttonGroup, horizontalLayout, buttonStretch, menuDisk);
         updateUI();
     }
 }
@@ -1154,7 +1073,7 @@ void MainWindow::on_actionUse_Fahrenheit_toggled(bool enabled)
 {
     settings.setValue("Fahrenheit", ui->actionUse_Fahrenheit->isChecked());
     if (!initializing) {
-        clearButtonGroup();
+        Utils.clearButtonGroup(buttonGroup, horizontalLayout, buttonStretch, menuDisk);
         updateUI();
     }
 }
@@ -1169,7 +1088,7 @@ void MainWindow::on_actionCyclic_Navigation_toggled(bool cyclicNavigation)
 QString MainWindow::initiateSelfTest(const QString &testType, const QString &deviceNode)
 {
     QProcess process;
-    QString command = Utils.getSmartctlPath();
+    QString command = Utils.getSmartctlPath(initializing);
     QStringList arguments;
     arguments << command << "--json=o" << "-t" << testType << deviceNode;
 
@@ -1186,7 +1105,7 @@ QString MainWindow::initiateSelfTest(const QString &testType, const QString &dev
 void MainWindow::cancelSelfTest(const QString &deviceNode)
 {
     QProcess process;
-    QString command = Utils.getSmartctlPath();
+    QString command = Utils.getSmartctlPath(initializing);
     QStringList arguments;
     arguments << command << "-X" << deviceNode;
 
@@ -1215,7 +1134,7 @@ void MainWindow::on_actionUse_GB_instead_of_TB_toggled(bool gigabytes)
 {
     settings.setValue("UseGB", ui->actionUse_GB_instead_of_TB->isChecked());
     if (!initializing) {
-        clearButtonGroup();
+        Utils.clearButtonGroup(buttonGroup, horizontalLayout, buttonStretch, menuDisk);
         updateUI();
     }
 }
diff --git a/src/mainwindow.h b/src/mainwindow.h
index c8bfbcc..e1389b6 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -94,7 +94,6 @@ private:
     void onNextButtonClicked();
     void onPrevButtonClicked();
     void updateNavigationButtons(int currentIndex);
-    void scanDevices();
     void updateUI();
     void selfTestHandler(const QString &mode, const QString &name, const QString &minutes);
     void populateWindow(const QJsonObject &tempObj, const QString &health, const QVector<QPair<QString, int>>& nvmeLogOrdered = QVector<QPair<QString, int>>());
@@ -102,7 +101,6 @@ private:
     void addSmartAttributesTable(const QJsonArray &attributes);
     QString getSmartctlOutput(const QStringList &arguments, bool root);
     QString toTitleCase(const QString& sentence);
-    void clearButtonGroup();
     QString initiateSelfTest(const QString &testType, const QString &deviceNode);
     void cancelSelfTest(const QString &deviceNode);
     void mousePressEvent(QMouseEvent*);
diff --git a/src/utils.cpp b/src/utils.cpp
index a401302..e5a79a3 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -2,7 +2,19 @@
 
 utils::utils() {}
 
-QString utils::getSmartctlPath() {
+void utils::clearButtonGroup(QButtonGroup* buttonGroup, QHBoxLayout* horizontalLayout, QSpacerItem* buttonStretch, QMenu* menuDisk)
+{
+    QList<QAbstractButton*> buttons = buttonGroup->buttons();
+    for (QAbstractButton* button : buttons) {
+        buttonGroup->removeButton(button);
+        delete button;
+    }
+    horizontalLayout->removeItem(buttonStretch);
+    delete buttonStretch;
+    menuDisk->clear();
+}
+
+QString utils::getSmartctlPath(bool initializing) {
     QStringList paths = QString::fromLocal8Bit(qgetenv("PATH")).split(QDir::listSeparator(), Qt::SkipEmptyParts);
 
     paths << "/usr/sbin" << "/usr/local/sbin";
@@ -16,3 +28,83 @@ QString utils::getSmartctlPath() {
 
     return QString();
 }
+
+QString utils::getSmartctlOutput(const QStringList &arguments, bool root, bool initializing)
+{
+    QProcess process;
+    QString command;
+
+    if (root) {
+        command = "pkexec";
+    } else {
+        command = getSmartctlPath(initializing);
+    }
+
+    if (!getSmartctlPath(initializing).isEmpty()) {
+        process.start(command, arguments);
+        process.waitForFinished(-1);
+    }
+
+    if (process.exitCode() == 127) {
+        QMessageBox::critical(nullptr, QObject::tr("KDiskInfo Error"), QObject::tr("KDiskInfo needs root access in order to read S.M.A.R.T. data!"));
+        if (initializing) {
+            QTimer::singleShot(0, qApp, &QApplication::quit);
+        }
+        return QString();
+    }
+
+    if (process.isOpen()) {
+        return process.readAllStandardOutput();
+    } else {
+        return QString();
+    }
+}
+
+
+QPair<QStringList, QJsonArray> utils::scanDevices(bool initializing)
+{
+    QString output = getSmartctlOutput({"--scan", "--json"}, false, initializing);
+    QJsonDocument doc = QJsonDocument::fromJson(output.toUtf8());
+    QJsonObject jsonObj = doc.object();
+    QJsonArray devices = jsonObj["devices"].toArray();
+    QString smartctlPath = getSmartctlPath(initializing);
+    QStringList commandList;
+    QStringList deviceOutputs;
+
+    for (const QJsonValue &value : std::as_const(devices)) {
+        QJsonObject device = value.toObject();
+        QString deviceName = device["name"].toString();
+        commandList.append(QString(smartctlPath + " --all --json=o %1").arg(deviceName));
+    }
+    QString command = commandList.join(" ; ");
+
+    if (smartctlPath.isEmpty()) {
+        QMessageBox::critical(nullptr, QObject::tr("KDiskInfo Error"), QObject::tr("smartctl was not found, please install it!"));
+        QTimer::singleShot(0, qApp, &QApplication::quit);
+    }
+
+    QString allDevicesOutput = getSmartctlOutput({"sh", "-c", command}, true, initializing);
+
+    int startIndex = 0;
+    int endIndex = 0;
+
+    static const QRegularExpression regex("\\}\\n\\{");
+
+    while ((endIndex = allDevicesOutput.indexOf(regex, startIndex)) != -1) {
+        ++endIndex;
+        QString jsonFragment = allDevicesOutput.mid(startIndex, endIndex - startIndex);
+        deviceOutputs.append(jsonFragment);
+        startIndex = endIndex;
+    }
+
+    if (startIndex < allDevicesOutput.size()) {
+        QString jsonFragment = allDevicesOutput.mid(startIndex);
+        deviceOutputs.append(jsonFragment);
+    }
+
+    if (!allDevicesOutput.isEmpty()) {
+        return QPair<QStringList, QJsonArray>(deviceOutputs, devices);
+    } else {
+        return QPair<QStringList, QJsonArray>(QStringList(), QJsonArray());
+    }
+}
diff --git a/src/utils.h b/src/utils.h
index 3b649d3..ad25b3c 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1,17 +1,37 @@
 #ifndef UTILS_H
 #define UTILS_H
 
-#include <QString>
+#include <QMainWindow>
 #include <QProcess>
-#include <QDir>
-#include <QFile>
+#include <QWidget>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QButtonGroup>
+#include <QAction>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QDesktopServices>
+#include <QUrl>
+#include <QTimer>
+#include <QSettings>
+#include <QMouseEvent>
+#include <QActionGroup>
+#include <QHBoxLayout>
+#include <QSpacerItem>
+#include <QAbstractButton>
+#include <QMenu>
+#include <QApplication>
 
 class utils
 {
 public:
     utils();
 
-    QString getSmartctlPath();
+    void clearButtonGroup(QButtonGroup* buttonGroup, QHBoxLayout* horizontalLayout, QSpacerItem* buttonStretch, QMenu* menuDisk);
+    QString getSmartctlPath(bool initializing);
+    QString getSmartctlOutput(const QStringList &arguments, bool root, bool initializing);
+    QPair<QStringList, QJsonArray> scanDevices(bool initializing);
 };
 
 #endif // UTILS_H