diff --git a/ci/HACKING.md b/ci/HACKING.md
index ca3901f07..f2e6308d1 100644
--- a/ci/HACKING.md
+++ b/ci/HACKING.md
@@ -60,6 +60,8 @@ some PEP8 guidelines.
 * Function and class definitions have their braces on separate lines.
 * A function implementation's return type is on its own line.
 * `CamelCase.{cpp,h}` style file names.
+* Lambdas are preferrably indented to a 4-space tab, even when passed as an
+  argument to functions.
 
 Example:
 ```
diff --git a/src/modules/partition/core/BootLoaderModel.cpp b/src/modules/partition/core/BootLoaderModel.cpp
index 16c6ce3c8..e785050d2 100644
--- a/src/modules/partition/core/BootLoaderModel.cpp
+++ b/src/modules/partition/core/BootLoaderModel.cpp
@@ -23,9 +23,13 @@
 #include "core/PartitionInfo.h"
 #include "core/KPMHelpers.h"
 
+#include "utils/Logger.h"
+
 // KPMcore
 #include <kpmcore/core/device.h>
 
+#include <QComboBox>
+
 static QStandardItem*
 createBootLoaderItem( const QString& description, const QString& path, bool isPartition )
 {
@@ -47,12 +51,12 @@ BootLoaderModel::~BootLoaderModel()
 void
 BootLoaderModel::init( const QList< Device* >& devices )
 {
+    cDebug() << "BLM::init with" << devices.count() << "devices" << rowCount() << "rows";
     beginResetModel();
     blockSignals( true );
 
     m_devices = devices;
-    clear();
-    createMbrItems();
+    updateInternal();
 
     blockSignals( false );
     endResetModel();
@@ -74,6 +78,7 @@ BootLoaderModel::createMbrItems()
 void
 BootLoaderModel::update()
 {
+    cDebug() << "BLM::update holds" << m_devices.count() << "devices" << rowCount() << "rows";
     beginResetModel();
     blockSignals( true );
     updateInternal();
@@ -148,3 +153,48 @@ BootLoaderModel::data( const QModelIndex& index, int role ) const
     }
     return QStandardItemModel::data( index, role );
 }
+
+namespace Calamares
+{
+int
+findBootloader( const QAbstractItemModel* model, const QString& path )
+{
+    for ( int i = 0; i < model->rowCount(); ++i)
+    {
+        const auto index = model->index( i, 0, QModelIndex() );
+        if ( !index.isValid() )
+            continue;
+        QVariant var = model->data( index, BootLoaderModel::BootLoaderPathRole );
+        if ( var.isValid() && var.toString() == path )
+            return i;
+    }
+
+    return -1;
+}
+
+void
+restoreSelectedBootLoader( QComboBox& combo, const QString& path )
+{
+    const auto* model = combo.model();
+    if ( model->rowCount() < 1 )
+    {
+        cDebug() << "No items in BootLoaderModel";
+        return;
+    }
+
+    int r = -1;
+    if ( path.isEmpty() )
+    {
+        combo.setCurrentIndex( 0 );
+    }
+    else if ( (r = findBootloader( model, path )) >= 0 )
+    {
+        combo.setCurrentIndex( r );
+    }
+    else
+    {
+        combo.setCurrentIndex( 0 );
+    }
+}
+
+}  // namespace
diff --git a/src/modules/partition/core/BootLoaderModel.h b/src/modules/partition/core/BootLoaderModel.h
index fbbb9deb2..a2befad00 100644
--- a/src/modules/partition/core/BootLoaderModel.h
+++ b/src/modules/partition/core/BootLoaderModel.h
@@ -25,6 +25,7 @@
 #include <QStandardItemModel>
 
 class Device;
+class QComboBox;
 
 /**
  * This model contains one entry for each device MBR plus one entry for the
@@ -63,4 +64,20 @@ private:
     void updateInternal();
 };
 
+namespace Calamares
+{
+    /** @brief Returns the row number of boot-loader @p path (e.g. /dev/sda)
+     *
+     * Assuming the @p model is a BootLoaderModel, will return a row number
+     * in the model. Returns -1 otherwise.
+     */
+    int findBootloader( const QAbstractItemModel* model, const QString& path );
+
+    /** @brief Tries to set @p path as selected item in @p combo
+     *
+     * Matches a boot-loader install path (e.g. /dev/sda) with a model
+     * row and sets that as the current row.
+     */
+    void restoreSelectedBootLoader( QComboBox& combo, const QString& path );
+}  // namespace
 #endif /* BOOTLOADERMODEL_H */
diff --git a/src/modules/partition/core/ColorUtils.cpp b/src/modules/partition/core/ColorUtils.cpp
index 40f65d2ba..ffe45d443 100644
--- a/src/modules/partition/core/ColorUtils.cpp
+++ b/src/modules/partition/core/ColorUtils.cpp
@@ -22,6 +22,8 @@
 #include "core/KPMHelpers.h"
 #include "core/PartitionIterator.h"
 
+#include "utils/Logger.h"
+
 // KPMcore
 #include <kpmcore/core/partition.h>
 #include <kpmcore/fs/luks.h>
@@ -81,6 +83,12 @@ _findRootForPartition( PartitionNode* partition )
 QColor
 colorForPartition( Partition* partition )
 {
+    if ( !partition )
+    {
+        cWarning() << "NULL partition";
+        return FREE_SPACE_COLOR;
+    }
+
     if ( KPMHelpers::isPartitionFreeSpace( partition ) )
         return FREE_SPACE_COLOR;
     if ( partition->roles().has( PartitionRole::Extended ) )
diff --git a/src/modules/partition/core/PartitionCoreModule.cpp b/src/modules/partition/core/PartitionCoreModule.cpp
index 6dd2b6faf..4b23c86e4 100644
--- a/src/modules/partition/core/PartitionCoreModule.cpp
+++ b/src/modules/partition/core/PartitionCoreModule.cpp
@@ -402,7 +402,7 @@ PartitionCoreModule::deletePartition( Device* device, Partition* partition )
             deletePartition( device, childPartition );
     }
 
-    QList< Calamares::job_ptr >& jobs = deviceInfo->jobs;
+    Calamares::JobList& jobs = deviceInfo->jobs;
     if ( partition->state() == KPM_PARTITION_STATE(New) )
     {
         // First remove matching SetPartFlagsJobs
@@ -496,10 +496,10 @@ PartitionCoreModule::setPartitionFlags( Device* device,
     PartitionInfo::setFlags( partition, flags );
 }
 
-QList< Calamares::job_ptr >
+Calamares::JobList
 PartitionCoreModule::jobs() const
 {
-    QList< Calamares::job_ptr > lst;
+    Calamares::JobList lst;
     QList< Device* > devices;
 
 #ifdef DEBUG_PARTITION_UNSAFE
@@ -947,12 +947,7 @@ PartitionCoreModule::revertDevice( Device* dev, bool individualRevert )
     QList< Device* > devices;
     for ( DeviceInfo* const info : m_deviceInfos )
     {
-        // device is a QScopedPointer
-        if ( !info || info->device.isNull() )
-            continue;
-        if ( info->device->type() != Device::Type::Disk_Device )
-            continue;
-        else
+        if ( info && !info->device.isNull() && info->device->type() == Device::Type::Disk_Device )
             devices.append( info->device.data() );
     }
 
diff --git a/src/modules/partition/core/PartitionCoreModule.h b/src/modules/partition/core/PartitionCoreModule.h
index 906119a74..7faf67863 100644
--- a/src/modules/partition/core/PartitionCoreModule.h
+++ b/src/modules/partition/core/PartitionCoreModule.h
@@ -247,7 +247,7 @@ private:
         QScopedPointer< Device > device;
         QScopedPointer< PartitionModel > partitionModel;
         const QScopedPointer< Device > immutableDevice;
-        QList< Calamares::job_ptr > jobs;
+        Calamares::JobList jobs;
 
         // To check if LVM VGs are deactivated
         bool isAvailable;
diff --git a/src/modules/partition/gui/ChoicePage.cpp b/src/modules/partition/gui/ChoicePage.cpp
index 04eec56ed..5e8260dec 100644
--- a/src/modules/partition/gui/ChoicePage.cpp
+++ b/src/modules/partition/gui/ChoicePage.cpp
@@ -960,19 +960,18 @@ ChoicePage::updateActionChoicePreview( ChoicePage::InstallChoice choice )
             QLabel* sizeLabel = new QLabel( m_previewAfterFrame );
             layout->addWidget( sizeLabel );
             sizeLabel->setWordWrap( true );
-            connect( m_afterPartitionSplitterWidget, &PartitionSplitterWidget::partitionResized,
-                     this, [ this, sizeLabel ]( const QString& path,
-                                                qint64 size,
-                                                qint64 sizeNext )
-            {
-                Q_UNUSED( path )
-                sizeLabel->setText( tr( "%1 will be shrunk to %2MiB and a new "
-                                        "%3MiB partition will be created for %4." )
-                                    .arg( m_beforePartitionBarsView->selectionModel()->currentIndex().data().toString() )
-                                    .arg( CalamaresUtils::BytesToMiB( size ) )
-                                    .arg( CalamaresUtils::BytesToMiB( sizeNext ) )
-                                    .arg( *Calamares::Branding::ShortProductName ) );
-            } );
+            connect( m_afterPartitionSplitterWidget, &PartitionSplitterWidget::partitionResized, this,
+                [ this, sizeLabel ]( const QString& path, qint64 size, qint64 sizeNext )
+                {
+                    Q_UNUSED( path )
+                    sizeLabel->setText( tr( "%1 will be shrunk to %2MiB and a new "
+                                            "%3MiB partition will be created for %4." )
+                                        .arg( m_beforePartitionBarsView->selectionModel()->currentIndex().data().toString() )
+                                        .arg( CalamaresUtils::BytesToMiB( size ) )
+                                        .arg( CalamaresUtils::BytesToMiB( sizeNext ) )
+                                        .arg( *Calamares::Branding::ShortProductName ) );
+                }
+            );
 
             m_previewAfterFrame->show();
             m_previewAfterLabel->show();
@@ -1025,18 +1024,25 @@ ChoicePage::updateActionChoicePreview( ChoicePage::InstallChoice choice )
                 eraseBootloaderLabel->setText( tr( "Boot loader location:" ) );
 
                 m_bootloaderComboBox = createBootloaderComboBox( eraseWidget );
-                connect( m_core, &PartitionCoreModule::deviceReverted,
-                         this, [ this ]( Device* dev )
-                {
-                    Q_UNUSED( dev )
-                    if ( !m_bootloaderComboBox.isNull() )
+                connect( m_core->bootLoaderModel(), &QAbstractItemModel::modelReset,
+                    [ this ]()
                     {
-                        if ( m_bootloaderComboBox->model() != m_core->bootLoaderModel() )
-                            m_bootloaderComboBox->setModel( m_core->bootLoaderModel() );
-
-                        m_bootloaderComboBox->setCurrentIndex( m_lastSelectedDeviceIndex );
+                        if ( !m_bootloaderComboBox.isNull() )
+                            Calamares::restoreSelectedBootLoader( *m_bootloaderComboBox, m_core->bootLoaderInstallPath() );
                     }
-                }, Qt::QueuedConnection );
+                );
+                connect( m_core, &PartitionCoreModule::deviceReverted, this,
+                    [ this ]( Device* dev )
+                    {
+                        Q_UNUSED( dev )
+                        if ( !m_bootloaderComboBox.isNull() )
+                        {
+                            if ( m_bootloaderComboBox->model() != m_core->bootLoaderModel() )
+                                m_bootloaderComboBox->setModel( m_core->bootLoaderModel() );
+
+                            m_bootloaderComboBox->setCurrentIndex( m_lastSelectedDeviceIndex );
+                        }
+                    }, Qt::QueuedConnection );
                 // ^ Must be Queued so it's sure to run when the widget is already visible.
 
                 eraseLayout->addWidget( m_bootloaderComboBox );
diff --git a/src/modules/partition/gui/PartitionPage.cpp b/src/modules/partition/gui/PartitionPage.cpp
index 647a69d5d..915f899b2 100644
--- a/src/modules/partition/gui/PartitionPage.cpp
+++ b/src/modules/partition/gui/PartitionPage.cpp
@@ -219,7 +219,7 @@ PartitionPage::onNewPartitionTableClicked()
         m_core->createPartitionTable( device, type );
     }
     delete dlg;
-    // PartionModelReset isn't emmited after createPartitionTable, so we have to manually update
+    // PartionModelReset isn't emitted after createPartitionTable, so we have to manually update
     // the bootLoader index after the reset.
     updateBootLoaderIndex();
 }
@@ -511,45 +511,10 @@ PartitionPage::updateSelectedBootLoaderIndex()
     cDebug() << "Selected bootloader index" << m_lastSelectedBootLoaderIndex;
 }
 
-int
-findBootloader( const QAbstractItemModel* model, const QString& path )
-{
-    for ( int i = 0; i < model->rowCount(); ++i)
-    {
-        const auto index = model->index( i, 0, QModelIndex() );
-        if ( !index.isValid() )
-            continue;
-        QVariant var = model->data( index, BootLoaderModel::BootLoaderPathRole );
-        if ( var.isValid() && var.toString() == path )
-            return i;
-    }
-
-    return -1;
-}
-
 void
 PartitionPage::restoreSelectedBootLoader()
 {
-    const auto* model = m_ui->bootLoaderComboBox->model();
-    if ( model->rowCount() < 1 )
-    {
-        cDebug() << "No items in BootLoaderModel";
-        return;
-    }
-
-    int r = -1;
-    if ( m_core->bootLoaderInstallPath().isEmpty() )
-    {
-        m_ui->bootLoaderComboBox->setCurrentIndex( 0 );
-    }
-    else if ( (r = findBootloader( model, m_core->bootLoaderInstallPath() )) >= 0 )
-    {
-        m_ui->bootLoaderComboBox->setCurrentIndex( r );
-    }
-    else
-    {
-        m_ui->bootLoaderComboBox->setCurrentIndex( 0 );
-    }
+    Calamares::restoreSelectedBootLoader( *(m_ui->bootLoaderComboBox), m_core->bootLoaderInstallPath() );
 }
 
 
diff --git a/src/modules/partition/gui/PartitionViewStep.cpp b/src/modules/partition/gui/PartitionViewStep.cpp
index 2e186b3a8..58fa17674 100644
--- a/src/modules/partition/gui/PartitionViewStep.cpp
+++ b/src/modules/partition/gui/PartitionViewStep.cpp
@@ -619,7 +619,7 @@ PartitionViewStep::setConfigurationMap( const QVariantMap& configurationMap )
 }
 
 
-QList< Calamares::job_ptr >
+Calamares::JobList
 PartitionViewStep::jobs() const
 {
     return m_core->jobs();
@@ -638,7 +638,11 @@ PartitionViewStep::checkRequirements()
         []{ return tr( "has at least one disk device available." ); },
         []{ return tr( "There are no partitons to install on." ); },
         m_core->deviceModel()->rowCount() > 0,  // satisfied
-        true    // required
+#ifdef DEBUG_PARTITION_UNSAFE
+             false  // optional
+#else
+             true   // required
+#endif
     } );
 
     return l;
diff --git a/src/modules/partition/gui/PartitionViewStep.h b/src/modules/partition/gui/PartitionViewStep.h
index 47f8fa127..e3d058e67 100644
--- a/src/modules/partition/gui/PartitionViewStep.h
+++ b/src/modules/partition/gui/PartitionViewStep.h
@@ -69,7 +69,7 @@ public:
 
     void setConfigurationMap( const QVariantMap& configurationMap ) override;
 
-    QList< Calamares::job_ptr > jobs() const override;
+    Calamares::JobList jobs() const override;
 
     Calamares::RequirementsList checkRequirements() override;