diff --git a/ogcp/forms/action_forms.py b/ogcp/forms/action_forms.py
index 94388c8..46081b5 100644
--- a/ogcp/forms/action_forms.py
+++ b/ogcp/forms/action_forms.py
@@ -86,7 +86,6 @@ class SoftwareForm(FlaskForm):
 class SessionForm(FlaskForm):
     ips = HiddenField()
     os = RadioField(label=_l('Session'), choices=[])
-    run = SubmitField(label=_l('Run'))
 
 class ImageRestoreForm(FlaskForm):
     ips = HiddenField()
diff --git a/ogcp/templates/actions/session.html b/ogcp/templates/actions/session.html
index 1e16a03..56865fb 100644
--- a/ogcp/templates/actions/session.html
+++ b/ogcp/templates/actions/session.html
@@ -16,10 +16,37 @@
 
 {{ macros.cmd_selected_clients(selected_clients) }}
 
-{{ wtf.quick_form(form,
-                  action=url_for('action_session'),
-                  method='post',
-                  button_map={'run': 'primary'},
-                  extra_classes='mx-5') }}
+<p>
+{% if os_groups|length > 1 %}
+The selected clients have different installed OS:
+{% endif %}
+</p>
+
+<form class="form-inline" method="POST" id="sessionForm">
+    <table class="table table-hover">
+        <thead class="thead-light">
+            <tr>
+                <th>{{ _('Operating System') }}</th>
+                <th>{{ _('Clients') }}</th>
+            </tr>
+        </thead>
+
+        <tbody data-target="partitons-fieldset" id="partitionsTable" class="text-left">
+                {{ form.hidden_tag() }}
+                {% for os_choice in form.os %}
+                    <tr data-toggle="fieldset-entry">
+                        <td class="radio-container">
+                            {{ os_choice(class_="form-control") }}
+                            <b>{{ os_choice.label.text }}</b>
+                        </td>
+                        <td>{{ ', '.join(os_groups[os_choice.data]) }}</td>
+                    </tr>
+                {% endfor %}
+        </tbody>
+    </table>
+    <button class="btn btn-success" form="sessionForm">
+        {{ _('Boot') }}
+    </button>
+</form>
 
 {% endblock %}
diff --git a/ogcp/views.py b/ogcp/views.py
index a5d5e2e..056c3e5 100644
--- a/ogcp/views.py
+++ b/ogcp/views.py
@@ -647,6 +647,7 @@ def action_setup_modify():
         for partition in form.partitions:
             if partition.part_type.data == 'CACHE':
                 cache_count += 1
+
         if cache_count == 0:
             flash(_(f'Missing cache partition'), category='error')
             return redirect(url_for('commands'))
@@ -957,23 +958,10 @@ def action_session():
     form = SessionForm(request.form)
     if request.method == 'POST':
         ips = form.ips.data.split(' ')
-        disk, partition = form.os.data.split(' ')
-
+        disk, partition, os_name = form.os.data.split(' ', 2)
         server = get_server_from_clients(list(ips))
-        r = server.post('/session', payload={'clients': ips,
-                                             'disk': str(disk),
-                                             'partition': str(partition)})
-        if r.status_code == requests.codes.ok:
-            return redirect(url_for('commands'))
-        return make_response("400 Bad Request", 400)
-    else:
-        ips = parse_elements(request.args.to_dict())
-        if not validate_elements(ips, max_len=1):
-            return redirect(url_for('commands'))
 
-        server = get_server_from_clients(list(ips))
-        form.ips.data = ' '.join(ips)
-        r = server.get('/session', payload={'client': list(ips)})
+        r = server.get('/session', payload={'clients': ips})
         if not r:
             return ogserver_down('commands')
         if r.status_code != requests.codes.ok:
@@ -982,18 +970,64 @@ def action_session():
         sessions = r.json()['sessions']
         if not sessions:
             flash(_('ogServer returned an empty session list'),
-              category='error')
+            category='error')
             return redirect(url_for('commands'))
 
-        for os in sessions:
-            choice = (f"{os['disk']} {os['partition']}",
-                      f"OS: {os['name']} (Disk:{os['disk']}, Partition:{os['partition']})")
-            form.os.choices.append(choice)
+        valid_ips = []
+        excluded_ips = []
+        for os, ip in zip(sessions, ips):
+            if os['disk'] == int(disk) and os['partition'] == int(partition) and os['name'] == os_name:
+                valid_ips.append(ip)
+            else:
+                excluded_ips.append(ip)
+
+        r = server.post('/session', payload={'clients': valid_ips,
+                                             'disk': str(disk),
+                                             'partition': str(partition)})
+        if r.status_code == requests.codes.ok:
+            if excluded_ips:
+                flash('The following clients didn\'t match the boot configuration: ' + str(excluded_ips))
+            return redirect(url_for('commands'))
+        return make_response("400 Bad Request", 400)
+    else:
+        ips = parse_elements(request.args.to_dict())
+        ips_list = list(ips)
+        if not validate_elements(ips):
+            return redirect(url_for('commands'))
+
+        server = get_server_from_clients(ips_list)
+        form.ips.data = ' '.join(ips_list)
+
+        r = server.get('/session', payload={'clients': ips_list})
+        if not r:
+            return ogserver_down('commands')
+        if r.status_code != requests.codes.ok:
+            return ogserver_error('commands')
+
+        sessions = r.json()['sessions']
+        if not sessions:
+            flash(_('ogServer returned an empty session list'),
+            category='error')
+            return redirect(url_for('commands'))
+
+        os_groups = {}
+        for os, ip in zip(sessions, ips_list):
+            item_key = f"{os['disk']} {os['partition']} {os['name']}"
+
+            if item_key in os_groups:
+                os_groups[item_key].append(ip)
+            else:
+                os_groups[item_key] = [ip]
+
+                choice = (item_key,
+                      f"{os['name']} (Disk:{os['disk']}, Partition:{os['partition']})")
+                form.os.choices.append(choice)
+
         scopes, clients = get_scopes(set(ips))
         selected_clients = list(get_selected_clients(scopes['scope']).items())
         return render_template('actions/session.html', form=form,
                                selected_clients=selected_clients,
-                               scopes=scopes)
+                               scopes=scopes, os_groups=os_groups)
 
 @app.route('/action/client/info', methods=['GET'])
 @login_required