Format: erase also iso 9660 descriptor before formatting (mga#34877)

Improve progress bar

2 files changed, 4 insertions, 2 deletions

diff --git a/backend/raw_write.py b/backend/raw_write.py
index 2a9f126..f06d8ad 100755
--- a/backend/raw_write.py
+++ b/backend/raw_write.py
@@ -202,8 +202,8 @@ class Dumper(object):
         logging.debug(f"Start doing partition on {target} with label {label} in order {order}")
         if order == b"1":
             logging.debug("Erasing MBR")
-            # First erase MBR and partition table , if any
-            p = run(["dd", "if=/dev/zero", "of=%s" % target, "bs=512", "count=1"], capture_output=True)
+            # First erase MBR and partition table , if any, until iso 9660 descriptor
+            p = run(["dd", "if=/dev/zero", "of=%s" % target, "bs=512", "count=34K"], capture_output=True)
             if p.returncode != 0:
                     print(stderr)
                     self.return_message = _("Writing error.")
diff --git a/lib/isodumper.py b/lib/isodumper.py
index f9ecbd9..2ac7feb 100755
--- a/lib/isodumper.py
+++ b/lib/isodumper.py
@@ -476,6 +476,7 @@ class IsoDumper(basedialog.BaseDialog):
                 self.warning,
             )
             if self.ask_YesOrNo(info):
+                self.progress.setEnabled()
                 name = self.partition_label.value()
                 if format_type == "fat32" or format_type == "exfat":
                     name = name.upper()[:11]
@@ -494,6 +495,7 @@ class IsoDumper(basedialog.BaseDialog):
                     self.dialog.pollEvent()
                     time.sleep(0.5)
                 if self.iface.state:
+                    self.progress.setValue(100)
                     message = _("The device was formatted successfully.")
                     rc = True
                 else: