diff --git a/pmb/install/losetup.py b/pmb/install/losetup.py
index ab1ad65f07dababa56e340e033d2bf63d3a83539..6e2b313d9437c807617d1ec24771e317ded51c04 100644
--- a/pmb/install/losetup.py
+++ b/pmb/install/losetup.py
@@ -13,7 +13,7 @@ import pmb.chroot
 from pmb.core import Chroot
 
 
-def init() -> None:
+def init():
     if not Path("/sys/module/loop").is_dir():
         pmb.helpers.run.root(["modprobe", "loop"])
     for loopdevice in Path("/dev/").glob("loop*"):
@@ -22,7 +22,7 @@ def init() -> None:
         pmb.helpers.mount.bind_file(loopdevice, Chroot.native() / loopdevice)
 
 
-def mount(img_path: Path, _sector_size: int | None = None) -> Path:
+def mount(img_path: Path, _sector_size: int | None = None):
     """
     :param img_path: Path to the img file inside native chroot.
     """
@@ -56,8 +56,6 @@ def mount(img_path: Path, _sector_size: int | None = None) -> Path:
                 raise e
             pass
 
-    raise AssertionError("This should never be reached")
-
 
 def device_by_back_file(back_file: Path) -> Path:
     """
@@ -77,7 +75,7 @@ def device_by_back_file(back_file: Path) -> Path:
     raise RuntimeError(f"Failed to find loop device for {back_file}")
 
 
-def umount(img_path: Path) -> None:
+def umount(img_path: Path):
     """
     :param img_path: Path to the img file inside native chroot.
     """
@@ -90,17 +88,18 @@ def umount(img_path: Path) -> None:
     pmb.chroot.root(["losetup", "-d", device])
 
 
-def detach_all() -> None:
+def detach_all():
     """
     Detach all loop devices used by pmbootstrap
     """
-    losetup_output = pmb.chroot.root(["losetup", "--json", "--list"], output_return=True)
+    losetup_output = pmb.helpers.run.root(["losetup", "--json", "--list"], output_return=True)
     if not losetup_output:
         return
     losetup = json.loads(losetup_output)
     work = get_context().config.work
     for loopdevice in losetup["loopdevices"]:
+        print(loopdevice["back-file"])
         if Path(loopdevice["back-file"]).is_relative_to(work):
-            pmb.chroot.root(["kpartx", "-d", loopdevice["name"]], check=False)
-            pmb.chroot.root(["losetup", "-d", loopdevice["name"]])
+            pmb.helpers.run.root(["kpartx", "-d", loopdevice["name"]], check=False)
+            pmb.helpers.run.root(["losetup", "-d", loopdevice["name"]])
     return