tentative fix for issue #130

basilico.py

@@ -599,11 +599,11 @@ def _get_last_linux_partition_path_and_number(dev: str) -> tuple[str, str] | tup
         # PARTTYPENAME could be useful, too
         output = subprocess.getoutput(f"lsblk -o PATH,PARTN,PARTTYPE -J {dev}")
         jsonized = json.loads(output)
-        for entry in reversed(jsonized["blockdevices"]):
+        for i, entry in reversed(enumerate(jsonized["blockdevices"])):
             if entry["path"]:  # lsblk also returns the device itself, which has no partitions
                 # GPT or MBR Linux partition ID
                 if entry["parttype"] == "0fc63daf-8483-4772-8e79-3d69d8477de4" or entry["parttype"] == "0x83":
-                    return entry["path"], int(entry["path"][-1])  # Breaks if more than 9 partitions
+                    return entry["path"], (entry["partn"] if "partn" in entry else i)
         return None, None
 
     def cannolo(self, _cmd: str, dev_and_iso: str):