src: change generic exception types to be more explicit

Replace exception types to be more explicit about the nature of
the error.
Improve the exception raising semantics by using the 'from' keyword,
this wraps an older exception into a new one so it is still considered
the same object.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/live/ogOperations.py b/src/live/ogOperations.py
index d564ea9..d3b9d58 100644
--- a/src/live/ogOperations.py
+++ b/src/live/ogOperations.py
@@ -172,11 +172,11 @@ class OgLiveOperations:
         except:
             self._restartBrowser(self._url)
             if (not os.path.exists(image_path)):
-                raise ValueError(f'Image file {image_path} does not exist')
+                raise RuntimeError(f'Image file {image_path} does not exist')
             if (not tip_check_csum(repo, name)):
-                raise ValueError(f'checksum file {name}.full.sum is missing in repository {repo}')
+                raise RuntimeError(f'checksum file {name}.full.sum is missing in repository {repo}')
 
-            raise ValueError(f'Unexpected error when restoring image file {image_path}')
+            raise RuntimeError(f'Unexpected error when restoring image file {image_path}')
 
         self._restore_image(image_path, devpath)