# Buggy code
def save_link(self, path_info):
    """Adds the specified path to the list of links created by dvc. This
    list is later used on `dvc checkout` to cleanup old links.

    Args:
        path_info (dict): path info to add to the list of links.
    """
    assert path_info.scheme == "local"
    path = fspath_py35(path_info)

    if not os.path.exists(path):
        return

    mtime, _ = get_mtime_and_size(path)
    inode = get_inode(path)
    relpath = os.path.relpath(path, self.root_dir)

    cmd = 'REPLACE INTO {}(path, inode, mtime) VALUES ("{}", {}, "{}")'.format(
        self.LINK_STATE_TABLE, relpath, self._to_sqlite(inode), mtime
    )
    self._execute(cmd)


# Traceback (ValueError)
ERROR: failed to pull data from the cloud - path is on mount 'F:', start on mount 'C:'
Traceback (most recent call last):
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\command\data_sync.py", line 46, in
do_run recursive=self.args.recursive,
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\repo\pull.py", line 24, in pull
recursive=recursive,
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\repo\fetch.py", line 27, in fetch
used, jobs, remote=remote, show_checksums=show_checksums
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\data_cloud.py", line 144, in pull
show_checksums=show_checksums,
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 493, in pull
download=True,
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 459, in _process
download=download,
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 358, in status
local_exists = self.cache_exists(md5s)
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 232, in cache_exists
return list(filter(lambda md5: not self.changed_cache_file(md5), md5s))
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 232, in <lambda>
return list(filter(lambda md5: not self.changed_cache_file(md5), md5s))
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\base.py", line 518, in changed_cache_file
actual = self.get_checksum(cache_info)
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\base.py", line 275, in get_checksum
checksum = self.get_file_checksum(path_info)
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\remote\local\__init__.py", line 208, in get_file_checksum
return file_md5(path_info.path)[0]
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\site-packages\dvc\utils\__init__.py", line 48, in file_md5                      logger.info(msg.format(os.path.relpath(fname)))
File "c:\users\srg\appdata\local\continuum\anaconda3\envs\tf-keras\lib\ntpath.py", line 584, in relpath
path_drive, start_drive))                                                                                                                        ValueError: path is on mount 'F:', start on mount 'C:'

# Fixed code
def save_link(self, path_info):
    """Adds the specified path to the list of links created by dvc. This
    list is later used on `dvc checkout` to cleanup old links.

    Args:
        path_info (dict): path info to add to the list of links.
    """
    assert path_info.scheme == "local"
    path = fspath_py35(path_info)

    if not os.path.exists(path):
        return

    mtime, _ = get_mtime_and_size(path)
    inode = get_inode(path)
    relative_path = relpath(path, self.root_dir)

    cmd = 'REPLACE INTO {}(path, inode, mtime) VALUES ("{}", {}, "{}")'.format(
        self.LINK_STATE_TABLE,
        relative_path,
        self._to_sqlite(inode),
        mtime,
    )
    self._execute(cmd)