> ## Documentation Index
> Fetch the complete documentation index at: https://docs.encord.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Add Files to Datasets

<Note>When using the legacy method [add\_private\_data\_to\_dataset\_start](/sdk-documentation/sdk-references/dataset#add-private-data-to-dataset-start) to upload files directly to a Dataset must specify a StorageFolder object or a folder uuid.</Note>

Once your data is uploaded in **Data** > **Files & Folders** it can be attached to multiple Datasets. The following scripts add all files in a specified folder to a Dataset.

* Replace `<private_key_path>` with the path to your private key.
* Replace `<folder_name>` with the name you want to give your Storage folder.
* Replace `<dataset_hash>` with the hash of the Dataset you want to add the data units to.

<Note>Files added to the folder at a later time **will not** be automatically added to the Dataset.</Note>

```python All files theme={"dark"}
from encord import EncordUserClient

# Authentication
user_client = EncordUserClient.create_with_ssh_private_key(
    ssh_private_key_path="<private_key_path>"
)

# Find the storage folder by name
folder_name = "<folder_name>"  # Replace with your folder's name
folders = list(user_client.find_storage_folders(search=folder_name, page_size=1))

dataset = user_client.get_dataset("<dataset_hash>")

# Ensure the folder was found
if folders:
    storage_folder = folders[0]

    # List all data units
    items = list(storage_folder.list_items())

    # Collect all item UUIDs
    item_uuids = [item.uuid for item in items]

    # Output the retrieved data units
    for item in items:
        print(f"UUID: {item.uuid}, Name: {item.name}, Type: {item.item_type}")

    # Link all items at once if there are any
    if item_uuids:
        dataset.link_items(item_uuids)
else:
    print("Folder not found.")
```