Hello @정연 윤 ,
Welcome to Microsoft Q&A platform.
You can use Azure Storage Explorer to upload files to ADLS gen1 account.
Here is an example of uploading a file more than 2GB to ADLS Gen1 account using Azure Storage Explorer:
Reference: Manage Azure Data Lake Storage Gen1 resources by using Storage Explorer.
Hope this helps. Do let us know if you any further queries.
------------
Please don’t forget to Accept Answer
and Up-Vote
wherever the information provided helps you, this can be beneficial to other community members.