🔧 Introduction: Continue backup on a new or formatted computer
In this article, we explain how to set up backup on a computer that already has an existing backup on your Onlime account. We will guide you based on whether you are using the new or the old Onlime app.
1. New Onlime app for Windows and Mac (after 2026)
With the new Onlime app, it is not necessary to specify exactly the same device name as before to avoid your files being transferred again. Files that have already been uploaded to the server are never uploaded twice – regardless of what you name your device.
Log in with your Onlime credentials and follow the setup.
Go to Backup in the menu on the left and specify a new, unique device name – do not use the old name.
Add the folders you wish to back up and complete the setup.
If you attempt to use a device name that is already in use, you will see this error message:
✅ Onlime automatically cross-checks your files with what is already in the cloud. Files that have been previously uploaded will not be transferred again – regardless of the device name.
2. Old Onlime app (before 2026)
With the older Onlime app, it is important to follow the steps below carefully. You must use exactly the same device name as before – otherwise, a new backup set will be created, and your files will be transferred from scratch.
Log in to Onlime.dk ↗ with your login.
Go to the Backup tab and find the computer you wish to continue backing up to.
Note the device name exactly – including uppercase and lowercase letters, numbers, and characters. Copy it into a document if necessary.
Log in and follow the setup. Specify exactly the same device name as you noted in step 3.
Add the relevant folders for automatic backup and complete the setup.
Onlime will now scan your folders and cross-check them with your files in the cloud. Files that have already been uploaded will not be uploaded again.
Good to know
☁️ Files are never uploaded twice
Onlime always compares your local files with what is in the cloud before a backup is started. Only new or changed files are transferred – existing files are not affected.
💡 Avoid double consumption
By following the procedure above, you avoid creating a duplicate backup set and unnecessarily increasing your total storage usage.