How to Send Files From an External Hard Drive Online
Send files from an external hard drive with a stable upload, a clear folder structure, and a verification step before disconnecting the drive.
Published · Updated November 2, 2026 · 5 min read
To send files from an external hard drive online, connect the drive, locate the files you want to share, and select them for upload on FileFlap. Keep the drive connected and the computer awake until the upload completes, then test the download link before disconnecting anything.
Open a few files directly from the drive to confirm that they are readable. Check the size of the intended delivery, not the capacity printed on the drive. A two-terabyte disk might contain only a few gigabytes that the recipient actually needs.
Create a delivery folder or make a clear selection before uploading. Avoid sharing the entire drive by habit: it may contain backups, private documents, or older project versions. If the files belong to an editing or design project, include the required dependencies rather than only the main project file.
Choose between uploading directly and making a local copy
Uploading directly avoids the time and storage needed for an extra copy. It works best when the drive connection is reliable and the files will remain unchanged during the upload. Do not move or rename the selected files while a transfer is reading them.
A local staging copy can be useful if you need to disconnect the drive, reorganize the delivery, or keep the original project untouched. Check that your computer has enough free space first. Copying the files locally adds preparation time and does not make a slow internet connection faster.
Keep the upload stable
Use a reliable cable and avoid disturbing the drive connection.
Keep the computer powered for a long transfer.
Make sure sleep settings will not interrupt the session.
Wait for the transfer's completion confirmation before closing the page.
Do not erase the source files after creating the link.
If the drive disconnects during an upload, check what the transfer page reports. Resume behavior depends on the service and session; do not assume reconnecting the disk automatically repairs an interrupted transfer. Verify the selected files again before retrying.
Confirm the recipient can use the delivery
Send the link with the folder name, approximate size, and the file to open first. Download a test copy and inspect representative files. For a critical handoff, compare SHA-256 checksums with the source files to check that the downloaded bytes match.
Does the recipient need the same type of hard drive?
No. They receive the uploaded files rather than your physical disk. They still need sufficient storage and software that supports the file formats. A project dependent on your original local folder paths may need repackaging before it works on another computer.
Choosing a service for your next delivery? Our WeTransfer alternative guide starts with FileFlap and explains the delivery features to compare.
Plan around the source drive's role
An external drive may be your working project disk, a backup, or a temporary delivery copy. Treat those roles differently. If it is your only retained copy, avoid reorganizing or deleting files merely to make an upload easier. Create a separate delivery selection and preserve the structure that makes the original project usable.
If another person also needs the drive during the upload, agree on the schedule first. A long transfer depends on the source remaining available. Copying the intended package to local storage can remove that dependency, but only if there is enough space and the copy is checked. Do not confuse moving the files with making an additional retained copy.
Check the package size accurately
Count the selected files and review the total size of the actual delivery. A folder containing cached previews, temporary exports, or old revisions may be much larger than the useful handoff. Remove unnecessary material from a delivery copy, not from the working project by guesswork. When dependencies are involved, use the application's collection workflow and test the result.
Consider the recipient's storage as well. A compressed archive needs room to download and may require additional space to extract. Tell the recipient the approximate size of the usable package, not only the compressed file. That helps them choose a destination before the transfer is complete and reduces last-minute failures caused by a full drive.
Respond to a disconnect carefully
If the source drive disconnects, first restore a stable connection and confirm the files still open locally. Note the upload's reported state before taking further action. Some sessions may allow recovery while others require a fresh selection. Follow the actual interface rather than assuming that reconnecting the drive restores the previous upload automatically.
After retrying, verify which delivery link contains the complete package. If more than one link was created during troubleshooting, label or retire the incomplete attempt according to the available controls. Send only the checked link to the recipient so an upload recovery does not become a version-control problem.
Keep a useful transfer record
Record the source folder, delivery revision, transfer date, and recipient confirmation. For a large project, include an inventory or checksum list so both sides can identify missing or altered files. Keep the drive connected until the upload has completed and you have finished any source checks that require it. Then disconnect it using the normal safe-removal process for your system. Retain the source independently of the transfer link; delivery storage should not become the only remaining home for a project you may need again.
You can send files with a link through FileFlap when the package is ready. Name the approved revision in the accompanying message rather than relying on the link alone.
