Your S3 bucket, sitting in This PC as a normal drive letter. This guide sets it up with TntDrive the safe way — a key that opens only one bucket, a two-minute test, and the honest limits nobody tells you.
✍️ Technical Anshu☁️ Amazon S3🪟 Windows 10 / 11
🎥 Watch the full setup in the video — TntDrive install, account add and drive mapping, step by step
Cloud storage is useful and annoying at the same time — every file means a browser tab, an upload button, a download wait. A mounted S3 drive removes that friction: open S:, copy, paste, done. In the video this setup is done with TntDrive, and this guide follows the same route, with the security steps done properly and the limits stated honestly.
TntDrive — Add New Account (example values only)
Account nameMy Backup Bucket
Storage typeAmazon S3 Storage
Access Key IDEXAMPLE-KEY-ID-0000
Secret Access Key••••••••••••••••
Mapped driveS: → my-backup-bucket
Example screen with fake example values. Never share a screenshot of your real keys — the secret key is a password.
1
Understand What This Drive Really Is
An S3 bucket is object storage, not a hard disk. TntDrive translates your clicks in File Explorer into requests to Amazon over the internet — open a folder and it asks S3 for a list, open a file and it downloads it, save a file and it uploads it. That is why the drive feels different from a local disk, and why being honest about this one point saves you every disappointment later.
What it is genuinely good at: keeping backups, project files, installers and documents one double-click away. What it is not built for: running live databases or apps that keep rewriting small pieces of a file. Used for the right jobs, it is one of the most useful tricks on a Windows PC.
2
Keep Three Things Ready Before You Start
An AWS account with one S3 bucket created — an empty bucket is fine
An IAM user made only for this drive, with an access key limited to that one bucket — never your AWS root key (the next guide on this page series shows the exact policy)
TntDrive, downloaded from the official TntDrive website — avoid random download sites for a tool that will hold your cloud keys
Honest note: TntDrive gives a fully functional 30-day free trial. After that it needs a paid licence — a one-time purchase, not a monthly subscription. The free alternative is Rclone, covered in the tool comparison guide in this series.
3
Install TntDrive and Restart Properly
Run the TntDrive installer and keep clicking Next with the default options
Choose whether to install it for all users on this PC or only for you
At the end the installer may ask for a restart — do it. TntDrive installs a Windows driver, and the driver only becomes fully active after a reboot
After the restart you will see the TntDrive icon — open it to reach the main window
4
Add Your S3 Account With the Scoped Key
In TntDrive, open Account and click Add Account
Give it a clear name — the name of the job or bucket, so future-you knows what it is
Paste the Access Key ID and Secret Access Key of the IAM user you made for this drive
Save it. If the bucket list does not load, your key probably does not have list-all-buckets permission — that is good security, not an error. Just type the bucket name manually in the next step
TntDrive stores this key on your PC so the drive can reconnect. Treat any PC with a mounted S3 drive as a PC that holds a key to your cloud — lock it, encrypt it, and keep one key per PC so a lost laptop is one deleted key, not a full account emergency.
5
Map the Bucket as a Drive Letter
Click Add New Drive and select the account you just added
Select your bucket (or type its exact name if the list was empty), and optionally one folder inside it
Pick a free drive letter — something memorable like S: for S3
Click Add new drive and open This PC — your bucket is sitting there like a normal drive
6
Do a Two-Minute Honest Test Before Trusting It
Copy one small text file into the drive, wait for it to finish, then open the AWS Console and confirm the file is really inside the bucket
Delete the file from the S3 drive and watch it disappear from the console too — this proves delete works, so be careful with it
Restart the PC once and confirm the drive comes back on its own
Only after this test should real work start living on the drive. And keep one rule from day one: the S3 drive is a place to keep copies — keep your only copy of nothing important here until you also understand versioning and backup, because a delete on this drive is a real delete in the cloud.
🔴 Never paste your AWS root account keys into any drive tool. Root keys control your whole account and your billing. Always create a separate IAM user whose key opens only the one bucket this drive needs — if that key ever leaks, the damage stays inside one bucket and you can kill the key in one click.
🎥 See the Complete Setup in the Video
Every click shown live — installing TntDrive, adding the S3 account and mapping the drive in Windows.
No. The drive is a window into your bucket, not a copy of it. Files you opened recently may open from the local cache while offline, but browsing, saving and syncing all need the internet. Treat offline work on this drive as read-only luck, not a feature.
Is TntDrive free?
TntDrive gives a fully functional 30-day free trial, after which it needs a paid licence — a one-time purchase with a year of upgrades included. If you want a completely free option, Rclone does the same job, but its setup is done by typing configuration instead of clicking a friendly window.
Can I run any software directly from the S3 drive?
Simple file opening works fine — documents, photos, videos, installers. But do not run live databases or multi-user accounting data directly from it. S3 has no real file locking and saves work by uploading whole files, so two people or one busy program writing together can corrupt data. Keep working files local, and keep the S3 drive for storage and sharing.
This guide is based on the Technical Anshu video on mounting an S3 bucket as a Windows drive • Stuck on a step? Ask in the video comments 🙏