you’re experiencing an issue where your pen drive gets automatically disconnected or removed when you try to copy a file larger than 2 MB onto it. This could be due to several reasons. Here are a few possible causes and solutions:
1. File System Format (FAT32 limitation)
- Cause: If your pen drive is formatted with the FAT32 file system, it has a 4 GB file size limit, but it may sometimes cause issues with certain file sizes if there are file system errors or if the drive is corrupted.
- Solution: Try reformatting the drive to NTFS or exFAT if you plan to transfer large files regularly. You can do this by:
- Right-click on the pen drive in File Explorer.
- Select Format.
- Choose exFAT (or NTFS) in the “File system” dropdown.
- Click Start (note: this will erase all data on the drive, so back it up first).
2. USB Port/Driver Issues
- Cause: There might be a problem with the USB port or the USB drivers on your computer, leading to disconnections when large files are transferred.
- Solution:
- Try plugging the pen drive into a different USB port on your computer, preferably a USB 3.0 or higher port.
- Update your USB drivers by going to Device Manager > Universal Serial Bus controllers > Right-click on the USB root hubs and choose Update driver.
3. Power Supply Issues
- Cause: Some older or low-power USB ports may not provide enough power for larger file transfers, especially if you’re using a USB hub.
- Solution:
- Try plugging the pen drive directly into a USB port on your computer.
- If you’re using a hub, connect the pen drive directly to the computer to rule out power issues.
4. Corrupted USB Pen Drive
- Cause: The pen drive might be corrupted or have bad sectors, which can cause it to disconnect when copying files.
- Solution:
- Run a disk check:
- Open Command Prompt as Administrator.
- Type
chkdsk X: /f
(replaceX
with your pen drive’s letter) and press Enter.
- Alternatively, you can use third-party tools to scan for and repair bad sectors.
- Run a disk check:
5. File Corruption or Error During Transfer
- Cause: The file you’re trying to transfer might be corrupted or there may be a glitch during the transfer process.
- Solution:
- Try copying a different file to see if the issue persists.
- If it happens with all large files, it’s likely an issue with the drive or port. If it’s just one file, it may be a file corruption issue.
6. Pen Drive Hardware Failure
- Cause: The pen drive itself could be malfunctioning.
- Solution: If none of the above steps work, try using a different pen drive to see if the issue persists.