Without a working MBR, the media is useless. The Master Boot Record or the Partition Boot Record on the drive can become tarnished this is caused by constant wear and tear, or dropping the disk media. Over time, incorrectly ejecting external media may cause corruption, and the file system or the index table may become defective. This is even more likely if the USB drive is old or a cheaper, budget-oriented model.
If the media has been pulled from the USB port on many occasions, there is a good chance this has caused media issues, potentially damaging read/write sectors on the USB drive. Any external USB media must be safely ejected from a computer or laptop before being removed to do this, simply right click on the media icon in your operating system and click eject. If a USB attached device is removed prematurely or if the power supply is interrupted when the USB is still being accessed or written to, the chance of irreparable damage is high. The data recovery experts at Gillware have seen this “no media” problem countless times before, and there are several reasons why failure occurs. The result of this “removable disk no media” message is defunct external media and potentially lots of missing data. The problem manifests itself after you plug in the drive, and the drive shows “no media” despite being partially recognized by Windows Disk Management. Discovering the “no media” message when you plug in your external hard drive, USB Drive, Pen Drive, or USB Flash Drive is a frustrating experience.