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Mac Clean SoftwareSummary: People always plug USB external drive into many different computers. This makes USB external drive in big danger of data loss, like virus affection, system errors, etc. Then how to recover data on USB external drive? This article will guide you to find the lost.
The main reasons that cause data loss on USB external drive
1, Virus on computer. There are so many viruses in the network, anti-virus software may not find all of them. USB external drive is easily to be affected if anti-virus software is out of date or expired. Once USB external drive is affected by virus, your data may disappear, or you dare not to plug it onto your computer, then you have to format it. At this time, the date on this USB external drive will lose as well.
2, Remove USB external drive by pulling out the line directly. When USB external drive is writing data, somebody pull data transfer line out, the file system of USB external drive may be destroyed. And most of data (or all data) in this drive can't be recognized. So there are two kinds of situation: 1) you may not see the data in this drive; 2) you can't enter the drive.
3, Physically damaged. USB external drive can be taken to everywhere easily. The shock may destroy some important sectors, and then the drive can't be entered.
Do not forget to backup your data! Reliable and free backup software for Windows Server/Workstation/PC.
How to recover USB external drive
EaseUS Data Recovery Wizard is Useful, cost-efficient data recovery software to do format recovery and recover deleted files emptied from the Recycle Bin or restore data lost due to software crash, virus infection. It works perfectly even though the partition is formatted, damaged, deleted or lost. The data recovery software supports all hardware RAID, hard and external drives, IPOD, USB, SD and Memory Cards, etc.
Step A: Launch USB external drive recovery software, and choose a module according to the reason for data loss. "Deleted File Recovery" is for deletion recovery, "Complete Recovery" is for format recovery, and "Partition Recovery" is used when partition is lost or corrupted.

Step B: Select the file types you want to recover. Tick 'Search all lost files automatically' to find all lost file types. Tick 'Ignore bad sectors' to skip bad sectors when scanning.

Step C: Choose the volume where files are and click "NEXT" to start searching, and then you will see a list of volumes where data loss possibly happens. After that, Data Recovery Wizard will allow you to choose 4 volumes at best to recover. And then, press "NEXT" button, it will launch the "Building Directory" procedure to search the files. You will see file/folder tree very soon.

Step D: Choose and preview lost files that you want to recover and press the "Next" button. And then select a directory and press the "NEXT" button to save files on RAID partition.

We cannot perform USB external drive recovery at random, so we should test or try it before we use any USB external drive recovery software. Demo version of Data Recovery Wizard is provided to scan and preview lost files on USB external drive, and only with full version we could save the recovered files on USB external drive.
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