Summary:

Windows requires me to format my external hard drive, While facing such a question, how to format external hard drive without losing data?

https://www.bitwar.net/data-recovery-software/
 
When I access my external hard drive, Windows says my external hard drive is not formatted and asks me if I want to format it. However, I have lots of important data on it, after formatted external hard drive, the data will gone. How to Recover Lost Data from Formatted External Hard Drive without losing data.
 
Before you want to format external hard drive, you should backup the important data first. If you can't perform a backup of the external hard drive, you must perform a data recovery first and then format external hard drive.

How to recover data from external hard drive?

You can try Bitwar Data Recovery to restore your data to your PC to ensure data security. It can be applied in various data loss situations. For example, system crash, hard drive formatting, virus attack, partition loss and other unknown reasons in Windows. And it's fully compatible with all Windows systems.
 
Free download Bitwar Data Recovery on its official website or click the button below, and install it on your computer very well. Please don't install it or save any data to the Prepare-to-format disk.

Step 1. Select the disk which is Prepare-to-format and you want to recover data from, then click "Next".
 

Step 2. Select a scan mode due to the reason your data lost and then click "Next". If you want to recover data from the disk that you are going to format, Select "quick Scan", and if you want to recover data from the disk that has been formatted already, you should select the "Formatted Recovery" mode. If files are not override by new data, files can be fully recovered.
 
However, if files are not found with the above scan mode, try "Deep Scan" to scan again. The deep scan can find all the files with a detailed scanning algorithm, but will not display the file names and may take longer time.

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