External USB drives are mainly used for additional data storage and easy data transfer from one system to other system. There are different types of external USB drives such as pen drive, external hard drive etc. External USB drives can be connected to the computer via USB port. These external USB drives are mounted inside a separate case, which works in the same way as internal hard drives and are capable of storing large amount of information. As of now, the maximum storage capacity of external hard drive is 2TB and the maximum storage capacity of USB flash drives is 256GB. External hard drives are useful even for sharing files on your wireless network. Because, some of the wireless routers have USB ports that allows you to connect external hard drive directly to routers and share the files with others on wireless network.
Flash USB drives use flash memory and can be connected directly through USB port. USB 3.0 interface provides higher performance compared to USB 2.0 and USB 1.1. Additionally, USB 3.0 is optimized for less overhead and lower power consumption. USB 3.0 considerably reduces the time it takes to transfer files from one device to other storage device because, it offers data transfer speed of 5Gbps. Some of the flash USB drives provide security in terms of data encryption, passwords and fingerprint. The external USB drive that uses fingerprint security does not allow to access the data without correct fingerprints. Although, there are several reasons that might results in loss of data. You can even restore data from Toshiba HDD after MBR corruption on Windows and Mac OS X. Know more at http://www.recoverdrive.net/restore-wd-scorpio-laptop-hard-drive-after-mbr-corruption.html.
Most common data loss scenarios are explained as follows:
Sudden power failure during data transfer: As external USB drives are mainly used to transfer files, there are more chances of data loss during data transfer due to sudden power failure. Power outages may corrupt the file system of flash USB drives. Once the file system of USB drive gets corrupted, the files becomes inaccessible resulting in data loss. Because, file system is the important log which keeps record of all the files stored on flash USB drives
Accidental deletion of files using “Shift+Del” keys from external hard drives: Generally, data that has been deleted using Windows explorer can be restored from Recycle Bin. If you have deleted files using “Shift+Del” keys then you cannot restore it from Recycle Bin because, the data that has been deleted from external hard drive using “Shift+Del” keys bypasses the Recycle Bin. Therefore, accidentally deleting files using “Shift+Del” keys results in loss of files
Abrupt removal of flash USB drive: When you connect external USB drive to computer, your computer recognize it, assigns a drive letter and Operating System of the computer starts accessing the file system of USB flash drive. If you want to disconnect the USB flash drive then you need to use “Safely Remove Hardware” icon to remove it safely before removing it physically. Because, removing USB drive or any other external storage device using this option informs the Operating System to stop accessing the file system of that particular device. Thus, accidentally or abruptly removing USB drive may results in data loss. You can very easily recover flash drive data using the recovery software.
Requirements: Microsoft Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2003 and Windows 2008
Requirements: Mac OS X 10.5.X and above (including Leopard, Snow Leopard, Lion, Mountain Lion and Mavericks)
In order to avoid data loss due to power outages, a simple safeguard like Uninterruptible Power Supplies (UPS) is very important. Power fluctuations can also be eliminated or removed by using UPS. While deleting files using “Shift+Del” keys, make sure that the files you are deleting is not needed further or delete it by using Windows explorer so that you can restore it from Recycle Bin.This software can also perform formatted hard drive recovery and also reformatted hard drive recovery in an easy way. If you have accidentally emptied or deleted files from Recycle Bin then make use of drive recovery software to restore deleted files. The software helps you to recover files from different types of storage devices such as internal hard drives, external hard drives, USB drives, flash memory cards etc. This tool is capable of recovering data that has been lost due to accidental deletion, improper system shutdown, abrupt power outages, file system corruption, virus attack etc. Drive recovery software can restore files from hard disk lost or deleted while changing file system from FAT to NTFS or vice versa and supports recovery on latest versions of Windows Operating System. If you want to undelete files on Mac Operating System then use Mac hard drive data recovery tool which does this at your fingertips.
Steps to recover lost files from External USB drive:
Step 1: Download and install Drive Recovery tool to retrieve data from External USB drive and then launch the software
Step 2:The new window is appeared. Select “Recover Files” option among the 3 options to retrieve External USB drive files as shown in Figure 1
Figure 1: Main screen
Step 3: Select “Deleted Files” option or “Lost Files” option from the next window to restore data from external USB drive that has been deleted or lost as shown in Figure 2
Figure 2: retrieve deleted or lost files from external USB drive
Step 4: A window is displayed with the list of connected storage devices like hard drives, memory cards, USB drives etc. Select External USB drive and click on “Next” button to retrieve files from external USB drives as shown in Figure 3
Figure 3: Select the External USB drive
Step 5: Now, View files that are recovered from external USB drive using “Preview” option as shown in Figure 4
Figure 4: View recovered files to estimate recovery results