Upgrade/Replace System Disk

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  • Add Date: 2014-03-24 23:18:09  Update Date:2017-11-06 04:41:27

This article applies to:
All EaseUS Todo Backup editions


It’s a common job to replace the hard drive where Windows exists. This may be resulted from a failing drive or requirement for larger disk capacity. Disk Clone option in EaseUS Todo Backup can deal with the job easily. By reading this article, user will get tips need to be noted during a clone operation, and how to troubleshoot possible issues.


Run a clone

Clone wizard entry can be easily find in home page of this product, and it is a simple 3 steps procedure.

1. Decide the source drive and destination drive for the clone. Tick the option Optimize for SSD if a SSD is selected as the destination, and enable Sector by sector clone will transfer all sectors to destination drive, even the blank sectors without any data included. So sector level clone requires a destination drive in equal or larger size.


Please be careful to select destination drive especially when you have 3 or more hard drives connected at the same time, as all content on that drive will be lost after the clone.

If an error message ‘the sector size of destination disk and source disk is inconsistent’ appears right after click Next in this step, here is an explanation why it happens.

2. Preview how the destination drive looks like after clone with version 6.X . For a non-sector level clone, partition size on destination drive can be modified before clone actually starts.


Since version 7.0, there is another way to modify the target drive layout. You will find the Edit button after decide which is the target drive.



All Windows drive letter is unique to the others, so the copy of system partition on destination hard drive will be not assigned C until you boot from the new drive.

3. Our product execute the clone with a progress bar indicating that how many times still requires to finish the job roughly, and some necessary info about the clone will be printed under the progress bar at the same time.  


4. Two copies of identical boot info may confuse Windows load procedure, so it is necessary to remove source drive before destination drive is specified in the first boot order.

Please do not connect destination drive via USB port, Windows load info cannot be transferred correctly in this way sometimes.

User needs to put target drive in the first location of the boot order if it is required to boot from target drive after the clone.

Cases where backup/restoring is recommended

Disk Clone is not always at the beginning of the queue to complete a system drive replacement job. If user has one of the following situations below, backup/recovery process should be considered first.

1. To transfer system to another machine with dissimilar hardware. Recover to dissimilar hardware is required here.
2. To transfer system from a none-RAID to a RAID device. Recover to dissimilar hardware is required too.
3. Only one internal hard drive is allowed to connected at the same time. Then it is better to transfer system with backup/recovery, and an external drive is required to save image file in this case.
4. It is also worth to try backup/recovery when fail to load from clone destination hard drive after reading all tips above.


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