WD My Cloud Device cannot detect and shown red LED

My Cloud OS 3 Personal & Network Attached Storage My Cloud
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Hi, I had been using WD my cloud for serval years and suddenly my WD my cloud show Red LED and I cannot detect the drive and cannot access data. I tried to remove the HDD from the chassis and try to connect it directly to my computer but cannot detect the HDD. Anyone can advise the possible way to recover the data from WD Mycloud HDD?

Thank you in advance.

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@yelin

Don’t you have backups?

Backup Definition (techterms.com)

What Operating System is on your computer?

Support | Western Digital

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Unfortunately, my backup Lacie external HDD also has a problem (cannot detect). So, no more backup.

I used both Mac OS and Windows OS laptops. I used WD could personal to share files between my laptops, and mobile devices.

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The single bay/single drive My Cloud hard drive is formatted for Linux. One will need to use Linux (boot disc) or a Linux driver for Windows to access and read the EXT4 data partition on the hard drive. And because it’s a 3.5 inch hard drive one will need to use a powered USB to SATA adapter/docking station or a spare SATA port (with power connector) on their computer. Some additional discussion on how to access the extracted hard drive on Windows 10.

My Cloud dead, how to see content on Windows 10?
https://community.wd.com/t/my-cloud-dead-how-to-see-content-on-windows-10/175311

There are various programs for reading Linux EXT4 partition on Windows, here are a few:

Ext2Fsd: https://sourceforge.net/projects/ext2fsd/
Linux Reader: http://www.diskinternals.com/linux-reader/
Ext2explore: http://sourceforge.net/projects/ext2read/
Paragon Linux File Systems for Windows: https://www.paragon-software.com/home/linuxfs-windows/

Ubuntu is a popular Linux Distro one can use to create a Linux boot disc/flash drive to boot their computer into Linux:

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