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I have MBW running "Linux MyBookWorld #1 Thu Apr 1 16:43:58 CST 2010 armv5tejl GNU/Linux" currently.
I've read your instructions but if I mount /dev/md0 /boot is empty.

Is it possible to install Debian Jessie and if yes could you please help me with some step by step instruction to upgrade?


Hi folks,

I have an old Mybook world edition II NAS and im trying to get it working with my MAC book (exFAT), but i cant find it when i launch WD Access software on my MAC (i assume whatever Linux OS is running on drive is not compatible with current MAC OS).

The drive is visible in network places on MAC and XP, so working fine.

Ive also tried a windows XP VM, but when i launch WD access installer it says will only work with vista SP2. Grrrr :(

Ultimatley i want to reformat the drive completely and run EXfat file system, and hopefully be able to use the drive as a NAS and keep my MAC time machine backups on it. I suppose the first step here would be getting GUI / SSH access.

Any help much appreciated :)


Hi PotatoMasher,
Have you solved this problem??
Could you explain me how you did it?

I got the same issue with the "unknown host" trying to add the mac address after fixing my old blue ring MBW.


Whatever happened to the thread on OpenMediaVault?

I was really interested in this, as WD stopped updating the unit.

Can someone throw me a bone here?

edit: nevermind… fount it! :) Can't publish the link though…

My MBWE does not respond to ping. The blue lights are off but the ethernet leds light up. I removed the disk and connected it to a windows computer (USB2SATA) I can access the three partitions, not the 4rth (Linux Swap). The program I used is Linux reader (DiskInternals ). It reports that there is a damage to RAID array.All other data is accessible and have been saved to another disk. How can I be sure which one fails? The board or the disk?)

How can I be sure of what is the problem? My MyBook world single drive blue rings seems dead. Does not respond to ping. The disk seems OK. The tool I am using reports that there is a RAID damage and cannot access the 4rth partition (Linux Swap). I can access all the other.
So after all these, is the board damaged? Or Is it the disk that makes MyBook not to function?

Well, i tried it, but the motor of the Seagate 8TB isn't even spinning / starting in the MyBookLive Duo. Basiclly, any HDD except for Western Digital HDDs are dead in the Nas. Is there any way to fix this problem? Something like firmware downgrade or stuff like that?


i couldn't find anything, so i thought i could make a new thread. Please don't kill me if something like this thread is already existing.
I have a WD My Book Live Duo with 2 WD Red 2TB HDDs. I want to install new HDDs in the My Book, since i got the NAS from a friend for free because he dropped it, and the 2 HDDs are broken.
So my question is: Is it possible to install 2 Seagate Archive 8TB HDD in the NAS? Im working on it since 2 weeks and the Nas isnt booting.
The NAS is not broken. I tested it with a WD RED 2TB HDD, which was in my PC. Is it even possible to install None-Western-Digital HDDs in this NAS?

My book Live Duo by TrutVonHahnTrutVonHahn, 01 Sep 2016 17:53

It seems that I cannot access the disk. No ping, not visible in my network. Is it a disk error or a hardware problem? Can anyone advice me what to do?
I connected the disk to a laptop (WinVista). The data can be restored with Linux reader (DiskInternals)
I copied all my files to another disk.
When I try to open the 4 logical disks that are in the WD disk i manage to see the contents of the first three. On the 4rth there is an erro that sais:"Raid Array 2 (Raid 1 (Mirror))(LDM Device) is damaged. Recovery is possible
Can't open disk. Linux Swap"

The system cannot address a storage space larger than 2TB. No matter what you may wish, you may only use RAID 1 with disks larger than 1TB each.

Re: 2TB+ / MBR problem by YokozunaYokozuna, 13 Aug 2016 10:38

You're 90% there. Put your drives back in your box and start it up again.

Go look at <mybookworld . wikidot . com/upgrade-blue-ring-500gb-the-easy-way>. You will need to begin from step 10. Just make sure that any data stored in your undersized partition 4 is copied off, because it'll get clobbered by the process of resizing the partition.

Good luck.

Re: resize data partition by YokozunaYokozuna, 13 Aug 2016 10:32

The largest disk you can put into the device is 2TB. This is an addressable space limitation of the Operating System. If you put 1.5TB or 2TB disks into your two disk system, you must use Raid 1 (mirror) data storage on partition 4.

There are several tutorials here that can guide you in the upgrade process. Just choose the one that matches your technical skill level.

Re: Size HDD by YokozunaYokozuna, 13 Aug 2016 10:06

This is why it pays to keep reading deep into the forum history. Thank you for this command. WD factory configuration does not reserve that 5%, so I couldn't figure out why mke2fs did.

According to Sony, your player has an ethernet connection available. Why don't you use ethernet to connect your BDP client to your MBWE server?

Two different questions:

1) Did you replace both HDDs, or only one? If you replaced only one, you can only ever have a RAID of the smaller size. If you replaced both, go to question 2.

2) Did you follow the procedure specified in mybookworld(dot)wikidot(dot)com/upgrade-blue-ring-500gb-the-easy-way ? Halfway down is terrific guidance on how to rebuild your RAID to the new expanded size.

Without hacking, you are limited to WD brand replacement drives. This is because WD crafted the Operating System to only know the SMART parameters of WD brand drives. If you put in a different brand of HDD, the OS will not know how to read the HDD's internal temperature, and so will forcibly shut down your box after a few minutes in the belief that your non-WD HDD has overheated.

There are wiki articles here that address how to modify the temperature control utility to work with other brands of HDDs.

Re: Hard Drive Question by YokozunaYokozuna, 08 Aug 2016 02:17

Don't pull your hair out trying to get great performance out of this device. WD put a gigabit ethernet interface onto a slow processor with scant RAM and slow HDDs.

It's like putting Formula One racing tires on a Toyota Celica.

The structure of Partition 1 (BIOS) and the contents of Partition 2 (Operating System) are different between the Blue Light and White Light boxes. So it is not plug and play. If the HDD is truly healthy, you should be able to mount the HDD to a PC running Linux (or Windows with ext2fs installed) and read your stored data from Partition 4.

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