I took backup from my original HDD, but you can download from links in this article. After you open the box and connect original hdd and new hdd to some linux machine you do the following.
My Original 1TB hdd was mounted as "sdb" under fedora
My New 400G hdd was mounted as "sdc" under fedora

1.) Backup original
dd if=/dev/sdb of=mbr.sdb bs=512 count=1
dd if=/dev/sdb of=boot.sdb bs=512 skip=1 count=12512 '(extract boot loader after mbr, and before 1st part. ~6MB is enough)
#get 3 sys part in bit2bit
dd if=/dev/sdb1 | bzip2 > sdb1.img.bz2
dd if=/dev/sdb2 | bzip2 > sdb2.img.bz2
dd if=/dev/sdb3 | bzip2 > sdb3.img.bz2
#extract partition table
sfdisk -d /dev/sdb | sed s/sdb/sdc/ > part.sdb

Now you have all data for new hdd (those files are also available in this article)
Fun part now (be carefull as with dd or sfdisk is very easy to mess up other system/data disks)
2.) restore mbr, boot loader
dd if=mbr.sdb of=/dev/sdc bs=512 count=1
dd if=boot.sdb of=/dev/sdc bs=512 count=12512 seek=1

#restore part table
3.)# edit part.sdb to modify size of the HDD (see below for description)
4.) overwrite partition of new hdd
sfdisk /dev/sdc <part.sdb

5.)restore partitions (to check your hdd you can cfdisk /dev/sdc or sfdisk -l /dev/sdc)
bzcat sdb1.img.bz2| dd of=/dev/sdc1
bzcat sdb2.img.bz2| dd of=/dev/sdc2
bzcat sdb3.img.bz2| dd of=/dev/sdc3

6.) create and activate raid disks (I suggest you disconnect your original hdd or do mdadm -S /dev/md1 (2,3,4)
mdadm -Cv /dev/md1 -l1 -n2 -c64 /dev/sdc1 missing
mdadm -Cv /dev/md2 -l1 -n2 -c64 /dev/sdc2 missing
mdadm -Cv /dev/md3 -l1 -n2 -c64 /dev/sdc3 missing
mdadm -Cv /dev/md4 -l1 -n2 -c64 /dev/sdc4 missing

7.) format md4 (data)
mkfs -L "Data" -j /dev/md4

8.) activate swap (not sure if needed but it doesn't hurt)
mkswap /dev/md2
swapon /dev/md2

9.) Optionally you can copy data from original disc (if you haven't disconnected it yet) (I have created 2 folders => mkdir /mnt/sdb; mkdir /mnt/md
mount -t ext3 /dev/sdb4 /mnt/sdb
mount /dev/md4 /mnt/md
rsync -av —progress /mnt/sdb/ /mnt/md/
umount /mnt/sdb
umount /mnt/md

10) Now tricky part
mdadm -Es

1. you should get result like

ARRAY /dev/md1 level=raid1 num-devices=2 UUID=38f61aa3:44d57f6e:371d16a4:c628cbe8
ARRAY /dev/md2 level=raid1 num-devices=2 UUID=d76e6d02:bbdc6d24:944ec00b:1ce3d3f3
ARRAY /dev/md3 level=raid1 num-devices=2 UUID=52c5fcaf:6e5975eb:7ef85dd8:b9eb2bec
ARRAY /dev/md4 level=raid1 num-devices=2 UUID=91c6bb94:a1f85a42:95e839e2:477a7ccc

1. you can replace those for lines in the file /etc/mdadm.conf but be carefull=>

mount /dev/md1 /mnt/md
nano /mnt/md/etc/mdadm.conf
#now replace 4 lines or only UUIDs

11.) This should do, you can now disconnect hdd and plug it in to your WD box and have fun :)

Detail explanation of
3.) when your hdd is different size than original you have to modify your partition table accordingly
do
sfdisk -l /dev/sdc

1. you will get something like

Disk /dev/sdc: 48641 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/sdc1 3 368 366 2939895 fd Linux raid autodetect
/dev/sdc2 369 381 13 104422+ fd Linux raid autodetect
/dev/sdc3 382 504 123 987997+ fd Linux raid autodetect
/dev/sdc4 505 121600 121096 972703620 fd Linux raid autodetect

#now take total number of cylinders (48641) minus starting point of last partiton (505) so
48641-505=48136 x 255 x 63 = 773304840 => this is the size of your last partition
=> edit your part.sdb and correct this last size ie
unit: sectors

/dev/sdc1 : start= 48195, size= 5879790, Id=fd
/dev/sdc2 : start= 5927985, size= 208845, Id=fd
/dev/sdc3 : start= 6136830, size= 1975995, Id=fd
/dev/sdc4 : start= 8112825, size=773304840, Id=fd

=> now you can replace your new HDD partition table (my number is for the WD 400GB) your number will be different

Good Luck

D

Thanks for this forum !! :-)

Booting is ok, lights will come up. But no response on LAN. Tried connecting to router/pc/dhcp/noDhcp, doesnt matter. 192.168.1.128 or mybookworld isnt accessible.

Somebody knows, what am I doing wrong?

tar cvpzf backup.tgz —exclude=/proc —exclude=/lost+found —exclude=/backup.tgz —exclude=/mnt —exclude=/sys /

as root makes a backup.tgz archive containing all files. Parameters meant for Ubunto but seems to work fine on my mybook: made me a 63MB file containing most files i will manage to fuck up.

Thanks for replying.
I did manage to get the device working, but these images did not help me.

And yes, that SDA was the correct drive ( i only had that drive connected at that time)

I did mange to restore the drive using an other MyBook World Edition. (a 500GB drive)
I used dd to copy the all the data of the working one to the 750GB and then resized the 500GB partition.
Its now fully working again!

But im looking at another problem:
When i did copy all of the data from one disk to another the 750GB drive got the same MAC-address like the 500GB, sow now i am only able to use them when using static IP adresses, and not all computers can find both the devices.

Does any 1 know how to change the MAC-address of a Mybook world.
I have SSH acces to this device.
Found some linux commands that would do the trick but i dont know : 1. does a single command without editing configuration files save these setting even after rebooting the device and 2. i dont know the name of the network adapter in this device , tried lan0 but that did not work.
Please help me to get this fix and im happy!

I think the correct device is likely to be sdb. To see your mounted file systems use mount, make sure you are actually specifying the correct device to dd to.

I am trying to get my MyBook World Edition 1, 750GB up and running again.

It lost all data on the drive.
The partitions i could get back using the method on this site.
But everytime i try: sudo bzip2 -cd SDA1_IMA.BZ2 | dd of=/dev/sda1
i get dd: opening ‘/dev/sda1’: Permission denied
what am i doing wrong?

I am running ubuntu 7.10 live session (booting with cd).
Even after a fresh reboot i get this message.
I tried unpacking but that did not work also.
On all partitions i get the same message!

Still downloading it, so not sure whether it's source (as it says) or if it contains an installer and firmware package.

You will have to manually setup the raid though, I dont have a WE II so I have never done it, but there are threads on people repairing it.

There is also the Debian Lenny (arm edition) that tends to work well, but is a little more time consuming, and you may want to build a serial adapter to have console.

-Much appreciated.

Sorry to ask again, can somebody make the image of the whole WD 500? it would make the whole procedure simple and the compressed image should not be larger than 100 MB

If it can not be made public I can provide ftp that it can be stored - just pm me for details.

Lukasz

I managed to work out all problems. Today i zero filled the drive and edited the manual step by step. It is finally working. All images are correct.
http://mybookworld.wikidot.com/forum/t-23918/recovering-original-fw-tested

It sounds to me like you did a file recovery without extracting the permissions.

Via shell can you change passwords using passwd?

- When IP is set up as static everytime I want to access the device by web interface it produces cache errors, each page must be reloaded
- There are some kind of problems with Mionet - when it is turned on device can not be accessed through the web interface (but shared directories are visible on lan)
- web interface produces message 500 Internal Server Error frequently
- password can not be modified - even if it is changed, after cold restart it returns to standard 123456

Anyone has a clue what can it be? If somebody knows where to get the really "clean" image of all small partitions? to get rid of this problems?

what you need is the mbr, ptable and disk images (really file is all you truely need)
We have had lots of success restoring we's the past few weeks.

3gb = 3221225472bytes
/512bytes = 6291456

dd if=sda_diskimage of=/dev/sda bs=512 count=6291456

however I prefer to pipe it to bzip2 to compress the image

dd if=sda_diskimage of=/dev/sda bs=512 count=6291456 | bzip2 > sda_image.bz2

but you will probably want to get each partition individually or just use the base ones I submitted from a clean system, with the mbr located at the bottom.

Lukasz

If you can give me the correct commands to create the first 3GB, I will try to create an image. I have several World Book shells and want to put 500GB drives inside and make them work like the 1TB version.

Anyway if somebody could make a exact bit by bit copy of the first 3 GB (gigabytes) which will contain all small partitions and post it somewhere it would be probably the best solution…
Lukasz

On http://mybookworld.wikidot.com/forum/t-23918/recovering-original-fw-tested in the comments there is a new rapidshare link to a working rescue.zip. The rescue.img it contains is only 3MB. I just finished testing with it and I get the LED's to light up but no activity on the NIC.

First erase the MBR
dd if=/dev/zero of=/dev/sda bs=512 count=1
Now create the partition talbes
sfdisk /dev/sda < SDA_PTAB
Use "installer" to modify MBR for bootloader
dd if=/dev/sda of=new_mbr bs=512 count=1
./installer new_mbr
dd if=new_mbr of=/dev/sda bs=512 count=1

Even with the new MBR the device will not function without the sectors between the MBR and the start of partition 1. This is were the stage1.bin and u-boot.img bootloader reside. I rebuilt the buildroot and stage1.bin and u-boot.img from the WD source and I can get the LED's on the front to light up. It doesn't dhcp or respond to the default IP "192.168.1.128" list in "/etc/default-setting". And none of the files on the drive seem to be touched. I don't have the serial cable (on the way) so I cann't see what is still failing. I think it has to do with u-boot. That were I've gotten so far

Right. Done so for the sda_mbr file. The link to that file is now also on the page. Enjoy.

-Cut Here——
#!/bin/bash
#Restores a hard drive to the original My Book World file system
HD=$1
if[ -z "$HD" ]; then
echo "./restore.sh <device>"
exit
fi
echo "Restoring the MBR"
dd if=SDA_MBR of=$HD bs=512 count=1
echo "Restoring the partition table"
sfdisk $HD < SDA_PTAB

echo "Restoring partition 1"
bzcat SDA1_IMA.BZ2 | dd of="$HD"1 & pid=$!
while (true); do { kill -USR1 $pid; sleep 1; }; done
echo "Restoring partition 2"
bzcat SDA2_IMA.BZ2 | dd of="$HD"2 & pid=$!
while (true); do { kill -USR1 $pid; sleep 1; }; done
echo "Restoring partition 4"
bzcat SDA4_IMA.BZ2 | dd of="$HD"4 & pid=$!
while (true); do { kill -USR1 $pid; sleep 1; }; done

#Temp fix
dd if=$HD of=mbr bs=512 count=1
./installer mbr
dd if=mbr of=$HD bs=512 count=1
-End cut-

I'm about to turn it off and see if there are any log messages, i'll let you know.

Lukasz

http://mybookworld.wikidot.com/forum/t-23918/recovering-original-fw-tested
Has a few files from the original archive + a large chunk of the front of the disk with a working mbr in it.

I am waiting for some free time to rewrite the instructions and include new files.
I will essentially wipe a world edition clean and rebuild from scratch with using the file only method instead of the disk images. (except the mbr and ptables)

I am planning on writing a bash script to rebuild it for you. (By using the file method, it should not be size dependent and should be quicker at restoring.)

Also the MBR in the other post, is a 100mb disk image (mostly empty space), it does not need to be this big.
The MBR bootsector is under 512 bytes. (really just a pointer to /boot or the bootloader wherever it is)

I will still need someone to test it on a bricked WE II (2 drives) to see how the raid is, or if someone has a new 2 drive system and is not afraid to open it, mount and rip the filesystems and mbr and ptables)
WARNING: only try to restore on a WB II if it is the last resource. I do not have one to test with and I don't want you making it worse with these files.

bzcat <file> | dd of=<dev> & pid=$!;while (true); do { clear; kill -USR1 $pid; sleep1; }; done

This will decompress and dd the image giving status output.

Until then, could you post your MBR and add a link to it in the wiki entry?

No match. I retrieved and verified this mbr twice, without any other disks attached to the system used. But the mbr from the archive can still be from a my book.

The one in the archive is:
2915da05007150c56eac34d93f110429 SDA_MBR

btw: there is a flaw in the tutorial. In the commandline for creating the SDA_MBR: hda => sda.

I have pictures I am going to put together in a tutorial.

Thanks for the effort!

Disclaimer
I have not tested that these work to restore a bricked system or if they will work on other sizes or the two disk version. So in essence, you screw it up by using any part of this… it's your fault, I take no blame. I would suggest you have Linux knowledge prior to using or attempting to use these. Of course, if you took the risk of hacking your MyBook World, then you should have already known this. I guestimate that these should be able to recreate a fresh out of the box MyBook World Edition. I am not your tech support, so don't try to contact me for it. Post to the forum, and if I can I will try to help.

Conversion Table from Mounted Drive to Actual WD FS

Files
- Master Boot Record -

• SDA_MBR

This was acquired by running "dd if=/dev/sda of=sda_mbr bs=512 count=1"
You would restore this by "dd if=sda_mbr of=/dev/sda bs=512 count=1"

- Partition Table -

• SDA_PTAB

This was acquired by running "sfdisk -d /dev/sda > sda_ptable"
You would restore this by "sfdisk /dev/sda < sda_ptable"

- BitByBit Disk Copies -
(These are exact copies of the partitions and will extract to be the partition size)

• SDA1_IMA.BZ2
• SDA2_IMA.BZ2
• SDA3_IMA.BZ2
• SDA4_IMA.BZ2

These were acquired by running "dd if=/dev/sda1 | bzip2 > sda1_image.bz2" on each partition where sda1 is sda1-sda4
You would restore this by "dd if=sda1_ima of=/dev/sda1", however since I piped them out as bzip2 files you will need to pipe in the std out of bzip into dd. I can't remember the command line options at this time.
WARNING: SDA4_IMA.BZ2 will extract to 461.89 GiB, as each file will extract to its original partition size.

- File System Dump Containing Permissions -
(These contain the file system for each partition while keeping full fs permissions)

• SDA1FILE.TAR.gz
• SDA3FILE.TAR.gz
• SDA4FILE.TAR.gz

This is acquired by mounting each partition as read-only as ext3 and tar/gzipping them with permissions. I can't quite remember which command options I did at the time.
You would restore these by mounting the partition and just extracting and writing over your files in your partition as root. You may need to delete other files you have created that are not in the archive, especially in your init.d.
You can also grab the files you may have corrupted individually as this is a copy of the files and structure. When mounting the FS you need to specify the type as ext3. Auto will detect the raid configuration and is unable to mount.

File Downloads
The files are packaged as 7Zip Archives, use 7-Zip or WinRar

Since I am not positive about storing these files and Western Digital's EULA, I posted them on rapidshare.

Please mirror and post here. Posting back to rapidshare is pointless unless you reencode them in another compression format, as once a file is deleted, so is it's hash.

This first link is probably the one everyone will probably use. It contains the file structures (with the files) with the mbr and partition table.

• SDA1FILE.TAR.gz
• SDA3FILE.TAR.gz
• SDA4FILE.TAR.gz
• SDA_MBR
• SDA_PTAB
• ReadMe.pdf
• ReadMe.txt

WD_MYBOOK_WE_500GB_FILE.7z (59MiB)

This link will probably not be used by many. It contains the raw disk images with the mbr and partition table.

• SDA1_IMA.BZ2
• SDA2_IMA.BZ2
• SDA3_IMA.BZ2
• SDA4_IMA.BZ2
• SDA_MBR
• SDA_PTAB
• ReadMe.pdf
• ReadMe.txt

WARNING: These expand to the 500GB, mostly of empty space.
WD_MYBOOK_WE_500GB_IMA.7z (57MiB)