Page 1 of 1

WD20NMVW-11EDZS7 ROM LOST

Posted: 13.09.18, 22:55
by shahi
We got this case. Original ROM missing and no way to find out this one.

In this case, we tried different microcode+ldr but never able to access SA.

Do you have any idea?

Its Sherk_Lt

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 16.09.18, 13:04
by Amarbir[CDR-Labs]
Shahi,
Before you do this swap heads from ok drive then try atleast possibility of bad heads would not be there

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 16.09.18, 17:04
by GuideRecovery
Search a ROM of drive with close Seiral number with your and try, atleast you should reach to SA if heads are fine.

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 17.09.18, 10:03
by AJ2008
This will not work as these drives implement additional adaptive data for dual actuators in ROM module 4F - without original ROM it is not possible to restore access to data. I am sure a few guys at this forum know more about this than me and possibly have some solution, but I believe chances on this are very very low...

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 18.09.18, 19:41
by Paradog84
Dual actuators in this model drive?

Please explain....

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 18.09.18, 19:49
by Blizzard
Paradog84 wrote:Source of the post Dual actuators in this model drive?
Please explain....
Unlike the Seagate multi-actuator drives, Western Digital has developed dual-stage or multi-stage actuators. Here are details.

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 12.12.18, 21:59
by DataMedics
All hope is not lost. It is often possible to recover without the original ROM, but it requires a ROM code from a very closely matched drive. Usually one manufactured the same week will have a good chance of being close enough to work.

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 13.12.18, 22:19
by shahi
The case is still unsolved. Had no way to access. We tried to manage close hdd, but was unable to manage

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 17.12.18, 00:19
by DataMedics
Yustik wrote:Source of the post
DataMedics wrote:Source of the post All hope is not lost. It is often possible to recover without the original ROM, but it requires a ROM code from a very closely matched drive. Usually one manufactured the same week will have a good chance of being close enough to work.

but not only a firmware version is enough :-)


No, for a drive this new it's more than just the ROM version that must match. But, one manufactured close enough to it can often work. Finding a donor on the other hand isn't always possible. Last one like this I had I couldn't find a close enough donor, but I just tried every ROM in my resources and eventually found one that was close enough to work. It's tedious work, but it's usually possible to find something.

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 22.12.18, 21:22
by shahi
I am looking for close dated drive still... To get the best possible options for the case

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 23.12.18, 02:33
by Doomer
ShrekLT does not have dual actuators, but I must admit I mistakenly thought that important adaptives in 4F are dual-actuators related(they aren't) and even probably convinced some people of it.
Nevertheless the adaptives are important and w/o them drive won't read anything. They can be restored but it's a grueling process. There is no way to do it with PC3K.

Re: WD20NMVW-11EDZS7 ROM LOST

Posted: 23.12.18, 17:45
by Doomer
Yustik wrote:Source of the post
Doomer wrote:Source of the post There is no way to do it with PC3K.

there is no way to do it with ONLY pc3k :-)

Yes, that is more correct