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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Hitachi HDD Deco

September 25th, 2018, 22:45

Hi All

I got a bunch of this hdd from deco from Movistar, Claro companys.
I trying to use on my computer, computer detects him, i checked with HDD Sentinel, and it appears there.
But, i cant delete partition, or create new one.

I tried with MHDD but he says: Drive not ready. and something with LBA..

The drive is connected via USB, i booted with a usb stick with command.com,
So, i readed a little and, add to config.sys the driver to load usb.

But when i boot keep appears 1/2 loading device, and stuck on 2/2...

So, i take out the primary hdd from the laptop, and put this one has primary. but the laptop says that cant load or something cant remember.
So im stuck..

Can anyone guide me, step by step, any god soul?

Thanks

Re: Hitachi HDD Deco

September 29th, 2018, 7:10

Most likely your drives are locked to the media device either by ATA password or special lock.

You need to plug the drives to a spare system by ATA (SATA/IDE) and run something like Victoria/MHDD to check if the drive does report as locked with ATA password and if you can scan the user space - LBA.

If you can't scan the user space and/or if the drive is locked by ATA password you will need special firmware tools like very expensive PC-3000 to solve the issue and re-use the drive on a regular PC.

If you have small quantity of locked drives my services should be able to help if you do have regular standard drives - NOT SOLIDF STATE - FLASH :

https://www.ebay.com/itm/ATA-Password-U ... 2674077475

https://www.ebay.com/itm/Drive-ID-Passp ... 2674160463

Procedure will depend from brand to brand.

ALSO :

SOME DRIVES THAT ARE OPTIMIZED FOR DVR/MEDIA DEVICES WILL NOT BE RELIABLE ON REGULAR COMPUTERS.

SOME DVR DRIVES ARE OPTIMIZED FOR SPEED SO THEY MIGHT BE SET TO IGNOR SOME ERROR CORRECTION/CHECKINGS, ETC because on a dvr/video machine is more important to get the video saved fast even if you do loose some frames rather to have a 100% binary equal copy of the files when moving them arround.

If you re-use a DVR drive on a computer system you will risk to save files to the drive and by some reason / error / limitation get currupt files instead of having a correct copy of the files stored to the drive.

If you are storing video you can loose some frames and you will see the content but if you are storing something like a .exe file and the drive decide to disacard part of if .... you get the idea ...

Just don't use drives with firmare that are optimized for DVR with standard computer systems ...

Re: Hitachi HDD Deco

September 29th, 2018, 12:26

rushwhq wrote:SOME DVR DRIVES ARE OPTIMIZED FOR SPEED SO THEY MIGHT BE SET TO IGNOR SOME ERROR CORRECTION/CHECKINGS, ETC because on a dvr/video machine is more important to get the video saved fast even if you do loose some frames rather to have a 100% binary equal copy of the files when moving them arround.


Interesting clarification. Thanks for sharing.

Re: Hitachi HDD Deco

September 29th, 2018, 17:43

mhp666 wrote:
rushwhq wrote:SOME DVR DRIVES ARE OPTIMIZED FOR SPEED SO THEY MIGHT BE SET TO IGNOR SOME ERROR CORRECTION/CHECKINGS, ETC because on a dvr/video machine is more important to get the video saved fast even if you do loose some frames rather to have a 100% binary equal copy of the files when moving them arround.


Interesting clarification. Thanks for sharing.

This is not strictly true.

There is an additional ATA Streaming command set which is used for reading and writing uninterrupted data. These commands are only invoked when necessary. The normal read and write commands are still present as the default. In fact the latter are mandatory because an AV drive must still be able to write error-free file system information even though the AV content may have errors.

https://www.hgst.com/sites/default/files/resources/WP_AV_25March.pdf
https://www.seagate.com/files/www-content/product-content/sv35-fam/sv35.5/en-us/docs/video-vs-desktop-mb645-1-1403us.pdf

Re: Hitachi HDD Deco

October 2nd, 2018, 17:11

Thanks for the extra info !

Re: Hitachi HDD Deco

October 12th, 2018, 16:56

I read an article regarding that hypothetical issue about a year ago :
http://archive.techarp.com/showarticleb ... 659&pgno=4
And then an update saying that the former statements were actually wrong :
http://archive.techarp.com/showarticlef ... 826&pgno=0

Re: Hitachi HDD Deco

October 12th, 2018, 17:09

Thanks for the links.
They are very clear.
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