LaCie 4TB Biggest Quadra U SATA II Hard Drive - Answered Questions & Fixed issues

Could be defective. Try swapping power cord and usb cable with know good ones. You could also plug it into a different (known working) usb port. Good Luck

You don't mention which operating system you're on, and reformat instructions are specific to the OS. Also, I assume the OS is installed elsewhere, on another primary drive. If your OS is on this hard drive it's whole different kettle of fish.
It sounds like there is some corruption in your files, and the drive wants you to essentially erase them clean so it can clear up the mess and start anew. That is what is meant by reformat.
Please go to this link and attempt to follow the LaCie instructions to "Fix volume corruption"
http://www.lacie.com/support/support_manifest.htm?id=10244&article=search
If you have trouble with this, or don't understand how to go about data recovery, you will need to learn how to backup the entire content of the drive before reformatting it. In that case, I recommend you consider using a full image backup utility like Acronis True Image http://www.acronis.com/ or Symantec Ghost.
If you have current backups of the data stored on this drive, and understand how to work with them to restore the information to your hard drive, you can safely proceed with the reformat.
If this answers your question, please take a moment to rate this post. And by all means, if you're not certain about how to proceed, write back and I'll be happy to point you to some tutorials that can guide you through the process.

1. Disconnect all cables from the device.
2. Press and hold the "reset" button (located on the rear panel) for about 10 seconds.
3. Wait for the device to restart and initialize. This may take several minutes.
4. Reconnect the cables to the device and try accessing it again.

Note: It's recommended to backup all data stored on the device before performing a factory reset, as all data will be lost during the reset process.

Please check the link https://www.youtube.com/watch?v=VrhHzRDaXik

Depending on your OS, use your disc utility and see if it has been initialised or not. If not initialise it and then you can format and use it as normal.

Check the data recovery programme used for an idea or start again now you have your data back by re initialising and formatting the drive as a new one.

Did you get it fix ? Have the same drive and forget the password!! Need help

U should test for power at the connector that goes into the lacie with a voltmeter to make sure power supply and its wire are OK. If no voltmeter then use a automobile brake or turn signal bulb to see if it has power.

Just an idea. When you set pass words or any important information write all information in a note book and keep it in a drawer someplace where you will not lose it. When things change write the new ones down and cross out the old ones. I save a lot of head aches that way.

Pushing in the paperclip should unlock it, but if still jammed, may have to wreck drive by pulling off front of drive drawer thing. Maybe try putty knife to push cd down some of that's holding it from opening.

Replace perhaps, but repair is most difficult. The electronics are miniature and it takes special tools to do repairs.

Two ways this can go. If you are talking about the entire hard drive pulling it out and plugging the whole drive into another pc. Then you're fine If you are talking about disassembling the hard drive and moving the disks inside. This is not something you can do. This is what you will need. 1) a certified clean room surgical grade 2) tape 3) A matching drive/ hd board down to revision number 4) presision screw tools. 5) patience. Or you will need to contact a professional data recover company.

Dopo aver visitato il sito web qui sotto, traduci le istruzioni in italiano. http://knowledge.lacie.com/articles/en_US/FAQ/007280en?language=en_US&key=ka030000000tpdkAAA&kb=n&wwwlocale=en-as

Here is the user manual for your device: https://www.lacie.com/files/lacie-content/manual/d2_dl_dvd_toast7_en.pdf

WCN https://msdn.microsoft.com/en-us/library/windows/desktop/ee844574(v=vs.85).aspx https://www.youtube.com/watch?v=J_g-XiLByM8

Hi please explain more information about your problem. before any further assistance try to check it on other computers and see if its working or not if yes then take a full backup quickly, if not then: try replace the USB/SATA/PATA cable and check if it is working or not. if yes then take a full backup quickly, if not then: 1-this is an external drive: 1-1: it use as a normal external HDD for backing up data/movie/music/pics/etc.: option number 1:try to fix its partition clusters/sectors with some software like easeus partition recovery or ... option number 2:try to format it and then recover its data via recovery applications like easeus or "get data ntfs back" or... note: in all scenarios you may lost some files or content 1-2 it is used for speed up your computer or has the MBR or EFI boot partition and has an OS installed on it: try to fix its partition clusters/sectors with some softwares like easeus partition recovery or ... note: in all scenarios you may lost some files or content 2-this is an internal drive: 1-change the SATA/PATA cable 2-check its sectors or clusters via software (windows check disk or windows defragment option) for bad sectors or cluster issues 3-try to fix its partition clusters/sectors with some software like easeus partition recovery or ... if none of my solution works or software found some bad sectors that could not resolve it then or even you couldn't format the drive then: maybe it has a hardware fault and there is not much you can do about it by yourself and you should go for warranty service or replacement or asking some expert companies for recovering your data via some special hardware that it may cost you too much. best regards

How old is the drive and has your set-up always behaved exactly the same way or what's different now, please? Does this happen only with Word files or what? Is that LaCie's own Disk Utilities, or what Mac OS are you using which pluralizes that?

you can try a new lead or power supply. If it is internal just buy another monitor as not a DIY repair

try using "USB SHOW" install the software.
Note. Must be original software.

I'd suggest to try the device on a different PC. If the issue persists the problem is obviously with the drive itself.