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My cord that attaches to the computer to the lacie drive is loose and will not fire up. I need all the data that is on this drive and need to know how i can get this looked at or fixed. i appreciate your help, as soon as possible as all of my data is on this and I cannot work until i can retrieve my information. Thank you very much. Eileen

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Buy a new cord for it at radio shack or

Posted on Oct 06, 2008


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My Lacie 300794U suddenly blinks with a blue light but does not link up. Replaced power cord but still does the same thing.

disk drive p/s are very touchy. find the exact specs for the input for that drive. power adapters are within a general range and tolerance. you cannot mix any computer 5 volt adaptor. I took mine to a computer store, a small family shop and tied a toshiba 5v adaptor. and worked perfect. from the picture it appears that you are using an a/c 110v to d/c 5v adaptor. it it wirks intermittently then you may have a break at the bend in the cord, if it flucuates the adaptor interfaces may have a bad connection inside the drive box. if your handy open the lid and make sure the 5v connecter has the +5 red and gnd black haven`t come loose..the sneaky way is to go to best buy and purchase the exact same model and try the power supply, if successful you recover all the data and return the new unit. but you still don`t have a drive, or keep the new one and format the old drive
throw out the old adaptor and now you have 2 drives with one plug in. you can use the older formatted one to store partition image, and the new one for eveyday.. remember voltage in electronics kills ie. 13-14v will burn the drive, current is ok 1-3 amps no problem because this is what the drive can draw as required..THIS IS ONLYFOR D/C never use a variable voltage adapter like from radio shack, somtimes you set at 12v d/c and my multimeter reads 14-15
which will set on fire most electronics, portable radio etc.
I don`t know if you a computer or electronics background so I tried to cover my bases, hope this helps

May 21, 2015 | LaCie 300794u Big Disk Extreme Usb...

1 Answer

Need all of the cords for this external hard drive

Try contact customer support and the technical department for further assistance in hopes they can provide the cords. take a shoot at Type make and model and scroll through the list.

Jun 17, 2012 | LaCie (300728U) 250 GB Hard Drive

1 Answer



I recommend attaching your Lacie drive to another computer to see if you get the same error. If so, then the drive itself may have become corrupt or the connection interface gone bad. Don't be to alarmed as your data may still be recovered. If your Lacie drive is clicking loudly or a lot then that is a sign of imminent failure and you should seek to recover your data either through professional data recovery services $$$ or try the Data Recovery Wizard from

However, if you don't get the same results then run the CHKDSK utility to scan your drive for potential errors. Complete the following:

(1) Note the drive letter {DL} of the Lacie drive
(2) Goto to Start => Run and type CMD.exe <press enter>
(3) At C:\> prompt type CHKDSK {DL}: /R /X <press enter>
(4) Allow CHKDSK to complete and note errors if any. To many errors are not a good sign for your drive.
(5) Connect your Lacie drive back to the original computer on a different USB (or other type) port if the original port does not work and reboot.

The drive should now work.

Let me know if this helps any, good luck....

Mar 19, 2010 | LaCie (300770) 250 GB Hard Drive

1 Answer

I have a Lacie external HD 500G which we installed approx. one year ago. It was working great . However recently the mother board in our computer failed and was replaced with a new m-board. Essentially we...

Kevin, Yes you will loose al data if you format it.DO NOT FORMAT as you have your data on it. What I suggest is to get the motherboard of same old model that you replaced. Sometimes the motherboards do not play up with all the hardware. Get the same model motherboard that you replaced. Once that works, copy all data to some other HDD. Or better still send the data in bits by email to yourself. The data would be safe on the email server. And can be retrieved later when all is well. OR attach the drive to some other computer where it works and send emails to yourself. Long and tedious job, but will save your data. And when the drive has started working with your new computer after formatting or otherwise, you can retrieve all the data. and delete the emails from the server.

Nov 16, 2009 | LaCie External USB 2.0 500GB 7200 RPM 500...

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First time trying and i cannot access my data. This is the first time I tried to pull it up.

USB is very finnicky. Shut off your computer and external drive. Unplug the USB cord from one end (which ever is easiest). Turn on your computer. When windows is up, plug in USB cable. Turn on USB drive. Windows should recognize the USB ox and drive and attach the extra drives. But, you must have windows millenium or newer. Or you will need USB drivers for the external USB box.

May 27, 2009 | LaCie External USB 2.0 500GB 7200 RPM 500...

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"The disk LaCie was not repairable by this computer. It is being made available to you with limited functionality. You must back up your data and reformat the **** as soon as possible. Am using it as

I had a similar problem with two LaCie external hard drives.
LaCie doesn't manufacture hard drives, they only purchase drives from other companies, like Seagate, and mount those drives in LaCie external enclosures.
If the drive is nearing the point of total failure, then your Mac is letting you know that point is very close. You had better find a new backup device to use. The Mac will let you access the drive for a while longer, but if you do not act, there will come a point when the Mac will not be able to read the data on the drive and any backups you have there will be lost.
When you get a new external hard drive to use for backup, you may not need to do anything with the current drive that is failing, as long as you do not anticipate that you will need anything from the backups that it contains. You can set up the new device as your primary backup. I would then advise that you perform a total backup on the new device ASAP, so that you are not left without at least one good backup.

Sep 27, 2017 | LaCie (300740) 160 GB Hard Drive

2 Answers

Macintosh computer not recognizing the LaCie external hard drive

1. If you have another firewire device test this device with the same firewire cord you are currently useing for the LaCie. (if there is no reasponse form the other device then it is the cord it's self) If not then 2. Check the Leads on the back of the LaCie where the firewire plugs in if the copper looks tarnished use a ear swab dipped in Lime Away or CLR to clean it then wait for it to dry and try the cord again. 3. if these physical connections are in good connection with each other and the firewire in port on your computer and on the LaCie are good then. Run a "Permissions" verify and repair through the disk utility program on your Mac with the LaCie turned on and plugged in.
FINALLY if none of these options repair the LaCie you may have to open the LaCie up and check to make sure the soldering from the firewire to the chip set is still in tact. I hope this helps Happy Macing.

Mar 28, 2009 | LaCie Design by F. A. Porsche 160 GB Hard...

1 Answer

Having Problem with both LaCie hard drives being recognized on both macs

Try to connect to another computer, and see if it recognizes the drive. If Not, you can dismantle LaCie and take the disk out.

Connecto your disk to another external box (USB or Firewire) so you can have access to you data.

Jul 04, 2008 | LaCie (300740) 160 GB Hard Drive

1 Answer

Recognized - but no mount

Don't know about the MAC part, but an I/O error implies that the either the source file cannot be read or the destination drive will not write. This is usually an indicator of a bad HDD. To check, I would attempt to connect the external drive to another computer. If it still gives the same indication, contact the drive manufacturer about data recovery recommendations

May 29, 2008 | LaCie (300728U) 250 GB Hard Drive

2 Answers

I think I fried my LACIE 500gb drive

Sadly if you fried the drive with that PSU cord it would be pretty hard for a home repair. If you know its definatly dead, I would just remove the drive from the external unit and try to connect it internally to a computer. If the adaptor is different you could buy a cheapy online somewhere.

Jun 18, 2007 | LaCie (300740) 160 GB Hard Drive

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