Mac osx 10

SOURCE: bought a new LaCie drive; isn't recognized by mac or pc

Lacie Porsche drives in my experience or infamous for not having the most durable bridge boards. The bridge board is a chip that has a chipset on it which take the SATA or PATA connection and send it to the USB and or Firewire ports on the enclosure. If the drive is powered up, you should get a small red or orange light on the front. When connected to either mac or pc ( porsches are MS_DOS formatted out the box ), if it does not mount or does not appear in DISK UTILTY, then it is a high probability that the enclosure/bridge board has failed and the drive ( if not making grinding, buzzing, clicking or beeping sounds) will have to be extracted and placed into a more stable enclosure. Hope this helps.

SOURCE: lacie d2 external drive

I support the comments of (fire sine) I have the d2 120gb Lacie and it was down for two years.  I took it to my apple guys and they said that I needed to go to a data recovery service which would cost a gang of money.  Come to find out, when I decided to update my internal hard drive on my Mac Pro, I had to buy a SATA, IDE, USB 2.0 adapter to back up the internal and transfer to the new internal. Long story short, something said, Hey try and open the Lacie and bypass the board in the enclosure and connect directly to the Western Digital drive inside.  AND WHALA! I got my info, so all I need is a new enclosure.  

SOURCE: machine wil niet starten

I understand your problem but need the make and Model # to help you with the programming problem

SOURCE: USB external hard drive does not show up on OS X desktop

You need to be sure that it is formatted as a FAT32 drive and not as a NTFS. When you are in Vista right click on the drive icon and click on properties. You will see NFTS or FAT32 under file system. Your drive must be FAT32 to be recognized by a Mac. Iomega.com has a FAT32 formatting software that you can download for free on your Vista PC and re-format the drive as a FAT32 drive.

SOURCE: Lacie 320 GB Hard Drive acting as if full when it's not.

Simplest solution: back up the data on the drive and repartition it (which will wipe it). Otherwise it sounds like it could be a problem with the file tree or structure of the drive, the configuration files could be corrupt, some program could have stored temporary files in a hidden place that cannot be deleted without making the program delete them, etc. If you are on a mac, spotlight Disk Utility and use it to repartition. If you are on a PC use the search thing from the start menu and find a program called disk management (or something similar to that, you'll know it when you see it.) external drives are annoying. i kick mine into the wall periodically for good measure.