

Whatever the issue is, it's causing the system to think the drive is read-only right now.

Simply follow the Setup Assistant through completion, then use your computer’s native disk utility (Disk Management for Windows or Disk Utility for Mac) to reformat your drive. The user manual and utilities will not be available on your drive and will have to be downloaded from the LaCie website: NOTE: Running LaCie Setup Assistant does not prevent you from using your computer’s native disk utility program to format or partition your LaCie drive. NOTE: If you do not launch LaCie Setup Assistant or if you quit LaCie Setup Assistant after the formatting has begun, your drive will not be ready to use and will require manual formatting. Mac users: Double-click the “LaCie Setup Assistant” icon on your desktop. A newer macOS wont advantage an older format on a very old drive no point in going there. repairs on the drive before and after Formatting. (High Sierra or before.) Anyway, to use Disk Utility and reformat the HDD to HFS+ should be very do-able. Windows users: Double-click the LaCie drive icon in My Computer/Computer. Use Disk Utility from the present system in your Mac. Copy the manual and utilities onto your drive.Optimize your drive according to your needs.Before using your drive, LaCie Setup Assistant software must be launched to format your drive.
