I have a Seagate GoFlex 2TB external HDD that stopped working one month ago. The head of this external disk seeks continuously and produces sounds even when it is not connected to the USB port.
On OS X Yosemite 10.10.5 it takes about 5 minutes to detect its hardware and show its icon in Disk Utility or in
diskutil list. When my mac detects the hardware it shows Initialize/Ignore/Eject message and no more thing happens.
On Windows 7 it takes about 10 minuets (while the progress bar fills) to mount it. But it is very very slow on every operation. For example it takes 2 minutes to open a folder and so on.
If its partition is lost, why OS X cannot mount it? Is it a time out problem for OS X in mounting operation? How can i backup its contents with preserving folder structure faster?