My 1 TB G Drive isn't mounting on my MacBook Pro

G-Technology G-DRIVE
1

Hi There,

I have an older G Drive mobile and use it with my MacBook Pro running Yosemite. When plugged in it no longer shows up as an attached device. The light is pulsing quickly and this is the case if I use the usb connector or the firewire connector. Please help. I know it’s older but I really haven’t used it that much.

Thanks in advance