HD not readable, wrong capacity

WD External Drives External Drives for Mac
1

Hi everyone from not a macbook guru :(,

My passport essential (wdmew2500te) after a light fall is not recognizable by my macbook (1st image). The Disk Utility sees it but states for it a wrong capacity size, 2 TB instead of 250 GB (2nd image). Why is that? What can I do? The selection “repair disk” and the others in the Utility are not available and I can’t see the disk in Finder neither… What’s going on?? I tried using another cable but it didn’t work. I also downloaded the drivers WD+TURBO_Installer_v_1_1_0 but nothing… HELP!

Thanks in advance

Natasa

1st image

27iBD6D247340E3830E

2nd image

28iD556E3BDC388C44F
28iD556E3BDC388C44F740×613 73.8 KB

2

That issue usually caused by corrupted firmware.

Try download the new firmware and update it.

http://www.wdc.com/wdproducts/updates/?family=wdsmartwareutilities

You need to update it from a PC windows machine.

3

Your drive may have a stiction fault. Stiction occurs when the heads land on a smooth section of the platters instead of their normal landing zone, or load/unload ramp.

See http://en.wikipedia.org/wiki/Stiction#Hard_disk_drives
Stiction forces can often be overcome with gentle “percussive maintenance”.

This thread may interest you (it has a couple of success stories):
http://forum.hddguru.com/samsung-portable-500gb-dead-t14351.html#p99445

See the warnings on page 5 of the following article.

Disk Drive Science (Steve Legg):
http://eprints.soton.ac.uk/7803/5/DiskDriveScience_copy.pdf

Your computer is probably detecting the USB-SATA bridge chip inside the enclosure rather than the drive itself. That’s possibly the reason the nonsensical capacity report.