My Macbook Pro mid 2012 is not reading/connecting to my (working)external hard disk(also not showing in disk utility)

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Level 1

36 points

My Macbook Pro mid 2012 is not reading/connecting to my (working)external hard disk(also not showing in disk utility)

I connected my 500GB Storjet external hard drive to my mac(Mountain Lion) http://in.transcend-info.com/products/Catlist.asp?modno=325 but it is not connecting to it. Disk Utility is also not showing it. and the hard disk is working... My PS3, My Sony TV and my other laptop(win7) is detecting it... Also whenever it gets connected a blue light blinks, but It doesnt for mac. I have tried reformatting to both FAT32 and NTFS... Please help..

Also I sorta screwed my Mac so I had to do the internet recovery thing and only after that such problems occured, it was working fine before. So it installed Lion first and then Mountain Lion. It wasn't working on any of the OS.

MacBook Pro (15-inch, Mid 2012), OS X Mountain Lion (10.8.3)

Posted on Mar 22, 2013 10:28 AM

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Answer 1

sahilkhanna Author

Level 1

36 points

Mar 23, 2013 11:34 AM in response to sahilkhanna

any help?

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Answer 2

Shootist007

Level 6

16,703 points

Mar 23, 2013 11:55 AM in response to sahilkhanna

Is this a USB powered drive, No external AC adapter?

If so you need a Y USB cable to connect it to both USB ports at the same time to supply enough power to it.

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Answer 3

sahilkhanna Author

Level 1

36 points

Mar 23, 2013 11:59 AM in response to sahilkhanna

It doesn't require any external AC power source. It already comes with a Y USB cable and I have tried attaching both of it but in vain.

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Answer 4

Shootist007

Level 6

16,703 points

Mar 23, 2013 12:03 PM in response to sahilkhanna

Power down the Mac, Full power off. Connect the drive using the Y cable and then turn the Mac back on.

If it still doesn't show in at least Disk Utility then start checking your USB ports to see if both are working properly. Just plug in a USB thumb drive and that should show in both Finder and Disk Utility. If one of the ports isn't seeing the thumb drive then that port is bad and the system needs to be services by Apple.

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Answer 5

sahilkhanna Author

Level 1

36 points

Mar 23, 2013 12:10 PM in response to sahilkhanna

Power down as in shutting down or draining the whole battery?

and I checked both of the ports and they are working fine with other thumb drives.

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Answer 6

Shootist007

Level 6

16,703 points

Mar 23, 2013 12:11 PM in response to sahilkhanna

Shutting down.

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Answer 7

Shootist007

Level 6

16,703 points

Mar 23, 2013 12:13 PM in response to sahilkhanna

Then for whatever reason your Mac either doesn't like that drive or it isn't supplying enough power to it even when using the Y cable.

Could be the Y cable is faulty? Only way to check that is to use a different Y USB cable.

Are there any USB HUBs connected to the system?

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Answer 8

sahilkhanna Author

Level 1

36 points

Mar 23, 2013 12:18 PM in response to sahilkhanna

I just used my friend's HDD USB Y cable wih mine and it doesn't seems to work either, although his HDD is working fine... and Nope, no other USB devices are attached... BTW Thanks for your time.

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Answer 9

sahilkhanna Author

Level 1

36 points

Mar 26, 2013 9:50 AM in response to sahilkhanna

BUMP

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