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New MBP not recognizing external drive (other machines do)

(5 posts)
  • Started 2 years ago by thebonafortuna
  • Latest reply from thebonafortuna
  • Topic Viewed 1530 times

thebonafortuna
thebonafortuna
Posts: 105

Hi all,

Looking for some advice. My new Macbook Pro (late 2011, running Lion) won't recognize my external hard drive. The drive is an ioSafe "rugged portable", which runs off USB (and doesn't plug into the wall). It has a capacity of 750GB, and I would like to use as a Time Machine for backing up.

The drive works fine, and I've run numerous diagnostics when connected to an old ThinkPad. However, whenever I connect to my MBP, the drive just makes a spinning noise and gives no indication of being read by the machine. It does not appear in Disk Utility or in System Profiler.

I spent last night reformatting on the PC, and it shows as a blank drive on my ThinkPad. This morning, it still wouldn't read on the MBP. I did some research and it sounds like others have had a similar problem recently, so on a whim I brought it over to my old iMac, which is still running Snow Leopard. The iMac recognized the drive immediately, and prompted to use as a Time Machine.

I formatted the drive on the iMac to use the recommended Apple system (journaled), although for some reason it made me partition it into two. But it worked and is recognized by the iMac. Brought it over to the MBP, and it still will not recognize.

I've tried both USB ports, neither seems to work. Each works with other types of peripherals and other external hard drives. But if you read up on the "rugged portable", you'll understand why I want to use that as my primary backup.

- Is this an issue with my MBP, or an issue with Lion?
- Is there a method to resolve the issue?

Thank you in advance!

*Worth noting, I also ran diagnostics on the ioSafe from the working iMac, and everything checked out.

Posted 2 years ago
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hatryst
hatryst
Posts: 3482

Hi, welcome. I don't have much experience, regarding this, but could it be possible that the external hard drive requires extra power from the USB, and the MBP isn't giving it that much power?

You can get support from both sides, iosafe, and Apple. Do you have an Apple store nearby?

Posted 2 years ago
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thebonafortuna
thebonafortuna
Posts: 105

Hi hatryst, I've wondered about that myself. The drive is designed to be run on minimal power, and it works running on an old T60p from 2007...so I would assume a brand new, crazy expensive MBP would be able to power it. I've looked around for specs on that, but am not sure how to check. Also, that same USB port is enough to power an iPad (and charge it).

I do have an Apple store nearby, but consider that a last resort. I figure it's either that (the lack of power), or there is something in Lion that is messing with it.

Posted 2 years ago
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hatryst
hatryst
Posts: 3482

Did it come with a 'Formatted for Windows and OS X' label?

Posted 2 years ago
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thebonafortuna
thebonafortuna
Posts: 105

Yes, and the ioSafe website provides instructions on how to format for Apple OS (it comes natively supporting NTFS) - see here: http://iosafe.com/faq-rugged-portable

I followed the instructions on the iMac machine (as the MBP doesn't recognize the drive), and formatted with the OSX system ("Journaled", or something like that). It recognizes as such on the the iMac, just not on the MBP.

Posted 2 years ago
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