The WD My Passport unit is sold as a USB3 external drive, said also to be 'compatible with USB2'. Now, the 5 VDC supply of power from a USB2 port is limited to 0.5 amps max, but USB3 increased that limit to 0.9 amps. 500gb WD My Passport suddenly not recognized, won't reformat,says 2TB in Disk Utility. Discussion in 'Mac Basics and Help' started by jennifer3241, Mar 16, 2010.

WD My Passport Not Recognized on Mac ' I have a WD My Passport external which is not recognized on Mac, but I have stored many files on this external HDD. So can anybody tell me how to recover data from an unreadable external hard drive for Mac?

I have some important excel files on this external, so I would appreciate it very much if anybody can recommend useful.' WD My Passport external hard drive is able to work on Mac and Windows PC for data transferring or backup.

If a WD My Passport by Mac OS, you had better make it clear if the problem is caused by external HDD error or Mac OS crash. You can connect the WD My Passport to another computer to see if it can work normally. Once you are sure that the WD My Passport is corrupted and becomes inaccessible, you had better stop performing any further operation to this external and then you can use data recovery software to get back lost data. Data Recovery When WD My Passport Is Not Readable on Mac For an unreadable external hard drive data recovery, you need to rely on a professional data recovery program. Is a good solution for data recovery from any storage media including WD My Passport when it is not detected by Mac OS or other PC. You just need to plug the external to a PC, and this data recovery software will deep scan the external even if it cannot work normally. Cd drive for mac not working. ICare Data Recovery is a read-only program which is compatible with Windows OS, so you should plug your external to a Windows PC in order to retrieve all lost data when the WD My Passport is not recognized on Mac.

Now, you can follow the steps below to recover unreadable data: Step1. Download and install iCare Data Recovery on Windows PC. Run the software and choose a proper scan mode. Select the WD My Passport external and then wait the software to scan it.

When scanning is completed, you can preview found files and then save the lost data to another drive. Possible Reasons Why WD My Passport Does Not Work on Mac Everybody knows that the most important thing is to restore all lost data when a WD My Passport drive is not recognized on Mac, but many people still like to know the reasons why an external hard drive stops working on Mac. Here are some possible reasons: • WD My Passport external contains too many bad sectors • The WD My Passport is infected with virus or Trojan • WD My Passport portable HDD file system is corrupted • WD my passport external hard disk is formatted wrong or needs updated drivers • More other reasons Solution When WD My Passport Is Not Recognized due to Incompatibility issue An external hard drive might not show up on a computer when it is formatted improperly.