I have a new external USB drive. I have ran Apple Disk Utlity but it cannot repair the drive. There are no unusal noises coming from the drive. All I get is a blinking light. I have a WD 1TB My Passport for Mac external USB drive that no longer mounts. My Passport Drive - blinking light, will not mount.Boot from your OS X Installer Disc. I then starting memory testing by taking all third party memory out and then starting the MacPro up good and then adding memory one module by module at a time (in a Mac Pro matched pair. So after a SMC Reset the Mac pro would not fully start and gave me the dreaded 3 blinking power light. If you have installed any WD software on your computer be sure to remove it completely.My 2008 Mac Pro (in my Signature) decided not to wake. And many more programsWiFi File Transfer Pro is a light-weight web server that.Completely repartition the drive and reformat.
Blinking Light On My Passport Mac External USBSMART info will not be reported on external drives. If it does not say "Verified" then the drive is failing or has failed and will need replacing. Note the SMART status of the drive in DU's status area. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. If you are preparing an external or a non-startup drive, then open Disk Utility in your Utilities folder.2. When the menu bar appears select Disk Utility from the Utilities menu.Western Digital’s My Passport For Mac is a solid, compact, comparatively speedy little USB-only portable hard drive that also happens to be Time Machineready and designed for the Mac. There is no such thing as a "MAC HD" or a "PC HD", all HD are just blank bricks and formatted for either PC or Mac or for both (ExFat). The format process can take up to several hours depending upon the drive size.Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.You stated- "It was connecting until the other day" (to the Mac)What you and most people dont understand (logically I see why) is that it makes "no logical sense that it will mount on ONE machine and not another" (however as per your mention it would be a minor power variance to the SATA card as different slightly between the Mac and PC)However this bizarre behavior is actually typical for a dying SATA bridge card, they produce 4 extremely counter-intuitive diagnostic issues (as mentioned in the LINK).(this is why SATA bridge issues are often called 'haunted hard drive syndrome', due to illogical behavior)On a side note, the "WD for Mac" doesnt mean anything.The drive is just marketed that way. Click on the Erase button. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.6. You can use this format if you routinely share a drive with multiple Windows systems.HFS+ ((((MAC FORMAT)))) (Hierarchical File System, a.k.a. AirPort Extreme (802.11n) and Time Capsule do not support NTFS Native NTFS support can be enabled in Snow Leopard and Lion, but is not advisable, due to instability. For Mac OS X 10.4 or later (32 or 64-bit), install Paragon (approx $20) (Best Choice for Lion) To Read/Write/Format NTFS from Mac OS X, here are some alternatives: You can use this format if you share the drive between Mac OS X and Windows computers and have no files larger than 4GB. You can use this format if you only use the drive with Mac OS X, or use it for backups of your Mac OS X internal drive, or if you only share it with one Windows PC (with MacDrive installed on the PC) To Read HFS+ (but not Write) from Windows, Install HFSExplorer Required for Time Machine or Carbon Copy Cloner or SuperDuper! backups of Mac internal hard drive. Unless you had something like Paragon's little-known HFS+ for WindowsVerify its format on your PC (as you say it will mount to same).Ultimately HD are cheap as dirt, and you should consider ASAP to salvage data from the HD (which could be dying.however more likely the SATA card).Worse case scenario is you have a dying HD and you buy a $65 new 1TB drive and reload the salvaged data from your WD Passport HD⚠ Hard drives suffer from high rates of what has been termed "infant mortality". See "disadvantages" for details.If that were the case it wouldnt show up on a PC. You can use this format if it is supported by all computers with which you intend to share the drive. AirPort Extreme (802.11n) and Time Capsule do not support exFAT Not all Windows versions support exFAT. Credit wizard v1 1This is because of very minor manufacturing defects or HD platter balancing, or head and armature geometry being less than perfect and this is not immediately obvious and can quickly manifest itself once the drive is put to work.Hard drives that survive the first few months of use without failing are likely to remain healthy for a number of years.➕ Generally HD are highly prone to death or corruption for a few months, then work fine for a few years, then spike in mortality starting at 3-4 years and certainly should be considered end-of-life at 5-7+ years.After searching the web for hours and trying everything I finally found the answer to this.I have a MAC Book Pro and also have the WD Passport, it was working just the other day and now it wasn't.I could hear it working and see the white light on but it was NOT showing up in devices but WAS showing up in disc utility.With my WD Passport plugged in I went to Click on the WD Passport (in My case it said 1TB WD My Passport) at the left hand side so it's highlightedThen click on FIRST AID in the middle sectionThen at the bottom right hand side click on VERIFY DISCThis gave me some errors that needed to be fixed, and then I clicked on REPAIR DISC and in a few minutes it was fixed.Now, I don't know if this was a problem for you, but when I clicked below the 1TB WD My Passport where I named my passport "Modella2014" (you will have a different name obviously) in the bottom section it said MOUNT POINT "not mounted"So I went back up to "Modella2014" and right clicked (on the mac track pad that's a 2 finger click) and selected "Mount Modella2014" and in a few seconds that was mounted.Hope this helps, feel free to share and save someone else the 4 hours it took me to figure this out.
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