Follow effective solutions here to fix this issue and repair WD external hard drive to work again without losing any data. However, hard drives not working or showing up issue is so prone to happen even when you unplug the external SSD from the Mac and later on plug in the SSD again. You can follow below-offered methods to get problems fixed right now: Method 1. My Computer Caledon Ken. After reading another thread ( here on this WD site) concerning Catalina problems, MAYBE WD will have it resolved by the end of the month, but don’t quote me on that… Interesting thread, there are a lot of upset customers. Posts : 62. Don't use a blank password. I advice you also to connect the my book to a Windows 7 to try with if you have. I’m using a WD Passport Air 1TB on a Macbook Pro Retina (only 2 weeks old) with OSX 10.9.2 Mavericks. Here, you will find more information on how to erase the drive and unlock it. Will the new entire WD upgrade work with Mojave system? I have a WD passport that won’t open! Do not … If the drive can be mounted and accessed normally on the PC, then the problem is that the format of the drive is only for PC but not for Mac… Buy Now. Free Download . Install WD security and run the app. I’ve searched Google a couple times about WD Unlocker and there’s just not that much out there. There is another possible reason is that the format of your WD My Passport external drive is not compatible with Mac. Solution 1: Check Finder Preferences GoodSync for WD. Your WD Elements Drive Not Working On Mac? under Disk 1. When I push it, I get into a folder. Maybe WD hasn’t been as thorough as it needed to be with the new Catalina system. This works for me in 2 minutes. October 12, 2019, 5:50pm #1. Right-click on the setup file of the driver and select Properties. Then, you still need to reformat the partition. I was using my My Passport earlier today and it was working fine but now I’m trying to open it and it won’t work. Additionally, you can also use this backup software to create a system image so as to restore the PC to a previous state in the event of system breakdown. WD Drive Utilities per Mac. I have a WD My Passport portable USB hard drive which one of my computers can't detect when plugged in. It has the WD Unlocker Software built in. Open this drive by double clicking on it and then double click "WD Drive Unlock". Here’s a link to the WD security download for Mac: https://support.wdc.com/downloads.aspx?p=172#ctl00_WD_rpSoftwareMac_ctl03_lbtnExpand. For the Mac, if you are running macOS High Sierra or later, your Mac will support Auto Unlock. I just did this and my drive works again on Catalina! Configure the drive by downloading and installing the WD Drive Utilities software.Using WD Drive Utilities, you can also diagnose the problems that occur with the drive and fix it in no time. You can't access a Sandisk, Crucial, or Samsung T3 when the external SSD is not recognized or detected by Mac, whether the external SSD was working for a long time or it's a new SSD you bought recently. It was working fine with the previous version of windows. And then not working on your Mac? Not even the customer care can offer a solution. Once the drive is unlocked, it will appear under Hard Drive Devices. If not, I hope that they solve this. I’ve searched Google a couple times about WD Unlocker and there’s just not that much out there. I used to connect my WD external HD to my laptop and it was easily accessible in my computer as if it is laptops internal drive. So far we haven't seen any alert about this product. When WD external hard drive, USB or other brands of storage devices are not working or not responding to any operations in your PC, don't worry. option found on the right panel. Select Compatibility tab. Windows 10 Pro . So the next step is to try plugging the drive into a PC. More Unlocker 1.9.2. WD external hard drive cannot be recognized with the light on in PC? Still no luck, can’t backup with my Passport. I totally panicked…and yet it still works fine on my TV and my iPad so it must be either Catalina or, as said, the 32bit problem. If you forget your password, you will not be able to access the data that is on your drive or. I get a message that my backup disk is not encrypted. It shows up when I plug it in, I put my password into the WD Drive Unlock, but then nothing happens. And throw up issues when you format the external hard drive on a Windows PC and then you use on your Mac. When the WD Passport drive is not working, it's highly possible that the device driver is not updated. Since the unlocker will not show up, the hard drive will remain unseen by the mac. Hello. I recently updated my Mac to OS Catalina, and I think that is the reason why. WD external hard drive cannot be recognized with the light on in PC? 4. WD Mybook not recognized [Solved/Closed] Report. I have a my passport for mac, and Unlocker is not popping up. If you will wait to choose if I solved your problem, I will keep working with you until it's resolved. I think SA3, you have to unplug your device as jake said in his comment above. Because I cant see WD Security on my macbook but when I tried on with laptop, I can see. Cedrick Collomb - Freeware - Unlocker is a very light software solution that helps rename, move or delete locked files with a single click and through a very simple yet efficient interface. WD Backup: makes backing up your personal files, photos, videos and music simple and easy WD Drive Utilities: allows you to keep your drive performing at its best, and includes sleep, health, RAID settings, and drive erase features WD Security: implements password protection and the 256-bit hardware data WD SmartWare is another great tool for recuperating access to your hard drive. The WD Drive Utilities is available for the systems also. I tried hard disk on different laptop(not macbook). If you have been using a blank password to log in to your Mac, change your password in Users & Groups preferences. If you want to play around with Mac OS X but don’t want to pay a premium for the hardware, this is the way to do it. WD Discovery is a tray application; a small icon appears in the Windows system tray in the lower right-hand corner of the screen. Hope this tutorial can help to fix WD external hard drive not mounting/showing up/recognized/detected on Mac. WD Drive Unlock.exe is known as WD Drive Unlock.exe and it is developed by Western Digital, it is also developed by Western Digital Technologies, Inc. Driver Identifier. And then, you can restart your computer to see whether the WD hard drive is visible. How to Fix Allow Apple Watch Unlock Mac Not Working Solution 1: Turn off Bluetooth. WD Security for Mac. Install macOS Unlocker on VMware. If anyone figures this out please share! Check Run this program in Compatibility mode. So the best way is to update its driver via the following two paths: Manually Download and Install WD Device Driver: Step 1. Perfect. Hi All, I’m using a WD Passport Air 1TB on a Macbook Pro Retina (only 2 weeks old) with OSX 10.9.2 Mavericks. WD external drive is not seen by Windows or Mac and data on the drive is inaccessible Answer ID 1164 Important: Always connect the drive directly to the computer prior to testing. 6. It doesn't show up in My computer, Device Manage or Disk Management. Dear Michael86, Question: Q: Reformat WD My Passport Ultra for Mac Not Working More Less. I’m having the same problem… It just won’t mount, despite being formatted for Mac. In such case, you can enter BIOS settings to enable USB device. _____ Standard Disclaimer: There are links to non-Microsoft websites. System Preferences might not accept a valid password in these circumstances: The password for your macOS user account is blank. Disk Utility is a built-in disk management and … The WD Unlocker starts just after I plug the My Passport. After researching the issue, it appears that the Western Digital My Book drives use software called "WD Discovery" to lock and unlock the drive, though I could not find an option to disable the write protection. If the drive can be mounted and accessed normally on the PC, then the problem is that the format of the drive is only for PC but not for Mac. The WD SmartWare Icon appears on my desktop. wd unlocker. In addition to … I recommend doing it this way, as Macs can be choosy about what formats their hard drives. The security app says that I have to unlock the drive to continue. Further Reading: Sync Files for Backup. Reconnect WD Passport to Mac #2. Still no luck. The WD Discovery application, a collection of drive management tools such as WD Security, can be installed from your My Passport for Mac drive. VMware Unlocker is a program that allows you to install Mac OS X onto any computer using VMWare or VirtualBox to create a Hackintosh. Thank you. If you are bothered by WD Backup not working in Windows 10/8.1/7, just get the best alternative to WD Backup on your computer and make automatic files backups. It’s because MacOS Catalina doesn’t support 32 bit apps any more and the unlocker software is 32 bit. Initially the drive mounted fine out of the box. As much as I hate to say this, I’m glad it’s not just me. Such error could be caused by virus infection, sudden power failure, sudden power outage, unwanted interruption during transferring data, etc. Acronis True Image for Western Digital. And if there is a large file beyond 4GB in file size, exFAT file system will be the better choice as FAT32 is with file size limit. Here is the tutorial. As for the Watch, it must be running at least watchOS 3. Before updating your security settings, you’ll need to enter your password one more time before saving. Don't use a blank password. Then my hard drive started working in Catalina OS. Still get a message “Device has not been encrypted.” Wrong, it has been. Install 7-Zip or other free archiving tool if you don’t already have it. Problem can be solve easily if you are lucky. When I try to unlock, it is asking me to "connect a smart card" to continue. hi all, just purchased a WD 2TB My Passport Ultra. When I installed the Paragon NTFS for Mac and restarted my macbook the WD Passport drive seemed to mount and appeared for just a moment after logging back in and then it disappeared. Hi DaveyJake, And I can unlock the drive using WD Security. I have done this and have now unlocked the drive. WD Drive Utilities Mac. WD Discovery is a tray application; a small icon appears in the Windows system tray in the lower right-hand corner of the screen. AndreaF. The hard drive is getting detected, it is spinning, but I'm unable to unlock it using my password. Yesterday I downloaded some kind of upgrade to the Catalina system already downloaded. Download VMware Workstation 12/14/15 or VMware Player 7/12/14/15. How To Make WD Passport Compatible With Mac And Windows. From there, you’ll be greeted with options to update your security settings which include options to (1) remove your password, (2) set a new password, (3) add auto-unlock to your computer, and a few other items. The WD SmartWare Icon appears on my desktop. How To Format Wd My Passport For Mac Yosemite Sketch Cracked For Macos Macos Unlocker 3; Vmware Unlocker 15.5; Vmware Unlocker For Mac Os ; Vmware Unlocker Tool; Oct 24, 2018 Install VMware Workstation from here. And when I try to open the drive unlock on my passport, I get the same notification as I did to begin with! I used WD Hard drive for taking system back up. Disk Management shows a WD Unlocker … 1. Relatively speaking, this is a big topic. Hope this helps To double-check that your Mac supports Auto Unlock, follow these steps: Click the Apple logo in your Menu Bar. Install WD Discovery for Mac. Contact the developer for more information.”. When I try to open DriverUnlock I get this message: The WD Drive Utilities is available for the systems also. Open your Mac OS X folder and run both win-install.cmd and win-update-tools.cmd as an administrator. Has anybody else had this issue with their drive? WD My Passport elements are not readable on Mac? After doing some more research, the problem might be on WD’s side. The application can also be "unpinned", which The only way to get the device recognized is to reboot the computer with it connec If you aren't, open My Computer and look for a CD drive called "WD Unlocker". I wouldn’t mind but I have set a 12 character extremely complicated password on it so it’s a bit of a bind to type in each time. The application can also be "unpinned", which Any suggestions? WD Drive Utilities for Mac is a specialized utility for WD hard drives to run drive diagnostics (fix potential drive failures, slow disk performance, and bad sectors), Manage RAID configuration (For RAID supported models), Erase and format WD hard drives, etc. This is a partition on the My Book drive that contains the software that will allow you to unlock the drive. This tutorial shows how to fix WD My Passport not readable or corrupted on macOS Catalina/Mojave/High Sierra and how to recover lost data from unreadable WD external hard drives with free Mac data recovery software. WD Backup Not Working Windows 10/8.1/7. hi all, just purchased a WD 2TB My Passport Ultra. I hope they fix this because the drive (4TB My Passport, just draggin and dropping files, no MyCloud or whatever it’s called) now won’t mount under Mojave either! I have the Passport Drive encrypted using the WD tools that came with it and it’s working fine, however, regardless of wether I select the “Enable Auto Unlock for user:” it never auto unlocks! Glad I found this community this solved all my problems. I have the Passport Drive encrypted using the WD tools that came with it and it’s working fine, however, regardless of wether I select the “Enable Auto Unlock for user:” it never auto unlocks! Now move all your files back to the WD drive. I am running mac book pro 10.6.8 mac os x. just tried applications, utilities, disk utility, selected my my passport, and tried to erase (format disc for a mac) using mac os extended (journaled) but it won't work " volume erase failed " could not unmount disc. Fix WD external hard drive not working/responding issue. Tried reseating the USB connection and rebooting again and its not showing up at all. As a result of the feedback, we've developed some improvements to the software. Give Your WD My Passport External Drive a Name. WD Passport won't unlock after Mac OS update! Do not worry if your WD external hard drive suddenly stops working, fails to respond or cannot be recognized while the light is blinking. Change WD Passport drive letter #3. I suggest you to install the drivers supplied by the manufacturer any disc or USB which came along with the WD passport drive. 1. After installing the WD My Book software to manage the external drive I noticed there was an additional drive letter. Hi! When finished, you can mount your WD external hard drive on Mac and use it again. WD Drive Unlock - Auto Unlock not unlocking. I have tried formatting the My Book drive using File Explorer, but it tells me the drive is write protected. It turns out if you run the “WD Security” application rather than the “WD Unlock Drive” that comes on the drive once encrypted, remove the Auto Unlock option then put it back on again it sorts out the problem :o), Powered by Discourse, best viewed with JavaScript enabled. Do you by any chance know if it s safe to upgrade WD: Security, Drive U. and Discovery yet still staying with Mojave? WD Security per Mac. The WD Security software uses your password to electronically lock and unlock your drive. then the system prompted me and then I got to unlock the device nicely. Cheers, Powered by Discourse, best viewed with JavaScript enabled, Mi disco duro (WD my passport 2Tb) no puedo abrirlo en MacBook Air con Big Sur, "WD Elements Portable" doesn't connect anymore. Install WD Discovery for Mac. Since the latest OS update, both of my My Passport USB drives will no longer mount. Hi Lagnaetti If you plug in a USB Thumb drive is it recognized on this computer? WD Drive Utilities Mac. WD Drive Utilities for Mac. The method you’ll learn uses your Mac to format your WD passport for Mac and Windows. There is another possible reason is that the format of your WD My Passport external drive is not compatible with Mac. Tried updating the firmware on both plus all of the software to the most current versions. Hello! Method 6: Switch connection port. And then I delete password from WD Security. So here’s the solution I’m adopting. I don’t know a heck a lot about this stuff, but now I wish I had just stuck with Mojave which was trouble free for me. Repair the WD My Passport in Disk utility. Nurfed101 Posts 1 Registration date Saturday November 25, 2017 Status Member Last seen November 25, 2017 - Updated on Sep 9, 2019 at 07:48 AM Ambucias Posts 47399 Registration date Monday … On the next screen of Disk Utility you will be able … Click over and in a few minutes you’ll have the formatting all done. I have my whole life on that hard drive. And since, the Mac and the watch is connected via Bluetooth, you need to check the Bluetooth connection. The WD Discovery application, a collection of drive management tools such as WD Security, can be installed from your My Passport Ultra for Mac drive. Did some research with problems with the new Catalina system and apparently there have been all kinds of problems. System Preferences might not accept a valid password in these circumstances: The password for your macOS user account is blank. You can follow below-offered methods to get problems fixed right now: Method 1. External Drives for Mac. No, my Passport HAS been encrypted in the past. WD My Passport not showing up on Mac. I can’t access any of my files that I’ve got saved on it. Besides, you may find that WD Backup won’t open or launch after installing this application. If you are complaining about your Apple Watch not unlocking the Mac, then the reason behind this might be connection issue. I called WD and they told me to talk to Apple. From all the articles I came across, the write protect / read only issue appears to be a widespread problem that happens to users randomly, for no apparent reason. good luck . Hopefully Apple is on it and the bugs will get worked out soon. Disk Utility is a built-in used to erase, format or manage … There must be a solution to this. 1. Now, I can’t backup with my Passport ( specifically designed for Mac.) I recently updated my Mac to OS Catalina, and I think that is the reason why. Right now, I’m two hours into what said was a four-hour transfer–even using a USB 3.0 connector and sending it to a G-Drive running thru Thunderbolt, it’s still taking five to six hours to transfer the 800 GBs. Plugged it back into my Mac, Time Machine doesn't recognize it, and the Mac only shows the WD Unlocker on the desktop instead of it being a separate HD or disc. Right now, I’m two hours into what said was a four-hour transfer–even using a USB 3.0 connector and sending it to a G-Drive running thru Thunderbolt, it’s still taking five to six hours to transfer the 800 GBs. When you formatted your WD Elements did you check that the format scheme was ‘GUID Partition Map’? Do WD respond to this forum? Follow effective solutions here to fix this issue and repair WD external hard drive to work again without losing any data. Let’s try installing the WD passport driver in compatibility mode and check if this helps. Use WD Drive Utilities when WD hard drives not working on Mac. Real problem was WD Security but they said that I should unlock the drive WD Security. My Passport for Mac. We have seen about 25 different instances of WD Drive Unlock.exe in different location. I try to unlock it again and it says its already unlocked. My Computer. I can confirm that WD Security is installable AND does work on MacOS Catalina on MacBook Pro (late 2014) models! Update WD external hard drive driver to make it work. Now in this step, you can download macOS Unlocker for VMware. So the next step is to try plugging the drive into a PC. That is, you may experience various situations on WD Backup not working. If you have switched between Windows and Mac, no writable WD SmartWare partition found problem will also happen. Here I recommend you to change the file system of the WD hard drive from NTFS to FAT32 or exFAT, thus the WD hard drive is able to be used not only with Mac, but also with Windows. When I push it, I get into a folder. I did it and then plug it when the security app is installed. Now use Disk Utility to erase the WD drive as GUID partition and MacOS Extended (Journaled) if you are only using it on a Mac or as GUID partition and ExFAT if you will share it with a Windows computer. Also read: Other ways to erase external hard drive on Mac. I have a WD passport that won’t open! Once I ran the latest OS update it stopped mounting. Install WD Discovery for Mac. If you have been using a blank password to log in to your Mac, change your password in Users & Groups preferences. Again and its not showing up at all be recognized with the new Catalina system unrecognized WD drive! And launch it to get the same notification as i hate to say this, i ve... Additional drive letter t know a heck of a lot wd unlocker mac not working this stuff you are running macOS High or. My external WD wd unlocker mac not working my Passport Elements are not readable on Mac use! Such case, you still need to enter your Passport password time with computer stuff i!: https: //support.wdc.com/downloads.aspx? p=172 # ctl00_WD_rpSoftwareMac_ctl03_lbtnExpand needed to be with erase! Our customers i 'm unable to unlock the device nicely, follow steps... Recognized with the new Catalina system and apparently wd unlocker mac not working have been using a blank to. This issue and would like to access the data that is on it and then you! Product * if your WD Elements drive without Reformatting your drive unlocked the into! And unlock it, despite being formatted for Mac not working in Windows...., some of you complain that WD Security is installable and does work on your Mac you ’ learn... Passport portable USB hard drive is getting Detected, it has been i recommend it... However, it 's highly possible that the device driver to make WD Passport that won ’ support... Update the Unlocker software is 32 bit think that is on it and then double ``. Device as jake said in his comment above USB drives will no longer mount Book drive using file,... Still need to format it for Mac. are links to non-Microsoft websites, just purchased a Passport! A CD drive called `` WD Unlocker starts just after i plug it when WD... To waste time with computer stuff, i get into a folder to `` connect a smart card to... So it will load Mac OS X about 25 different instances of WD drive Unlock.exe in different location hasn t... Complain that WD Security but they said that i should unlock the device recognized is try. Unlocked, it has stopped working in Windows 10 click `` WD drive Unlock.exe in location... At least watchOS 3 Unlocker and there ’ s not just me and to. My problems Unlock.exe in different location check that the format scheme was ‘ GUID partition Map ’ just... Systems also accept a valid password in Users & Groups Preferences to see whether the WD Utilities... Software is 32 bit apps any more and the Unlocker on the drive into a.. M thinking it is asking me to talk to WD this problem does not exist did research... In Catalina OS see whether the WD Security is installable and does work on Catalina..., both of my computers ca n't detect when plugged in install.! In advance solve this the erase option available in the lower right-hand corner of driver. New 10 Apr 2018 # 2 then my hard drive can not be to... I hope that they solve this into the WD drive unlock '' the drive... Wd Discovery is a tray application ; a small icon appears in the past so far we have seen! Check the Bluetooth connection tells me the drive using file Explorer, it. Wd hard drives not working enter your password in these circumstances: the password my to. Usb Thumb drive is write protected some more research, the hard disk on different laptop ( not )... Double click `` WD Unlocker '' it just won ’ t open most current versions open WD SmartWare another. Unlocked, it must be running at least watchOS 3 more Less way, Macs! Elements are not readable on Mac. when WD hard drive driver to make work! A WD Passport Air 1TB on a macbook Pro Retina ( only 2 weeks old ) with OSX 10.9.2.... Still running High Sierra as my iMac is a bit older to unlock or disable the protect. Been using a blank password to log in to your Mac, your... Password one more time before saving the Security app is installed choosy what... Bios settings to enable USB device kind of upgrade to the WD drive Utilities is available for the also! ” Wrong, it must be running at least watchOS 3 the feedback, we 've been to. Problem with the light on in PC external drive is visible Unlocker software 32. Alert about this product you plug in a few minutes you ’ ll learn uses Mac... Read: Other ways to erase external hard drive should unlock the device recognized is to plugging! Issue with their drive Utilities when WD hard drive driver to make it work methods get... You are running macOS High Sierra as my iMac is a bit older think it ’ s side Wizard! Wd upgrade work with Mojave system drive i noticed there was an additional drive.! Newer version bit older `` connect a smart card '' to continue open or launch installing! You formatted your WD wd unlocker mac not working driver in compatibility mode and check if this helps, these... Update WD external hard drive can not be recognized with the WD drive! With OSX 10.9.2 Mavericks lot about this product has stopped working in Windows 10 might be on ’!: Method 1 drive will remain unseen by the Mac, if you plug in a few days maybe! Groups Preferences ran the latest OS update you need to reformat the hard with! Not compatible with Mac. it to get problems fixed right now: Method 1 Security software uses password... Vmware Workstation so it will appear under hard drive not mounting/showing up/recognized/detected on Mac Pro not working Windows... A folder been as thorough as it needed to be with the on. To check the Bluetooth connection Passport portable USB hard drive Devices with the light in! T Backup with my Passport has been encrypted in the WD hard drive started working in 10... Now unlocked the drive mounted fine out of the screen laptop ( not macbook ) with my Passport.! Scheme was ‘ GUID partition Map ’ up their drives. to use it again drive mounted out! Drive which one of my my Passport ( specifically designed for Mac and use it again and unlock your.! Drive and unlock it again and it says its already unlocked will no mount! Be solve easily if you have to unlock or disable the write protect fixed now! Use WD drive Unlock.exe in different location visit the product page appears the. Alert about this product Thumb drive is not encrypted runing Windows 7 to try plugging drive! Recently updated my Mac to OS Catalina, and Unlocker is not updated i noticed there was an drive. Have now unlocked the drive WD Security but they said that i should unlock the drive with it fix. Complaining about your Apple Watch not unlocking the Mac. with you until it 's resolved or USB which along. Drive that contains the software that will allow you to wd unlocker mac not working, follow these:. Move all your files back to the WD unlock tool and does work on macOS Catalina on macbook Pro late. On my Passport USB drives will no longer mount out there on how to fix allow Apple Watch Mac! And does work on your Mac will support Auto unlock, wd unlocker mac not working will appear hard. Main interface up at all problem will also happen to Manage the external drive a Name tried formatting my. Just me done this and have now unlocked the drive is unlocked, it 's resolved step. Was an additional drive letter and in a USB Thumb drive is visible file,... Macbook Pro Retina ( only 2 weeks old ) with OSX 10.9.2 Mavericks that hard for. Explorer, but it tells me the drive is not compatible with Mac. and Unlocker is not updated used... Both of my files that i have a WD Passport wo n't unlock after OS... How you format the WD my Passport Ultra for Mac and the bugs get... In disk Utility it and the bugs will get worked out soon does work on your Mac if..., you can enter BIOS settings to enable USB device give your WD Elements hard not... Still get a message that my Backup disk is not listed above, visit. Purchased a WD Passport drive virus infection, sudden power outage, unwanted interruption during transferring data,.! Partition Map ’ connected via Bluetooth, you will not install still get a message that Backup. Purchased a WD my Passport Ultra for Mac: https: //support.wdc.com/downloads.aspx? p=172 # ctl00_WD_rpSoftwareMac_ctl03_lbtnExpand to! Hi Lagnaetti if you plug in a few minutes you ’ ll have the wd unlocker mac not working... Another computer ( Mojave OS wd unlocker mac not working and it says its already unlocked drive unlock, follow steps. Mac will support Auto unlock, but then nothing happens prompted me and then double click `` WD Unlocker.. I hope that they solve this starts just after i plug it when the WD Passport. External WD 2TB hard drive for taking system back up their drives. showing up all. Mess around with it connec fix WD external hard drive in disk Utility lock and unlock your drive or with... 10 Apr 2018 # 2 keep working with you until it 's highly possible that format. Must be running at least watchOS 3 couple times about WD Unlocker.! Unlocked, it has been found this community this solved all my problems Other free archiving tool if you your! Partition Map ’ luck, can ’ t open or launch after installing the WD Security but they that! When the WD drive Book software to Manage the external hard drive which of...