A storage device attached to a computer, but not enclosed within the computer's casing

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How do I maintain/extend the user access control from my internal hdd on an external hdd?

I attached an external Firewire HDD do my iMac and want to maintain or extend the user accounts and group structure that I have setup on my internal HDD to my external HDD. How do I go about that? Is ...
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19 views

External Hard Drive Not Showing Up after dragging it to Terminal?

So from the left side of the Finder I accidentally dragged my external hard drive and now it doesn't appear there. I would like to see it there, I know it's reading it because I did an ls /Volumes and ...
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32 views

Why does my external harddrive not work when attached to this USB3 Hub?

I own a Macbook Pro 15" Mid 2015 which supports USB 3.0 and bought a Western Digital 2TB external USB3 harddrive and a USB 3.0 Hub from Anker with external power supply. When I plug-in the harddrive ...
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17 views

External USB Card reader stopped working (El Capitan)

I have two dell displays on my mac mini, both displays have a builtin card reader. For years, I've been able to insert an SD card and it's mounted w/o delay. For the last few months, I've noticed that ...
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1answer
32 views

Error code -36 - cp: Input/output error - mac

While I'm coping the file from the External hard drive to my MacBook Pro I'm getting Error code -36. Some recommended for dot_clean option, also I've tried and facing the same issue. Even I've tried ...
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46 views

Will an external USB 3.0 hard drive connected to an Elgato Thunderbolt 2 Dock run at USB 3.0 speeds even though the Macbook Pro is USB 2.0 only?

I have an older Macbook Pro (8,2 - Late 2011). It doesn't have a usb 3.0 port, only USB 2.0 ports. I have an Elgato Thunderbolt 2 Dock with a WD External HD, USB 3.0. I was expecting to see USB 3.0 ...
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1answer
31 views

Using External Drive as Backup & Storage over the network

I have a 3TB External Drive with NTFS format. It is with me even before buying an apple machine so there already is a lot of data. When I plug it into macbook I can access the data however I can not ...
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30 views

Time Machine External Hard Drive stopped being recognized

So I got a 2015 rMBP last year and also got a WD MyPassport External Hard drive with it for Time Machine backups. It ran perfectly a few times a week until yesterday when I plugged it into my Mac. It ...
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43 views

Freecom HD Freecom 1TB encryption “A partition, not a whole disk, is required for this operation”

I have a Freecom HD Freecom MG (1000GB, Aluminium) which I wish to use as a Time Machine disk. I tried to encrypt the disk but got the error "A partition, not a whole disk, is required for this ...
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2answers
26 views

How to query the history record of when the USB driver which has been used?

I always use one USB flash disk on my MacBook Air (OS X 10.10.3), but I lost it recently. I need a way to view when the last date & time the USB device was connected to the computer.
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39 views

Accessing files on external drive through USB

I am using a MacBook Pro Late 2011. I lately took out the hard drive and replaced it with a new one. The old HDD still has OS X installed on it, so basically I did nothing before taking it out. Now I ...
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16 views

Missing folder and it's contents on external hard drive. Permissions issues too

I did a deep search to see if I could find an answer. I had posted this incorrectly in the wrong place but then found this group. And I hope some genius can help me. I've had a Toshiba drive that ...
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1answer
26 views

External Hard Drive Size Problem

I recently bought a 4 TB Seagate Desktop Expansion external hard drive. However, after formatting it with Disk Utility the device still says 4 TB but the capacity says 1.8 TB. What is going on?
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24 views

Can I use Time Machine for multiple different backups?

I have my Macintosh HD 500 Gb who backs up on two external hard drives (both 500 GB), so i have always two backups! But i have an other external hard drive (1TB) with a lot of footage on it which i ...
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1answer
23 views

What is the best solution for a free partition recovery?

Recently I accidentally partitioned my Seagate Backup Drive (1 TB) not knowing that everything would be wiped off (silly me). I am now in shock knowing that my files are somewhat gone. I have tried ...
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30 views

How can I add a partition to my Seagate external hard drive?

I am trying to add a partition to my Seagate external hard drive so that I can install Windows 10 on it but it won't let me add a partition at all. With a previous external hard drive I had (that no ...
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1answer
81 views

Changing the Finder icon for an external disk formatted as ExFat?

I used this web page recipe - Create Your Own Custom Icons in OS X 10.7.5 or Later - for creating a .icns icon set containing a set of icons for an external disk that has been formatted with the ExFat ...
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15 views

Using External hard disk on Macbook

I am using a MacBook air with OS X El Capitan. I am using a Windows 7 VM too in my MacBook. I usually download video files using torrents and store it in the macbook. When I copied these movies to an ...
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200 views

Can I copy a bootable El Capitan installer USB stick to a hard drive partition and install from there?

I am salvaging a mid 2013 MacBook Air 11" that was discarded with a broken screen backlight due to beverage spill and missing its SSD. (I have a very tiny budget right now so I'm only spending on more ...
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1answer
23 views

Is it possible and relatively easy to boot a 2013 MacBook Air from an external drive?

Given a MacBook Air that's working but with dead display and SSD, can I use it as a desktop-only machine with an external monitor and external hard drive? The guy at the Apple Store Genius Bar this ...
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41 views

Encrypted Seagate 5TB External HD Unable to Mount

Been roaming informational posts all over the web about similar situations and I see it's a common issue but none of the solutions seem to work. This is my wife's external hard drive which she stores ...
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3answers
86 views

External drive does not mount after plug off without eject

I accidentally unplugged my hard drive without properly ejecting it, and now the drive does not mount when plugged in. What can I do to make it work again? I can see the disk in lsusb and diskutil ...
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96 views

How can I repair hdd using Disk Utility if First Aid options (Repair, Verify) are all greyed out?

Would really appreciate any help in fixing an external drive so can use with my Mac again. I had a power loss & when computer rebooted it was unable to see the attached Freecom 320Gig Hdd (FAT32 ...
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9 views

After I remove the external hard drive and plug it in afterwards, disk names change to diskname + 1

I'm using Western Digital My Passport 0740 Media and there are two partitions called Install OSX Yosemite and backup. Whenever I remove the hard drive and plug it in afterwards, backup disk's name ...
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1answer
26 views

Disk utility killed my external drive

I have a problem with disk utility. I have a external USB3 drive, formatted HFS+. It should hold roughly 500GB out of 1TB of Data. Now Finder told me, that the data was there but no files were visible ...
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2answers
71 views

Problem when booting OS X from an external USB drive

I would like to create a Fusion Drive from my SSD and HDD both installed inside my MacBook Pro 15" Mid 2012. I've read an article online which said that in order to do that, I'd need to boot Mavericks ...
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30 views

External SSD not recognized after ejection or reboot

I have an USB external mechanical disk. It works fine, and I can remount it after ejection. Also, it is mounted automatically after a reboot, as it should be. I got an USB external SSD, too. It works ...
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112 views

Ext HDD won't mount

I have several Ext. HDD attached via USB to my iMac. Turning the mac on this morning three of the four drives mount no problem. (all in the same ext power / usb tower) but one drive does not mount. I ...
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1answer
92 views

How to format a Seagate HDD to OS X Extended (Journal) with Disk Utility

I have just got a new external hard disk, the Seagate Expansion 2 TB, and I am trying to format it to work on my Mac. I was told that I had to erase the disk and format it to OS X Extended (Journal) ...
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68 views

External hard drive knocks out wifi Internet

I have two external hard drives attached to my 2012 Mac Mini running El Capitan. All has been OK for around 2 months. Now, when one drive powers up, it forces my Sky WiFi Internet connection to drop, ...
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2007 iMac 24" beach ball at login

I just recently installed a Seagate 2 TB internal hard drive and installed Yosemite. If my WD external drive is connected via firewire during startup, the iMac boots and shows the users, but when I ...
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95 views

Seagate is not allowing me to make partition on MS-DOS (FAT) Or ExFAT!

I just bought an external hard drive (Seagate Backup Plus Slim 2 TB) for my Mac (Yosemite installed) for professional photography. I wanted to make partitions for both Mac and Windows, but it only ...
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308 views

Updated to 10.11.4 now getting “Disk not ejected properly” every time my Mac mini sleeps

Been running El Capitan since it was officially released. Updated to 10.11.4 a few days ago. I have a WD Elements USB 3.0 drive connected to my Mac mini (directly to the rear ports, not via a hub). ...
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67 views

El Capitan keeps creating new mountpoints for external drive

I am new to Mac, I used Linux before and I am experiencing troubles with my external HDD (NTFS formatted). I used osxfuse to mount it as read write (via ntfs-3g) - I used tutorial from this site So,...
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1answer
74 views

USB external harddrive not being recognised

My WD 2 TB hard drive has suddenly stopped being recognized by my MacBook Pro, running OS X 10.11.3, but it's working on my ThinkPad, running Windows 7 and Linux Mint. The solution I found was to ...
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1answer
63 views

How can I make an external drive behave as an internal drive?

My question is pretty much summed up by the title, I have an external drive which I'd like to have recognized as an internal drive. How can I do that? Thanks for looking at my question. By the way I ...
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1answer
68 views

How to delete all files in Pictures folder after I moved all the pics to external HD

I am not a Mac owner and am only helping a friend. He bought a new external HD and he wanted to backup all of his pictures (he uses iPhoto). So, I drag and dropped the Pictures folder onto the HD (...
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1answer
87 views

External hard drive disconnected during reformat: now will not format

Using disk utility, I was erasing and re-formatting to FAT. During that process, the usb cable was removed. Now, the hard drive will not format. When recognizing the hard drive, a window shows up ...
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39 views

How to share mount from a Parallels Ubuntu guest to host?

If I have, say, an external USB drive mounted inside my Ubuntu guest in Parallels, how do I share the mount point back to my OS X host? The Parallels docs talk about making OS X folders visible from ...
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1answer
69 views

How do I force Spotlight to stop corrupting my external hard drive and destroying my time machine backups?

I am at my wits end with this horrible technology. I've been through this cycle over and and over again. I explicitly tell spotlight not to index my external hard drive. It ignores my wishes and ...
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1answer
31 views

Alias to folder on external hard drive disappears from sidebar when the hard drive is ejected

I've made an alias to a folder on my external hard drive and added it to Finder's sidebar. Whenever I eject the external hard drive the newly added item to the sidebar disappears and doesn't reappear ...
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2answers
76 views

Cannot copy from MAC to Pendrive

I attach pen-drive to my Macbook-air. It is detecting and I can also copy from my pen-drive to my Hard disk. But I cannot copy data from Hard disk to pen-drive. I tried with different pen-drives, but ...
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71 views

Finder won't search external hard drive now that I've updated to 10.7 Lion

I recently updated from 10.6 to 10.7 and now Finder won't search my network attached sever. It worked fine up until the update. I have tried re-indexing the Spotlight Search, but that doesn't work and ...
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30 views

Problem with kextunload SD card remount

So I got one of those SD card flush mounts, but it occasionally self ejects. I'm trying to solve that via kextunload given on this page Entering: sudo kextunload -b /System/Library/Extensions/...
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1answer
23 views

When I try to move the folder, the copying process begins

Why, when I move (using mouse) one folder into another, instead of moving, copying process starts? How to fix it? OS X El Capitan Folders are located on an external drive, GUID partition scheme, ...
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1answer
329 views

Unmounted hard drive times out ejecting or mounting

I have a Drobo connected via Firewire to my MBP which is causing me some issues. Here is the diskutil info: Device Identifier: disk2s2 Device Node: /dev/disk2s2 Whole: ...
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40 views

Drive stays mounted for just a couple of seconds

I have an externa WD My Passport Pro disk configured as two individual 2 TB disks. After I erase it (Journaled, Encrypted, Case insensitive) it is mounted and immediately unmounted. Disk Utilities ...
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2answers
90 views

Inherit Time Machine backup after changing source hard drives

I am using Time Machine to backup an external HDD (A) (2 TB) linked to my computer to an external 6 TB HDD drive. I now had to shift the data from HDD (A) to a new 3 TB one (B). Is there a way to ...
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1answer
46 views

How can I safely clean up open files left by spotlight on my external hard drive?

Spotlight decided to index my external hard drive that I use for backups without asking my permission. This made it impossible for me to safely eject the external hard drive without potentially ...
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2answers
1k views

How do I export photos from my iPhone 6 to my Western Digital external hard drive for backup copies?

How do I export photos from my iPhone 6 to my Western Digital external hard drive using my Mac? I need to clear up space on my phone already and can't believe how frustrating it is trying to figure ...