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

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6
votes
1answer
9k views

OS X Yosemite attempts to eject external drives after sleep

I have 2 external drives that I use respectively for Time Machine and for all my work. I installed OS X Yosemite today and now every time my iMac goes to sleep (I never turn my macs off) it attempts ...
3
votes
2answers
11k views

I want to install Windows 7 on an external drive

I've read two articles about booting Windows from external drives as opposed to a stock Bootcamp install. Here are the links: http://kevtg-compuproductive.tumblr.com/ ...
1
vote
2answers
15k views

Copying applications from applications folder to external and reinstalling osx

Is it possible to copy all my applications from the applications folder onto an external, format my mac, reinstall OS X and finally copy the applications back into the applications folder for ...
3
votes
2answers
5k views

Error: “couldn't unmount disk” keeps coming up when formatting external HD to eXFat

I have a WD "my Passport" external HD that is currently formatted for a PC and I would like to format it to eXFAT. Every time I hit "erase" in disk util it just comes up with the error "couldn't ...
6
votes
4answers
24k views

Formatting USB Disk As EXT3 On Mac

How can I format a USB disk as ext3 using OS X Yosemite? I want to use it on another system that is linux based but I wish to format it first before connecting to the linux system.
0
votes
2answers
17k views

external hard drive found only by disk utility, cannot eject or mount

I'm using a Seagate GoFlex that seems to have encountered some trouble. The drive does not appear on the desktop or Finder. I've double checked that Finder > Preferences allows for it to appear in ...
3
votes
1answer
251 views

Install Bootcamp on external drive where OS X installed

I have 128G SSD internal storage. And wanted to install Bootcamp on external drive (USB storage). Found out that Bootcamp could not be installed on the external drive. So I thought to install OS X ...
0
votes
2answers
276 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). ...
0
votes
1answer
21 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 ...
0
votes
0answers
25 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 ...
3
votes
2answers
852 views

Can't erase unmountable external HD

My external HD isn't mounted and can't be repaired by Disk Utility. However, I'm also unable erase the disk: $ diskutil list disk2 /dev/disk2 #: TYPE NAME ...
6
votes
5answers
3k views

External USB drive connected to Airport Extreme doesn't show up in Airport Utility

I have connected an external drive to my Airport Extreme, but it doesn't show up in Finder, and it doesn't show up in the list of drives when I connect to the Airport Utility. The same drive worked ...
11
votes
8answers
4k views

How to Eject All External Partitions Quickly?

I have an external disk with two partitions on it that I keep plugged into my MacBook Pro when I'm at my desk. (One is for Time Machine, the other just for extra storage.) Sometimes I need to grab my ...
35
votes
3answers
27k views

How do I disable this message: “the disk was not ejected properly”?

Is there any way to disable the "the disk was not ejected properly" message? I use a KVM and need to switch between two systems and have a memory stick that is in the KVM. The problem is that it's ...
3
votes
1answer
2k views

How do I move my iPhoto library to an external drive available through Time Capsule?

Like many others, the number of photos that we are storing these days is growing. Also, we have multiple iPhoto libraries on various computers. So it makes sense to consolidate photos into a ...
0
votes
3answers
3k views

How to rename an external hard drive in Mac OS X?

I have 2 external hard drives supplied by the same vendor. They both have the same name. Using them with the mac is problematic when they have the same name. Time Machine, for example, tries to back ...
0
votes
1answer
63 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 ...
0
votes
0answers
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 ...
0
votes
2answers
9k views

MacBook Pro won't boot with new hard drive, but a different MacBook Pro will

So here are the details. My friend and I both have 13-inch Mid 2010 MacBook Pro's. Same processor and specs since they were purchased at the same time, but originally had 250 GB hard drives. His hard ...
0
votes
1answer
128 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 ...
1
vote
1answer
372 views

Backup/sync Mac photo to external hard drive

It's already making me crazy - as a newbie with Mac. I have problem with backup/sync of my pictures. I would like to backup pictures from Photo library (Photo app) to external HDD but more like sync. ...
2
votes
1answer
396 views

How to write to a Windows formatted disk from OS X?

I have 4 external hard disk formatted on Windows as NTFS, but they are lying unused since I bought a Mac. So I am looking forward somehow I should be able to write to those disc without having to ...
2
votes
3answers
206 views

Internal vs. External Storage for a new Macbook

I want to get a new MacBook Pro, and am confused by the storage options. The Apple website offers 2 different options for storage: Preinstalled internal flash storage (256, 512, or 1 TB) Thunderbolt ...
1
vote
2answers
723 views

Yosemite cannot detect SD card

I know their is a flood of these questions but I have a late 2013 macbook pro with yosemite 10.10.5 installed on it. My problem is it won't read some of my SD cards, i've run disk util with the pny ...
0
votes
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 ...
0
votes
0answers
30 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 ...
1
vote
3answers
63 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 ...
29
votes
4answers
24k views

How to view progress when encrypting a disk?

Mountain Lion allows one to encrypt any disk by right-clicking on the disk in the Finder and selecting Encrypt from the contextual menu. Is there anyway to check on the progress of this encryption ...
1
vote
0answers
83 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 ...
0
votes
0answers
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 ...
0
votes
1answer
23 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 ...
0
votes
2answers
62 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 ...
0
votes
0answers
28 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 ...
0
votes
1answer
79 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 ...
2
votes
1answer
82 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) ...
0
votes
1answer
53 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, ...
1
vote
0answers
21 views

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 ...
0
votes
2answers
524 views

Disk Utility can't repair external hard drive, tried fsck whats the next step?

When I try and repair my external hard drives (I have two corrupt now some how both I think from improperly ejecting from the same machine), I get this message: Disk Utility can’t repair this ...
2
votes
2answers
1k views

How to remount external drive in OS X El Capitan without rebooting?

I have a MacBook Pro 15 Mid 2014 with OS X El Capitan. When I accidentally disconnect the external USB disk (without clicking eject), I can't reconnect the disk. If I remove and plug the disk back in ...
18
votes
13answers
180k views

How can I repair a disk that Disk Utility says it can't repair?

I have an external hard-disk with a single Mac OS Extended partition. This disk stopped working couple of days ago. I tried to repair the partition with disk utility but no luck. The error message is ...
0
votes
2answers
82 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 ...
1
vote
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 ...
0
votes
1answer
215 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: ...
2
votes
1answer
22k views

External Seagate Hard drive for Mac - Compatibility

I am looking to purchase a Seagate External Hard Drive for my MacBook Air. The products claims it works only with PC (windows), however, I have read multiple places that I can just format the drive ...
0
votes
0answers
60 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 ...
5
votes
2answers
3k views

How to write fstab rules for an NTFS volume if the volume has no LABEL or UUID?

Basically, I was following this tutorial to enable writing to an NTFS Volume (which works when the Volume has a LABEL or UUID). I have an external USB drive with an NTFS volume that doesn't seem to ...
1
vote
1answer
62 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 ...
2
votes
1answer
75 views

Windows using Bootcamp won't read any USB memory sticks

I just installed Windows 10 on my MacBook (Early 2015, OSX El Capitan 10.11.2), and after everything set up I tried to plug in my External Hard Drive. I made sure this HD would and does work in ...
2
votes
1answer
64 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 ...
0
votes
4answers
17k views

Can't write on external HDD after upgrading to OS X El Capitan

I am using a LaCie external hard disk in my MacBookPro for 3 years. After having updated to OS X El Capitan, I am no longer able to write on the HDD and I have read-only privileges. Info shows that ...