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

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USB drive causes “OS X Can't Repair The Disk” error repeatedly

I've got a 2.5" 1 TB external that I've used for a couple years now. Initially it was in an OWC enclosure, and then more recently its in a Sabrent enclosure that I bought off of Amazon to get USB 3.0 ...
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16 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 ...
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1answer
23 views

External Drive showing only in system profiler

I have had a 1TB Western Digital Ultra external hard drive for nearly year. Out of nowhere it will not show in disk utility but it does show in system profiler. I have a Macbook pro mid 2012 running ...
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1answer
41 views

Failed to mount partition of Mac OS Extended (HFS+)

As a matter of fact, my 1 TB External hard disk has three partition: "MAC OS", "NTFS" and "FAT32". All of the partitions worked very well in the past. However, I just discovered that my Mac OS ...
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36 views

External hard drive deep freezing Macs

A quite nice problem: I have an external USB 2.0 harddrive (Lacie Starck with 512GB) which was working fine during the last years. But now everytime I connect it to a Mac 3 seconds later a total crash ...
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2answers
61 views

Can I boot OS X or Windows Boot Camp from an external USB Type-C drive?

Currently I boot OS X and Windows Boot Camp from an external Thunderbolt HDD. LaCie just announced a new external USB-C (USB 3.1) hard drive enclosure. Will I be able to boot OS X or Windows Boot Camp ...
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2answers
27 views

I have Installed Windows 7 on an external drive and I want to replace this drive with a larger capacity one. What should I do?

I'm using a Mac Book Pro. I boot my Windows 7 from an external drive. As this drive is getting full, I want to replace it with a bigger one. What should I do to move the Windows 7 from the one old to ...
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1answer
59 views

Suddenly some folders are unreachable from my external hard drive

I have a MacBook Pro and I partitioned the internal SSD into two parts (150GB and 50GB). One of them (the 50 GB part) contains a bootcamp with Windows 8.1. I also have an external hard drive, which is ...
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1answer
76 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 ...
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2answers
65 views

External Drive Won't Show Up Even Though It's in Disk Utility

My disk utility shows that the path is verified when I repair and verify the disk. It shows up fine in disk utility. But even after that, it doesn't show up on my hard drive, either on the left nav ...
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1answer
143 views

Implications of using a USB SSD drive to run VM images off

I'm running VMware Fusion on my Apple Macbook Pro (15 inch, Mid 2012, OSX 10.10.2), and have several VM images that are stored on an external USB3 disk (WD Passport). The external disk is fine for ...
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77 views

“Couldn’t create temporary file.” error when erasing free space on external disk

I was trying to wipe the free space of an external USB 3.0 disk in OS X (Yosemite) disk utility. However, I receive the following error: EDIT: The disk is formatted as GUID / Mac OS Extended ...
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2answers
381 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.
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1answer
23 views

Mount combo (USB/COM) device

I've bought this simple navigator that works fine on PC using the software released by the company but there is no mac version for it. Under mac the navigator was supposed to be mounted as an external ...
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1answer
363 views

Fixing my external hard drive's partition map

Okay, so something really strange has happened, and it's a doozy, so please bear with me. Problem: I need to fix my hard drive's partition map So let me fill you in on what happened here. I ...
2
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1answer
35 views

Using Console.app - how to find disk force eject logs?

I've been having a number of issues with external disks force unmounting (most often while waking from sleep). Where can I look in Console.app to track down the potential issue?
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0answers
85 views

fsck not working to fix corrupted external drive

I am using an early 2011 MacBook Pro with the Mavericks OS. I've researched a similar issue on an internal drive but As far as I know, being in Single User mode won't help my situation. One of my ...
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2answers
58 views

Online backup strategy or software for computer and external drive

I'm looking for an online backup strategy for my photos but there's something that none of the systems I've looked at addresses... I keep my most recent photos on my mac and move them off to an ...
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21 views

folder became bigger when copy from one external disk to another

I have 2 external disks connected to OSX Yosemite, the new disk is 4Tb and old disk is 2TB, I tried to copy all stuff from old disk to new disk using rsync: rsync -a /old_disk /new_disk The old ...
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1answer
105 views

How to reset a Seagate FreeAgent Go Mac External Hard drive to use with a new Mac?

I have a 500 GB external hard drive that I want to use with my new Mac (OS X Yosemite). I simply want to clear the external drive of everything that was on my old Mac (I don't want to transfer any ...
2
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1answer
192 views

Automatically unmount external drives when shutting down OSX?

I'm running OSX 10.10 Yosemite. When I try to shut it down, if I have an external drive connected the shutdown stalls on a black screen with the mouse pointer visible, and movable. This happens even ...
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1answer
117 views

Automatically move all files from within a folder to external SSD, When external SSD is connected

I have a GoPro 4 which ends up creating very large high quality videos, when connected through USB the Gopro importer app automatically copies the files to a subfolder named by todays date in ...
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2answers
103 views

How do I install Mavericks onto external HD but from inside VirtualBox

I don't want to lock down my machine for the install. Can I hand it off to a virtual box process? Open virtual box Create virtual Mac Attach Mavericks install pen drive to virtual Mac Attach real ...
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1answer
216 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 ...
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56 views

CoreStorage encryption fails - Is it possible to have multiple encrypted partitions on an external drive?

I have a 2TB WD MyBook Studio drive connected via FireWire to my MBP. What I would like to have is two encrypted partitions. So what I do: Disk Utility > Partition and then right click on each ...
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3answers
124 views

How to synchronize contents of two external drives?

I have two external hard drives (ExFAT formatted) which I need to keep in sync. Specifically, drive B must mirror the contents of drive A and drive A must not be modified. How can I do this without ...
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2answers
966 views

My NTFS formatted external Toshiba drive is unreadable since update to Yosemite OS X 10.10.1

My portable external Toshiba hard drive is now unreadable on my MacBook Pro early 2008 aluminum computer. Since updating to Yosemite OS X 10.10.1, I cannot recover my files stored as Time Machine ...
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39 views

WD Drive Cannot be Repaired but program still running

I have an external hard drive that I use to run my iTunes, iPhoto library and store various other documents. Recently, it stopped connecting to my MacBook Pro. I can only see my WD Ultra external ...
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1answer
96 views

screensaver causes error “share does not exist on the server” to endless loop

I've been trying to learn to automate my home Mac environment with Applescript. I've had some success, but am running into seemingly inconsistent and troublesome errors. In order to diagnose the ...
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73 views

Encrypted External Drive Using Apple's Password Generator and Forgot the Password: Can It Be Salvaged?

I have a partition on an external HD with some Time Machine backups. I decided to encrypt the partition using Finder and used Apple's built-in password generator to create the passphrase. ...
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288 views

WD Passport 1TB USB 3.0 Time Machine external HD not being recognized on Yosemite

After upgrading to Yosemite my external HD is not being recognized. My HD is a WD My Passport 1TB USB 3.0 and I have a MacBook Pro Late 2011 It does not show on Finder It does not show on System ...
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1answer
29 views

Prevent Mavericks from generating new volume name for external drive

I have an external HDD, formatted exFAT, I believe. Whenever it is re-mounted, it gets assigned a new volume name (e.g., "MyVolume", "MyVolume 1", "MyVolume 2"...). As far as I can tell, this happens ...
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2answers
145 views

Format External Disk in FAT, NOT FAT32

I have an external device which mounts as an external drive and which I must format in FAT, not FAT32, for use elsewhere. Is there a way to do that from Snow Leopard?
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1answer
158 views

Two different USB 3 HDD docks - disk partitioned on one not usable on the other

I have two different 3TB SATA hard disks: a Toshiba DT01ACA300 a Seagate ST3000DM001. I also have access to two different USB 3 HDD docks: a Connectland DOCK-CNL-YJK3519-V3+ES a Focus SATA + IDE ...
2
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0answers
444 views

Disk Utility: Invalid Disk Label @ cksum mismatch

I have a WD external hard drive. I've been running the routine tests to make sure all my stuff is safe lately. In Disk Utility, I did Verify Disk on both the disk itself as well as the main partition, ...
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1answer
57 views

Why is “my passport air” suddenly not coming up as recognized by my macbook air? The light is on and it is vibrating as it usually does

I had another external drive transferred to this one with all my data on it and now I can't access it. What can I do to access the drive and data?
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1answer
709 views

MacBook Air running Yosemite won't shut down when external HDD connected

My MacBook Air won't shut down when an external hard drive is connected. The screen goes black, and the mouse pointer is still there. I think this started happening when I upgrade to Yosemite. Any ...
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2answers
85 views

How to find recently connected external disks?

Bit of an emergency so any help really appreciated. I am trying to work out whether or not the there is a way for me to see the details (specifically names) of external drives that have been ...
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1answer
440 views

Is it possible to backup iOS devices to an external drive?

I have a new Mac Pro with a small 256GB SSD. I have a larger 2TB drive that I run backups to. My girlfriend has a MacBook Air with a tiny 128GB SSD. Our problem is our iPhones have 50GB of music, ...
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141 views

WD external hard disk is not readable on Macbook

My WD My Passport was readable(not editable) on my Macbook..After going through some forums I installed NTFS free software to make my disk editable but on installing this my Hard disk is not even ...
0
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1answer
70 views

I have to repair my external hard drive each time I plug it?

I have a 2009 320GB Toshiba Hard Drive, and every time I plug it to my macbook pro 13inch Retina, I have to go to Disk Utility -> Repair Disk. Why is that? Whats the solution? Please help!!! Thanks
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1answer
58 views

Data partly lost or hidden on external disk

I have an external disk connected to MacBook via USB. From time to time the system alerts that the disk is unreadable, but sometimes it seems to connect and I can browse it in Finder, and even open ...
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1answer
35 views

Do I need to keep any cautions in mind when transfering an external SSD into my Macbook?

Hi I am now successfully running my MacbookPro off of a bootable external SSD (which is runnung Yosemite and onto which I cloned my whole system) and I would like to switch it out with the old HDD ...
0
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1answer
117 views

Hide backup drive from guest user

I have a backup drive connected to my mac mini, which I just upgraded to yosemite. I created a guest account, and unfortunately, the guest can browse the backup drive. Is there an easy way to prevent ...
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0answers
3k 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 ...
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40 views

Can I Time Machine An External Hard Drive?

I have an external hard drive that I have time machined before but its not current. However, my old iMac has broken down but the hard disk is still ok. So I took out the old hard disk & start up ...
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1answer
130 views

Cannot change permission of external ExFAT HDD folders

I can't change permissions of external HDD folders The file system is ExFAT and I am on OSX. Here is what is shown when I do ls: drwxrwxrwx@ I don't even understand what @ means at the end. Is it ...
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1answer
49 views

Strange background color on external drive folder names

I had folder on local Mac drive. And when I ls on terminal I see this: But when I copied on external HDD (FAT filesystem) I see this when I call the same ls command in the same directory: What ...
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2answers
265 views

Cannot read external hard drive after installing Linux?

Please help. I wanted to install linux so I follow this guide: http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx I used my external hard drive to do this but then after I finished ...
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2answers
2k views

OS X Yosemite Improperly Ejecting External Devices [closed]

I have a WD My Passport Ultra and I had it plugged into my MacBook Pro 15" Mid 2012 Model and I had just closed the lid and it went to sleep. Then I came back hours later and when I opened it a ...