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

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Hard Drive Formatting Error in Terminal

I have tried formatting and partitioning this brand new hard drive and it has failed on multiple computers using multiple methods. It is a LaCie Porsche Design 4TB hard drive. Here is the commands I ...
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1answer
306 views

can I point my Pictures folder to a folder in an external hard drive?

I would like to save some space on my laptop and to do so I was thinking of moving my Pictures folder on an external hard drive. As OSX doesn't want me to mess around with the main folders in my home, ...
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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 ...
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1answer
8 views

Where is the temp file created by Disk Utility during erasure of free space kept on a non-boot volume?

I used Disk Utility to perform a secure erase of free space on an external non-boot drive, and ran into a problem and the process was aborted. I see that the file is still there because the drive ...
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1answer
548 views

Recover Deleted Files on Mac OSX [External NTFS]

I have accidentally deleted some files on my Mac OS X Mavericks. Actually, I was trying to burn an .img file to my flash drive which was located at /dev/disk1 (at the same time I had connected a NTFS ...
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1answer
261 views

Automatically mounting an external Firewire drive after reboot, without login

I have an iMac that is running Mavericks with OS X Server. I have the Time Machine service set up on that machine, referring to a directory on an external drive that is connected via Firewire. Other ...
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0answers
78 views

Serious problem with Time Machine (external HDD)

My Mac Mini (late-2012) got repaired by Apple, and the hard drive was reseted. Now I want to restore the Mac Mini from my Time Machine Backup (on an external 1TB HDD), but it doesn't appear in the ...
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186 views

How do I (re)mount missing Firewire drives? Why do they vanish?

I have several Firewire drives that occasionally "go missing" even though they are connected to my Mac and powered on (the power light is illuminated). These drives do not appear in Disk Utility or ...
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1k views

Why can't I search files and folders on my external NTFS drive on Mountain Lion?

I have tried to re-index my external drive by removing it from Spotlight's privacy settings and putting it back there. I tried with mdutil in the terminal and I've got the following log: bb:~ bb$ ...
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15 views

iTunes library on usb drive connected to NAS not recognized anymore

I have my iTunes library on an external usb drive. I have no problem accessing it when it is plugged directly to my mac. I've recently bought a NAS device which allows me to connect a usb drive to it ...
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22 views

Raid two external hard-drives with read/write support on Windows & OS X

I have a USB 3 HDD enclosure that currently has two 1TB drives in it. I am looking at buying another external USB 3 HDD drive (not an enclosure). I am currently running the external enclosure with the ...
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42 views

How to get Mac App Store to stop thinking app is installed on external drive?

I ran into a problem where the Mac App Store said that a particular app (Numbers in this case) was up to date, but whenever I launched it I would get an older version. I finally did a search across ...
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0answers
21 views

Lacie Hard Drive converted itself to FDISK_partition from GUID_partition

I am running OS X 10.6.8 and my Lacie external hard drive converted itself from GUID_partition to FDISK_partition all by itself. How can I force the disk to mount just to get the files off of it? I ...
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0answers
109 views

WD My Book for Mac External HD won't boot any more

I bought a 3T WD My Book for Mac external HD and use it with my iMac with OSX 10.8.5. I partitioned it into 5 partitions. There are three 30G partitions and two larger ones. The largest is used as a ...
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255 views

My Lacie 'Rugged' external hard-drive no longer mounts

My Lacie 'rugged' 1TB external hard-drive has stopped working. I have always been sceptical about the USB connector cable, and more specifically where it joins the hard-drive. It just seems poorly ...
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0answers
124 views

How do I temporarily relocate my Time Machine backup files

I have a 1TB WD My Passport external hard drive that I've been using for Time Machine backups. I recently had an issue with it where I can't save to it anymore because it was corrupted. The way to fix ...
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321 views

RAID 1 array degraded, now not being recognized by OSX

I've got a pair of Seagate 3TB HDDs in a mirrored RAID 1 array using a Vantec NexStar MX two-drive enclosure. The setup has generally worked fine for the last four months, but lately I've noticed that ...
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0answers
103 views

Thermaltake External HDD USB 3.0 docking station gets unmounted

I'm using a Thermaltake External HDD USB 3.0 dual drive docking station on a Mac Air. I can see the files and seem to be able to copy small files fine. When I try to move a lot of files it gets ...
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260 views

Time Capsule external hard drive (usb)

I've added an external (Freecom XS 1TB) hard disk to my Time Capsule. However, this one's Mac Journaled (HFS+) formatted and does not display in Finder until I add a hub between the TC and external ...
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1k views

External hard disc not ejected properly - Mac OSX

I have a late 2012 Mac Mini running OSX 10.8.2. My iTunes library lives on an external Seagate drive, which has its own power supply. When my Mac Mini goes to sleep it will frequently wake up with ...
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511 views

Recover partition from NTFS drive with folder structure

I ran disk utility and looked for errors on a NTFS drive that was working fine but had been ejected abruptly after the computer was forced to shut down. After that a bunch of errors just appeared in ...
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260 views

Why do external hard drives stop working under very specific conditions?

I have a mid 2011 MacBook Pro 15" running Lion. I have seen this behavior across 3 different external hardrives, with varying manufacturers (2x Seagate, 1 Western Digital), different file system ...
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490 views

Trouble backing up my Mac (with Time Machine) to my WD passport

I just bought a 1 TB WD passport (external hard drive) to backup my Mac. I'm currently operating on a Mac OS x 10.5.8 (Leopard) with a 2GHz Intel Core 2 Duo processor. To format the drive I erased ...
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51 views

Are “ejected” drives still unlocked?

If I eject an encrypted (with FileVault) drive in Mountain Lion, has it been locked, or is there more I need to do (like physically unplugging it)?
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331 views

Airport Extreme sharing 1TB disk

I just bought an Airport Extreme thinking it was easy to share a USB disk. I'm very disappointed that this is taking so much time and still not working. The disk is 1TB NTFS formatted. It works well ...
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27 views

Time Machine, Drive not available

My friend has a MacBook Pro. I've wanted to do some backup on an external drive (Lacie 1TB) with Time Machine. Now, since the backup is in the external HDD, I can not use the internal drive of the ...
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43 views

External drive remain in stand by after Wake up

I have a WD My Book external drive connected to my iMac 27" via USB 3.0 The drive is initially in a stand by mode (drive doesn't spin, it's visible in disk utility). Now when backup script starts, it ...
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200 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/ ...
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58 views

Repurpose 2006 Mac Mini for Time Machine with external HDD

I have a Apple Mac mini "Core Duo" 1.66 from 2006 sitting around. I also have on order a CiT 3.5 inch USB 2.0 Dual SATA HDD Enclosure and was thinking of getting a WD Green 4TB Desktop Internal SATA ...
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38 views

Diagnose if corrupted volume is due to hardware problem

This morning when turning on a Mac laptop, it suddenly announced that an external backup disk (which was connected overnight) "can't be repaired". Disk Utility also says: Disk Utility can’t ...
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180 views

Install Ubuntu 13.10 on external firewire hard drive

I think I installed Ubuntu 13.10 on my external firewire hard drive (LaCie Rugged Triple) successfully, but I don't see any way to boot it. How can I solve this? I already have Mac OS X 10.7, Lion, ...
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51 views

External hard drive un-mounts and mounts itself

I have a Seagate external hard drive formatted to HFS+ that won't stay mounted for more than a couple of seconds however then mounts itself again only to unmount itself again and this keeps happening ...
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30 views

How can I prevent “Open With…” from accessing external drives?

Frequently, when I try to open the (10.9) Finder's "Open With..." menu, I experience a delay that appears to be due to connected FireWire drives. This delay is very long when the drives need to spin ...
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77 views

Follow up question to “is there a way to store mail on an external hard drive using apple mail?”

This is a follow up question regarding storing mail on an external drive. I'm running Mountain Lion (10.8.5), and I've been successful in moving ~/Library/Mail and ~/Library/Mail Downloads to my ...
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34 views

How do I reformat an iomega HDD that does not mount on my mac?

I have a iOmega MiniMax 2T linked to my Time Capsule, it is workinkg fine, except for the fact that i no longer can mount it to my iMac directly. I need to reformat it, but cannot use Disk Utility. ...
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203 views

Unable to create new partition with Disk Utility on external drive

I'm trying to create space on an external drive to clone my mac as a bootable volume with CCC. With Disk Utility I cannot modify it for some reason (probably because the same disk is used with Time ...
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128 views

rEFInd hangs on boot and shell launch on a Mac Mini

I have burned the rEFInd 0.74 USB image to a pendrive and booted a Mac to it. The boot manager's menu works fine and shows boot icons for all the OS installations I have but when I try and boot to a ...
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52 views

10.8.5: Resume Disk Utility after a standby

Is it possible to resume a partition resizing operation after the computer went in standby? I've (sadly, without a choice) used my girlfriend's MBA to resize a partition on a disk. I was on battery ...
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0answers
112 views

How do I diagnose non-operational external USB3 hard disk drives?

I have a certain combination of portable external USB 3 drives and cables that do not recognize my drive on my Mac Mini 6,2 running OSX 10.8.4. Changing the ports have not helped. In short - All my ...
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366 views

External Hard Drive freezes computer

My friend just called me up and said he purchased a new Seagate 3 TB External harddrive for his Mac Book Pro. And ever since he connected the harddrive, his computer was not able to run. After ...
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0answers
207 views

Western Digital MyBook Live failed; attempting to mount using USB>SATA adapter

Attempting to extract data saved to MyBook Live external disk after the ethernet interface failed. Any suggestions are welcome...please see below for diagnostic/troubleshooting information I have ...
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224 views

USB Thumb Drive on hub will not mount automatically

I have a 16gb SanDisk Cruzer Fit USB thumb drive. It's plugged into a powered hub, along with an external HDD - at the end of the day, I unmount (eject) the drives, and disconnect the MacBook from the ...
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0answers
38 views

Unable to abort disk decryption process

I got a 2T Western Digital portable drive as my main storage for my MacBook Air, with encryption enabled. Currently I used ~300G out of 2T, with maximum read/write speed of 30 MB/s (USB 2.0) I just ...
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0answers
51 views

unmounted external disk still appears under “devices” in sidebar

I have an OWC Mercury 500 GB hard disk partitioned into 3 partitions. Sometimes, after using it and unmounting it, one or more partitions still appear in Finder window sidebars under "Devices." Has ...
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4k views

How can I share an external hard drive with another Mac?

I have file sharing working between my iMac (10.8.3) and MacBook Pro (also 10.8.3), and I have an external "My BooK" drive (USB, MS DOS format) that I want to share. The iMac (where the external drive ...
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56 views

Recreate unknown users on crashed mac

About a month back one of our Macs crashed and we had to restore it. The computer had an external drive connected to it and all the data is still there. Though some of the users are "missing". If we ...
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1k views

The disk you inserted was not readable by this computer

I am getting a system message from Mac OS x 10.8.2 every time I power on my ICY DOCK RAID enclosure. I have followed the procedure in the manual to the letter. Installed two new 2TB HDDs > Changed ...
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287 views

External Harddrive is showing in System Information but not Disk Utility

My harddrive crashed last night and since then I have not been able to access it on my Macbook Pro. I've restarted both my computer and hardrive multiple times and I've experienced the same result. It ...
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0answers
2k views

How to backup external NTFS drive via Time Machine?

I currently have an external, HFS+ drive as my time machine storage that backs up my Macbook Pro Retina (Mac OS Mountain Lion 10.8.1). I also have another external NTFS drive (that I share with my ...
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608 views

Lacie external Thunderbolt drive not appearing in finder

I have an iMac running Mountain Lion and just bought an external Lacie Thunderbolt drive. It seems to work, but does not appear in the Finder. Does anyone know a fix for this?