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

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Macbook often won't shutdown if external not manually unmounted first

If I don't have my external hard drive plugged in, or if I eject it first, the computer shuts down very fast thanks to my SSD. But if I don't eject it first, it either takes much longer to shut down ...
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1answer
18 views

How to disable Time Machine for an external hard drive

My wife has a MacBook Pro and two external hard drives; both of which currently contain a Time Machine backup of her MacBook Pro hard drive. Now she wants to "turn off" Time Machine for one of her ...
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1answer
28 views

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
9 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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0answers
16 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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24 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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1answer
28 views

Reconnect an external HDD after proper ejection [duplicate]

After I "properly eject" an external HDD or USB stick, can I "reconnect" it without physically unplugging it?
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1answer
27 views

Disk Utility reports “missing thread record” on my external HDD

I have an external 500 GB HDD that's about five years old. I just turned it on and it made a bunch of clicking noises and failed to spin up immediately, though it did so after a few seconds. To be ...
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29 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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1answer
54 views

Why do external drives spin up for webpage rendering?

I recently went to some webpage in Chrome and noticed that my external harddrive had to spin up before the page would render. Does anybody know why OSX does this? I've noticed it in a few other ...
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1answer
95 views

Can I have two Time Machine partitions on one hard disk drive?

I know that someone can use a partition on a hard disk drive for Time Machine, but is it possible to specify more than one partition on a single drive for this purpose? The scenario: My partner and ...
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1answer
467 views

External Hard disk 500 GB free but can't copy 8 GB data

I have WD external hard disk, which was working fine. Its MS-DOS formatted. I have downloaded a file in .mkv, which works fine, and isn't corrupted. Upon copying the 8 gb file, it says "The file is ...
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1answer
53 views

Install 10.8 on an external drive from 10.9 [duplicate]

I have OS X v10.9. I downloaded v10.8 installer from the AppStore in order to install it on an external drive. However, when launching the installer it says that it can't be installed on this computer ...
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48 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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1answer
36 views

Upgrade to Mavericks from an external HDD

I have Snow Leopard on and external HDD. Is it possible to boot form the external drive, and install Mavericks on the internal drive via the Mac App Store?
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3answers
107 views

External drive performance for iMovie

I love iMovie and used it to create several projects on my wife's iMac. I'd like to move all my iMovie resources (from an HD camcorder and my iPhone) to my Macbook Air but I don't feel there is ...
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1answer
83 views

How do I stop my external hard drive from using all my RAM?

I'm running OSX Mavericks, and have an external 500Gb HD connected via firewire. I have 24GB's of RAM, and fairly often my RAM usage will spike to 23.95 GBs in use and literally leave me with only 50 ...
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4answers
107 views

Is It Possible to Install OS X on an External Drive for Use with Any Mac?

My dad would like to encourage me to learn how to program in C++, but he doesn't want anything that could possibly go wrong with any of the computers that we own while I am doing so to affect any of ...
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1answer
28 views

Time Machine: Mobile incremental Backup

Imagine I do backups using Time Machine at home just like everybody else. But as I travel often and of course also work on the road I also need to have a mobile backup solution. I thought about the ...
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1answer
40 views

External Drive doesn't want to live in sidebar

I have a remote hard drive (afp/smb) that won't live in the finder sidebar. Actually I have two, and one simply will not live in the finder sidebar. Everything else seems to function normally, ...
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262 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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2answers
362 views

External drive HD WD 3T My Passport with Mavericks suddenly unmounts

I've a problem with my external hard drive, a Western Digital 3TB, with my Mac running OS X 10.9, Mavericks. When my hard drive is linked to my MacBook Air and, I work with it, the drive suddenly ...
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1answer
51 views

Need to install SL on Mavericks external drive

I have a 2012 iMac 21" with the latest Mavericks. I also have a need for a bootable Snow Leopard external drive so I can run Boot Camp with XP. I purchased a Snow Leopard Retail install disk only to ...
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61 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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1answer
120 views

Using rsync to copy data from one Drobo (NTFS) to another Drobo (Mac OS Extended (Journaled))

I have been using Windows 2008 in Parallels on my Mac Server to serve up files to my Windows clients on the network with a USB attached Drobo (NTFS). Now I want to move these files to my Mac Drobo ...
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1answer
61 views

RW mounted NTFS drive not shown in finder

I mounted my NTFS drive in OSX with UUID=<some-uuid> none ntfs rw,auto,nobrowse in fstab, but finder does not show the drive. I can do open /Volumes/drivename and will see the files and can ...
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39 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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1answer
50 views

Does the 27-inch iMac (MC511LL/A) have a true thunderbolt port or just a mini-display port?

I'm trying to connect a thunderbolt external drive to my Mac: http://www.everymac.com/systems/apple/imac/specs/imac-core-i5-2.8-27-inch-aluminum-mid-2010-specs.html However, the disk is not being ...
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1answer
50 views

Difference in disk usage MS DOS vs Extended Journaled

Searches on Google and the Apple forums didn't get me any answers or couldn't clarify this for me, hence this question. I have two following external USB hard drives connected to my iMac: "Lacie1" ...
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3answers
168 views

Almost 450 MB consumed on empty external hard drive

I have an old Macbook Pro with 500GB hard disk. The MBP stopped working. I am now using that hard disk as external storage. After erasing the data (using Disk Utility), I see that almost 450MB is used ...
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185 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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43 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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53 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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1answer
69 views

Can i stored iMovie projects and files in an NTFS external drive?

I'm backing up manually my computer with the data I want to keep. I've already backed up iPhoto library in a a Mac OS Extended (Journaled) partition as it seems is the only way to store it properly. ...
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1answer
231 views

How do I erase partitions on a drive that's been protected with FileVault 2?

I want to completely wipe a USB thumb drive, re-partition it, and reformat the partition as ExFAT, not JHFS+. Unfortunately, I used FileVault 2 on it when I made it and that seems to be preventing me ...
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1answer
265 views

How to run programs from an external hard drive on MacBook Pro?

I need to know how to install and run applications from an external hard drive on my MacBook Pro.
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0answers
81 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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2answers
1k views

Access disk attached to Airport Extreme over internet?

According to Apple's product page, the Airport Extreme... "...can turn your external USB hard drive into a secure drive you can share across your Wi‑Fi network and access securely over the ...
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2answers
94 views

How to find file system of external hard drive?

I have plugged external hard drive. It does not show in Normal Mode. I can see its Type Name and Identifier thru terminal. I want to find the file system of the external hard drive. I want to format ...
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1answer
470 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 ...
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2answers
271 views

Which format for external disk for performance?

I'm using OS X Mavericks and just got a new external hard disk. I don't need to share it with a PC (so no need for FAT) but I do want it to have better I/O performance. I'm a bit confused by the ...
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1answer
120 views

how to write to a windows formatted disk from OSx?

I have 4 external hard disk formatted on windows in NTFS, but they are lying unused since I bought mac, so I am looking forward somehow I should be able to write to those disc without having to format ...
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22 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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1answer
552 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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2answers
45 views

USB3 HDD on an USB2 port vs thunderbolt

I need to buy a new HDD (>2To so no SSD solution, unless you know a very attractive offer) and I was wondering about performance knowing this : MBP 2011 (2 usb 2.0 - 1 Thunderbolt); 7k2 HDD. What ...
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1answer
36 views

On external drives

When I shop for third-party external hard drives I'm struck by how much more expensive the drives that are advertised "for Mac" are, when compared to those without such qualification. My question is: ...
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2answers
210 views

Time Machine - multiple backup destinations for a “separate weekly”

I have a client that I'm setting up Time Machine to backup his Macbook Pro. He's running OSX Mountain Lion, but soon to upgrade to Mavericks. It has been backing up using Time Machine and an ...
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1answer
1k views

Can't restore to backups after removing disk in Time Machine

I've been using a WD 2TB HD for the last two months to handle my Time Machine backups for my Macbook Air. Yesterday, I wanted to set it up to handle backups through the network. In the Time Machine ...
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0answers
110 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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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 ...