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Questions tagged [external-disk]

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

2
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1answer
31 views

Recognize externel hard drive as internal

I need my 2018 Mac mini (Mojave) to recognize the external hard drive as an internal one so I can use Bootcamp and install Windows on it. I tried the answer in "How to let MacBook Pro recognize my ...
0
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0answers
13 views

How to stop my external (USB) hard drive from sleeping/parking when not used

[MacBook Pro mid-2014 retina, Macos Mojave 10.14.1] I have a 3TB WD Elements (5400rpm) usb3 hard drive plugged into my laptop which I use for storing larger files since my laptop only had 500GB. I'...
0
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1answer
45 views

My External Hard Drive's format changed to FAT16 without any reason

I have an ADATA HD710 1TB external hard drive which I use mostly in my Mac Mini 2011 and I have created two separate partitions for my drive. One of the partitions has APFS (Apple File System) format ...
0
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0answers
15 views

mount external drive not ejectable

I mounted without any problem an external USB drive and I can see on my Mac. I wonder if there is a way to let system identify it as "internal" drive and not as USB plugged device. It's a low profile ...
1
vote
1answer
26 views

How do I move files to external HD via Terminal?

I am trying to move a couple of folders from my Desktop to an external Hard Drive as Finder is not working. When I type command mount, I get the HD listed, but when I try to use command ls or cp I ...
0
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1answer
11 views

Macbook Pro can only startup with external hard drive connected [duplicate]

Here are the facts: 13 inch, mid 2012 It gave me the grey screen with the flashing question mark folder one day, and I got an external hard to install the MAC OS X operating system like the apple ...
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0answers
21 views

My Passport Ultra transfer speed

I bought this device to replace an older HP external drive. This WD drive comes with a USB 3C cable and a USB 3 adapter. Im using it on a MPB - USB3 port. WD will only give me "theoretical" speed ...
1
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1answer
19 views

Is it a bad idea to daisy chain to an internet router through an external drive?

I'm interested in setting up a wired connection to my router, in order to achieve a faster internet connection than I can get from built-in 802.11n. My 2012 Mac Book Air has only one Thunderbolt 1 ...
0
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0answers
10 views

Best way to copy FILENAMES, MODIFIED DATE & SIZE in multiple nested directories on external drives? [duplicate]

I want to create lists of ALL FILENAMES, MODIFIED DATE & SIZE in multiple NESTED directories on some external drives? I am a long-time Mac user but completely ignorant of UNIX-OS X command line ...
0
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0answers
31 views

Mac asks me to run Disk Utility in Recovery, while in Recovery

I have a WD EasyStore Drive, and for some reason it was bugging out with Time Machine today. I decided to run First Aid on the drive and it found a corruption it wanted me to fix via Recovery mode. ...
1
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0answers
13 views

How can I mount a removable device as un-ejectable [duplicate]

I have a Micro-SD card which I keep permanently inserted in my MacBook Pro using a nifty Mini-drive. I doubt it should matter, but this is a 13" early 2011 MacBookPro, running High Sierra (hardware ...
2
votes
1answer
97 views

Can’t mount external drive - Mojave

came up here after a lot of looking around. Even seen a couple of examples of my issue, JT not sure what to do. Have tried a bunch of stuff and still cannot not get drive to mount. Apple says to wait ...
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0answers
38 views

Disk Utility fails to erase external drive

The other night I was working with my 6 month old MacBook Pro with a 6 month old external drive attached. I shifted around in my seat and the external drive slipped and abruptly disconnected from the ...
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0answers
29 views

Removed external disk stuck in diskutil list multiple times

I've ran into an issue on my 2018 MBP running 10.14.2 where an external disk still shows up in 'diskutil list' after eject and removal. The external disk does not contain anything TimeMachine related, ...
3
votes
1answer
37 views

I tried activated the option to partition a disk, instead all my drive data disappeared in a few seconds

I read online that there was a command line to activate the partition option on Disk Utility: diskutil partitionDisk disk4 1 GPT HFS+ newdisk Which is just supposed to unlock the possibility to ...
1
vote
1answer
31 views

Can't mount back up drive on MacBook Pro

I have an ADATA Classic CH94 back up drive I've had since 2012, along with my MacBook Pro. However after a minor Apple update I did through the App Store (I'm currently still on macOS High Sierra) I ...
9
votes
4answers
1k views

Can I re-format OS X drive without removing it from my MacBook Pro?

I've got a mid 2012 MacBook Pro (non-retina) with a removable HD (Machine A). I want to perform a clean install of OS X El Capitan 10.11 on the HD, for which I have an install USB stick made. ...
1
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0answers
38 views

Eject an external disk after improperly disconnecting it

I have a repeatedly run into this problem. On the one hand we could say, "always remember to eject your external drives before removing them". However, it's a matter of fact that I will forget, at ...
2
votes
4answers
88 views

'The disk you inserted was not readable by this computer' when connecting external hard drives

I have a Synology NAS that has failed and I won't be replacing it. It had two 4TB Western Digital Red hard drives. I've bought a dual hard drive disk reader on Amazon and inserted both hard drives ...
4
votes
1answer
46 views

Why does my Time Machine external drive unmount overnight after upgrade to Mojave?

I use a LaCie Quadra RAID drive as my Time Machine drive. It's directly connected to the USB socket on my iMac (Retina 5K, 27-inch, Late 2014, macOS 10.14.1). It's been fine for years. It may be a ...
1
vote
2answers
244 views

Move macos user home folders on external drive

I got a shiny new Mac Mini but couldn't afford a 1TB internal SSD to hold all my stuff, so I'm testing ways to leverage an external disk for user storage. I know I can point Photos and iTunes to ...
0
votes
1answer
12 views

Can't update boot security on new Macbook Pro

I am trying to boot from an external device and it is asking for an administrator password. The machine is new and didn't have a password so I created an admin password and it still won't allow me to ...
0
votes
1answer
54 views

Check automatically if a drive is mounted

I'd like to automate my family backups, specifically I'd like to run a shell script (with rsync) when an external drive is connected. Since it's a family thing, it should be also sort of GUI driven, ...
4
votes
1answer
46 views

What data repair and recovery options exist for a missing APFS Volume?

I am using an OWC Envoy Pro enclosure with an Apple Samsung SSD out of a 2015 MacBook Air. It's plugged into a 2017 iMac 27". The External SSD) randomly gets ejected and as a result of this random ...
1
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0answers
21 views

Time Machine for reformatted external FileVault drive: how to explore files in backups; make future backups incremental from there

After the latest backup of an FileVault-encrypted SD was made on TimeMachine, I manually moved the its contents to another disk, then reformatted it, again as encrypted volume, and moved the file ...
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0answers
239 views

External Hard Drive Won't Mount (weird case)

Background I tried using the Disk Creator program to create a bootable flash drive out of my external hard drive. When I was creating this installer, I got an error. It was at this point my external ...
0
votes
1answer
102 views

Disk ejected but still show up in Disk Utility?

I have this external (USB) drive that can't seem to be disconnected correctly. Whenever I eject the drive, it won't disappear from Disk Utility. Afterwards when the drive gets re-connected again, it ...
2
votes
1answer
94 views

How to create a bootable disk for an older Mac? [duplicate]

The file system on an older Mac mini (early 2009, latest supported OS 10.11) got corrupt, and disk utilities ended up in an infinity verify-can't-repair loop. Thanks to a insightful tip I could mount ...
3
votes
1answer
69 views

Mac won't access 4 TB Seagate USB drive

I don't see it in Finder, I don't see it in Disk Utility. I don't see it in the system profiler. diskutil -list /dev/disk0 (internal, physical): #: TYPE NAME SIZE ...
1
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0answers
139 views

Multiple “Disk not ejected properly” messages during sleep

When I hook up a WD My Book 3TB external hard drive to my 2016 MacBook Pro via a third party USB-C to USB-A hub and let the computer sleep during the night, this is what I’m greeted with the next ...
2
votes
0answers
55 views

Recover data from external hard drive partition Mac OS X

A couple of weeks ago, I dropped my external drive while a program was writing data to it. The drive seems to spin up fine, without beeps/scratches. The drive also has EFI and Recovery partitions. One ...
0
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0answers
27 views

How to convert external drive from Apple Partition (APM) to GPT without formatting or erasing its contents

The title is self-explanatory. My Google-Search-Fu only returns results where the conversion undergoes a destructive process. Backing up the contents and subsequently restoring them solves the problem ...
2
votes
1answer
340 views

Connect an external SSD (USB Type-C) to Mac Mini (mid 2011)?

I have a Mac mini (Mid 2011) and I want to use an external SSD (Samsung Portable SSD T5) with it. Now the problem is that Mac mini (Mid 2011) only has: Thunderbolt port (up to 10 Gbps) (not ...
0
votes
1answer
133 views

Freeing up space on external hard drive after deleting time machine backups?

I had a external hard drive in use for Time machine, but now use a different one, so wanted to free up the space. I removed the HD from the Time machine backup drives, then deleted the Backups....
1
vote
1answer
58 views

Recovering a RAID 0 volume

In the process of upgrading a 2 4tb disk RAID 0 array from an iffy LaCie drive to a faster/more reliable USB enclosure I have lost data. The backups take a long, long time to restore so I'm hoping to ...
2
votes
1answer
82 views

external hard drive still shows in disk utility after it was removed

I unmounted and removed my backup disk called TimeMachine, but it still shows up in the disk utility app. I tried running $ diskutil unmount /dev/disk3s2 and $ diskutil unmountdisk /dev/disk3 ...
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0answers
199 views

How far is my Time Machine “preparing backup” step?

I want to do a Time Machine backup and it's not the first time I do it in this external hard drive, so Time Machine is doing the "preparing backup" step since a few minutes. As it's been quite long I ...
2
votes
0answers
44 views

Can I put my Photos library on an external hard drive also used for Time Machine?

So, I am new to Macs, and I have a MacBook Air. I've got lots of phots to import into the Photos program, so I decided to stick them all on an external hard drive. I have also used that hard drive ...
3
votes
2answers
221 views

Can't get write permission on external hard drive when exporting from Lightroom

A few days ago I bought a new 2018 MacBook Pro which is running macOS High Sierra 10.13.6. I have been a Windows user till then. After I edited my photos on the new Mac in Lightroom, I plugged in my ...
1
vote
0answers
16 views

Can I eject and remount an external drive Time Machine is backing up?

If I include an external drive in my time machine backup, can I be sure it will always be backed up any time it's mounted? What if I dismount it and then later remount it? Will Time Machine gracefully ...
1
vote
1answer
546 views

Slow write speeds with APFS encryped external SSD

I bought an external SSD with a USB 3.1 gen 2 enclosure. I'm on macOS 10.13.6 with a MBP (late 2013). Using APFS I get write speeds of around 390–405 MB/s. So far, so good. However formatting the ...
1
vote
1answer
39 views

What is the most efficient and reliable method for transfering/copying a large number of files from one external hard drive to another? [duplicate]

I have an NTFS external hard drive with ~300GB of data on it, and I'd like to be able to start writing to this drive without having to use any third-party software or other hacks/workarounds. I've ...
3
votes
2answers
147 views

External SSD with OS installed not working?

Four months ago I bought an external SATA case with USB-C compatibility so I can install my iMac OS there, did this because my iMac has built in HDD and was so slowww.. With the case I started using ...
1
vote
1answer
26 views

External HDD (Apple_HFS) not recognised by Finder under Sierra 10.12.6

my external HDD (used for TM backups and some other stuff) suddenly stopped working with my MBP 2017 (Sierra 10.12.6). I can see it only through the Terminal (see screenshot 1) DiskUtility won't load ...
1
vote
1answer
24 views

macOs High Sierra External Hard drive problems

I have a Toshiba DTC810 external hard drive that was working properly for almost a year. Then, suddenly, yesterday I plugged the drive into the USB port and it wasn't working. I tried to plug him into ...
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0answers
55 views

Upgrade a USB install of Sierra to High Sierra. Possible?

I was recently given a Macbook Air 2012 with a malfunctioning SSD (common problem in this model -- SSD is recognized as 33 kB SandForce disk), so I decided to install and run macOS from a USB stick. ...
0
votes
0answers
12 views

Mac Mini screwy, disabled Time Machine, worked great… bad external HD?

My 2012 Mac Mini 2.5 GHz running El Capitan has been screwy and sluggish recently. Randomly, CPU percent jumps above 100% for the Mail app and there are random hangs of apps like Safari. Did some ...
1
vote
0answers
43 views

PCMCIA USB 3.0 card for Mid 2010 Macbook Pro

I had an 17 inch Mid 2010 Macbook Pro (MacPro6,1) that had 3 USB2.0 ports, and a 34PIN expressCard slot. I heard one way to get USB3.0 I/O for this machine is to use a USB 3.0 PCMCIA expressCard. ...
2
votes
1answer
35 views

Using an external HD as my applications folder

I need to install more applications - can I use my external HD (samsung T5) and add an additional applications folder? I have loads of space on it and it the speeds are great.
2
votes
2answers
29 views

Please help: Win7 on external FireWire drive results in “No bootable device - insert boot disk…” error

I'm trying to get Win7 working from an external FireWire drive (Macbook pro mid 2009, OSX El Capitan). I've tried the two tutorials below; the installation seems smooth either way and mac recognizes ...