Questions tagged [external-disk]

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

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139 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 ...
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1answer
828 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 ...
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1answer
288 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....
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1answer
201 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 ...
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1answer
695 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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1k 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 ...
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109 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 ...
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2answers
466 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 ...
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18 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 ...
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1answer
2k 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 ...
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1answer
60 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 ...
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2answers
353 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 ...
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1answer
28 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 ...
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1answer
36 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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75 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. ...
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129 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. ...
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1answer
144 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.
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2answers
60 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 ...
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307 views

Two computers, one External Hard Drive, two different operating systems with Time Machine okay?

We have two computers, an old MacBook Pro running El Capitan and a 2014 Mac mini running High Sierra. They each need about 600-700 GB to back up. I purchased a 2 TB external drive and was just ...
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3answers
107 views

How to work with 2 Applications folders?

I have an internal 250 GB SSD. this drive was filling up and I bought an external 4 TB external hard drive. My Applications folder on my SSD was taking up a lot of space so I decided to create an ...
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1answer
946 views

Bootcamp install on external, partitioned HDD reboots to Boot Recovery Assistant

I have followed this guide: https://9to5mac.com/2017/08/31/how-windows-10-mac-boot-camp-external-drive-video/ When I select EFI Boot from my Samsung M3 portable drive it reboots to the boot recovery ...
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1answer
228 views

How can a Mac split a single backup to two independent, external drives

I have been asked to perform an emergency backup of a device showing signs of HDD failure. I'm being provided with two individual external hard drives to accomplish this. Each drive is independently ...
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1answer
114 views

Using Apple Remote Desktop to view External HD files

Can I have my Macbook Pro offsite access my other Macbook Pro at home using the Apple Remote Desktop? (Or if you know of another better way to access, let me know.) If so, can the Macbook Pro at ...
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1answer
1k views

How to edit files on/copy to an NFTS external hard drive? [duplicate]

I've got a WD MyBook external hard drive formatted in NTFS with files on it. How can I edit files already on it as well as paste files to it? I've installing Mounty and when I try to re-mount it read-...
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83 views

Encrypted Disks don't mount in Disk Utility and Finder on OS X 10.9

I've encrypted several external USB disks, both Time Machine and regular. On my MacBook running OS X 10.12, I plug it in, a dialog pops in the Finder asking for my password, I type the password, and ...
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2answers
1k views

Unable to eject disk images or drives in High Sierra

I am running a MacBook Pro Early 2015 13" on High Sierra 10.13.5, and keep getting the "X disk cannot be ejected because one or more programs might be using it" message, when apparently there is no ...
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15 views

2009 iMac harddrive getting error 36 and not mounting properly

I have the hard drive out of a 2009 iMac. It's inside an enclosure and I'm trying to move the entire hard drive over to a new external drive. The hard drive mounted, but then I realized I hadn't ...
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152 views

External HD not showing up in Finder

I have an external hard drive, been working perfect as an extra backup. Now all of a sudden I cant see the content in Finder. I can't eject it and it's greyed out in Disk Utility. Any idea what I can ...
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40 views

Netgear R6220 + WD Elements to use as Time Machine

I want to use a new drive I obtained on sale as a networked Time Machine drive, but I am having difficulty configuring it to do so. I had thought (and perhaps I am wrong) that I could format my new ...
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46 views

External HDD not properly recognized

Today I connected my external HDD (WD elements) to my MBP and it was not recognised properly. The disk has two partitions, one an NTFS partition with some files and the other a Veracrypt partition. ...
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1answer
207 views

How to fix my external hard drive after connecting it to a pc? Possible USB 3.0 to USB 2.0 problem?

I bought an external hard drive, connected it to my MacBook, put some stuff on it, connected it to a pc, tried to transfer video files to a friend (pc owner), spinning wheel of death, friend pulls out ...
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41 views

Error Code -36 Copying Files from Windows NT Formatted Drive to exFAT Drive (select files only)

The gist of the problem is this: I have a large amount of video and audio footage that I need to consolidate from multiple drives - namely this Windows NT Filesystem formatted Seagate Expansion Drive ...
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2answers
1k views

Is it safe to add other files on the same drive that Time Machine uses as a backup destination?

I have my back-up data & storage all on the same partition (No partitioning was done) on an external HDD? Could time machine overwrite other data or does this arrangement keep all the data on the ...
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1answer
132 views

How do I copy my pics on icloud to an external hard drive?

I'm trying to figure out how to back up my pictures on iCloud to an external hard drive. Do I seriously have to do this one pic at a time?
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2answers
264 views

Time machine external disk ejects before backup is complete

I'm creating the first full backup on a new 3TB drive. Time reports just over 1TB will be needed. Drive returns a disconnect message and time machine stops after every 100-300mb. My Mac runs High ...
2
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1answer
587 views

time machine runs very slowly, then stops

I've been using Time Machine with my MacBook Pro without issues for some time, however, I’m now having a problem that I haven’t had before: when connecting the external hard drive on which backups are ...
2
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1answer
571 views

Does high sierra eject external USB drives upon logoff?

I have both a USB hub that has a flash USB and an external USB drive. A family member often pulls it out without ejecting, and I'm trying to ease the effects of that. I put an AppleScript on the ...
2
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1answer
84 views

I removed my external drive icon on my macos, how do i put it back?

As per title, I decided I wanted to remove my external drive icon (the one that is shown, usually, on the desktop) on my mac, but now I'm not able to put it back. The problem is not due to the finder ...
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1answer
421 views

WD external hard drive got disconnected without eject

So my WD External Hard Drive wasn't ejected properly. It shows up in Terminal and Disk Utility, however it is unable to mount. When trying First Aid, I always get these results: Repairing file system....
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109 views

Rescue Fusion Drive

Local Apple support suggested me to change the 2 TB Seagate Fusion drive with a 2 TB SSD to increase speed in my 27" Retina iMac with macOS Sierra installed. I had a full backup done with Carbon Copy ...
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176 views

How to fix Seagate backup plus not readable on Mac? [duplicate]

I never had a problem with Seagate backup plus for Mac desktop until now. I connected it, and it keeps saying "disk not readable". I have only used it on one device. I have options to initialize, ...
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3answers
509 views

Why would my external USB3 drive (a Drobo) keep getting disconnected?

I have a mac mini (Mid 2011) running High Sierra (10.13.4) that I've been trying to use a home server. I'm not sure what the cause is, but my external USB drive (a 3rd-gen 4-drive Drobo) keeps ...
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1answer
65 views

How to find if a USB has been plugged in on a certain date? [duplicate]

Starting from this great script offered by Daniel Azuelos cd /Volumes/suspicious_USB /usr/bin/sudo find . -atime -21 -exec ls -dluT {} \; How is it possible to modify it in order to find if a USB ...
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2answers
3k views

Is “Ignore ownership on this volume” reversible?

In other words, does it just hide the permissions on file, or change them? More specifically, if you have a volume with file on it that have different owners and you check Ignore ownership on this ...
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2answers
8k views

How do I dismiss many multiples of the “Disk Not Ejected Properly” notification in macOS?

Today I'm dealing with the following problem: Is there some way I can get rid of these without spending my entire day clicking, short of Homer's Drinking Bird? Note: This is not a duplicate of ...
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0answers
22 views

External Filevault disk permissions don't match users on migrated computer

I created a (bootable) backup disk for use in Carbon Copy Cloner and applied Filevault 2 following the CCC instructions. I am using the backup disk to transfer the files to a new computer. The old ...
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3answers
1k views

Connecting a FireWire 800 external hard drive to MacBook Pro early 2013 through its USB 2 port

I need to connect a FireWire 800 external hard drive to a MacBook Pro early 2013 through its USB 3 port. I would have done so through the Thunderbolt port but the adaptor for that is too expensive ...
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2answers
50 views

Mid 2010 Mac Pro 5.1 Drive Is Failing

It still works but am afraid it will unexpectedly die. I bought a new drive that's compatible but don't know how to transfer data from old to new after I install the new drive. Can I use Time ...
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2answers
2k views

MacBook Air unable to write to external Harddisk

I have a MacBook Air with mac OS Version 10.13.4 and I am not able to write to external disks formatted in format "Windows NT File System (NTFS)". It is definitely not an issue with the drive as I ...
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1answer
1k views

Failed High Sierra update, can't mount drives, how to recover files?

The issue is with Apple MacBook Air "Core i5" 1.6 13" (Early 2015). It had not been backed up in a while but an update to High Sierra was attempted. The update failed and now a regular boot or safe ...