Questions tagged [external-disk]

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

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NFS Mount Permissions on External Drive

I use Vagrant to manage Virtualbox instances and up until a few OS versions ago was able to sync drives from an external drive. (On 12.3.1 now.) Other vagrant users are also struggling with this, and ...
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One partition on external HDD not mounting, disk not ejecting

I have a problem with my external HDD from Seagate. It was working fine and I was transferring files from it to another external SSD on my MacBook Air (running macOS Monterey). However, the battery on ...
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External SSD Corrupted

I have been downloading a (legit) torrent file to my external drive, and left it overnight, then I woke up and found unable to connect to my mac anymore on its own, and I have been trying every ...
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If I put my Photo library on an external drive, can I still see the iCloud version when I disconnect the external drive?

For my Macbook, I'm considering moving photos to an external storage device. These photos are also on iCloud. If I remove the external storage device, will I still see the iCloud copy of the photos? ...
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Deleted files on external drive (exFAT) don't go to Trash

I have a Samsung T7 SSD formatted in exFAT as additional storage for my M1 Mac Mini (currently on Monterey), it's basically where I store all files that are not applications. Recently I discovered ...
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MacBook Pro does not recognize external, non-Apple devices (bluetooth, USB-c)

I am a new Mac user (MacBook Pro 13''). The issue I am facing is that it seems I cannot pair any non-Apple external device to my computer. In particular, I tried with: JBL wireless headphones, ...
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Normal for external SanDisk SSD 2T taking over 2 minutes to access files? Use not to

So I have a MBP 16" 2019 on Monterey 12.13.1 and using Sandisk external SSD drive partitioned Mac OS journaled and Windows ExFAT. Up to now when mounting the drive all loaded pretty quickly, ...
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External Hard drive not showing up in Disk Utility

I recovered a 160Gb hard drive (WD Scorpio Blue) from an Apple TV 1st generation. I thought I could use it for storage. But when I plug it in with an adapter, I don't see the drive show up in Disk ...
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Why will an APFS fail to mount, but HFS+ on same disk mounts successfully?

I got a new Western Digital 4TB MyBook a year ago that I was using as a Time Machine drive for my laptop. Just today, it suddenly failed to mount. I ran Disk Utility/First Aid on the drive which ...
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External hard drive formatted with FAT won't mount on mac osx

I think I messed up a an external disk (Toshiba Canvio) by incorrectly disconnecting it while it was being used and cannot get it to mount. When I plug in the drive, the light blinks and is being ...
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Finder corrupt files on copy to external ssd

Problem: sometimes finder corrupts my files when copying to external ssd. Reproduction methodology: copy via finder file to external ssd, then check this file md5 -q ~/Downloads/path/to/source md5 -q /...
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External Hard Drive No Longer Detected On Macbook Pro

My MacBook froze and I had the spinning wheel. At that time I had my 2TB external drive mounted of which I have never had problems during multiple uses. I had to hold down power and just restart so I ...
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External Disc (Western Digital Ultra for Mac 5TB) disconnecting it self, but still shown in finder. Have to restart or reconnect

I wouldn't write here, if I wouldn't try all I could until now. My new 5TB is randomly disconnecting and I'm unable to access the data or use the alias on it. Although it is still shown in finder, but ...
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WD Hard Disk not Mounting/First Aid not Running

My hard disk has decided to not mount anymore. It has a partition, one I use for Time Machine and the other I use for storing files. This is what diskutil list looks like. Is my work all gone? ...
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Can I test multiple disk simultaneously? (In disk Utility or a third party program)

For example, if I have multiple USB drives, an SD Card, an internal SSD, and multiple external SSDs and HDDs connected to a mac, I would like to save time and run First Aid/Repair/Erase/etc. on ...
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I can view folders on my external harddrive but not files

Using a Macbook Pro, 2015, system 10.14, I have an external harddrive and when I plug it into my laptop the folders will show up in the Finder but not the files. But this only happens some of the ...
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Change the duration of "Put hard disks to sleep when possible"

In general, the "Put hard disks to sleep when possible" function is very helpful to extend the hard drive's lifespan, but in large, it becomes a problem. Due to how hard drives work, if you ...
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How to connect a USB-C drive to an iMac with Thunderbolt ports

I have iMac 27" late 2014, running 10.14.6 OS. It has 2 TB2 ports. Wanting to connect a hard drive with USB-C only output connection. I need to get from USB-C from the drive to my iMac via TB2. ...
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Mac stops seeing external hard drives

My MacBook Pro (2017, 13", 2.3 GHz Intel Core i5, Mojave) suddenly stopped seeing my external hard drive. I was working on it when the laptop lost power. The battery is dead and the power cable ...
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How to unmount external disk with one click (AMPLibrar issue)?

After an update from 10.4.6 to 12.2.1 The MacOS has a new feature: Sometimes it is not possible to unmount an external disk by the click on the unmount symbol in the finder Instead, the Mac now says ...
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External HD slow in Finder on Monterey

I have a 2020 MacBook Pro 13-inch with Monterey 12.2.1. An old external HD of mine, a Seagate one from 2009 worked well enough on Catalina and then when I upgraded it to Big Sur; but now, in Finder, ...
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How can I create a PKG installer that can be installed on an external drive?

I am trying to create a PKG installer with pkgbuild which lets the user decide if they want to put a part of the data to an external drive. I already did set the customLocationAllowAlternateVolumes to ...
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Does the boot drive for macOS have the hostname where I can easily get to it?

I don't throw out my old drives. I finally got a big NAS and I'm slowly going through the old drives copying the useful data to the NAS. Some of the drives were the boot drives from old laptops. It ...
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What happens if I install macOS on an external drive but connect it to a different Mac?

I have installed macOS on an external drive for use with my MacBook Pro laptop. What will happen if I plug this drive into my Mac Pro desktop and boot it up? I ask because the hardware of both devices ...
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Should I format an external hard drive before installing macOS on it?

I erased the internal disk of my MacBook Air (2016). Since there is no OS anymore, I turn it on in the recovery mode (Cmd + R) and want to install the macOS Sierra on a 2 TB external hard drive. In ...
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Can Apple Silicon-based Mac boot from *unauthorized* external drive?

Can one boot M1 MacBook from a unauthorized bootable external drive: i.e. the external drive that was prepared on some other Mac, and the user not having admin password of the MacBook he is trying to ...
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Two choices for Time Machine restore?

I did a full Time Machine backup on an external drive recently. I loaded an embroidery app and royally messed up my folders. I want to restore to that recent backup but I’m being asked from what ...
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Copying a folder from a Mac to an external hard drive using Terracopy: if you delete the source file does the destination file get deleted too?

When copying a folder from a Mac to a backup external hard drive using Terracopy? If you delete the source file or folder does the destination get deleted too? This happens using Carbon Copy Cloner ...
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Problem with MacBook suddenly not reading WD hard drives

I updated mac to Monterey and my two WD hard drives not working. It says Not mounted. Apple support can't help any more . It is not the ports or adapters as they are working with other storage system ....
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Cannot repair, mount or erase external drive (M3 Portable). Possible partitioning map problem

I have a problem with my 1TB External Hard Drive. Before I had it partitioned into 3 pieces (Time Machine for Mac, Personal Files, and Linux OS). After a few weeks, I have decided to delete the Linux ...
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LaCie 10TB external drive slows over time

I have a LaCie 10TB drive for storing photos and almost filled it completed. I notice Lightroom runs very slow and I suspect it there is an issue with the file structure. Does the file index table get ...
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Access External Volume Before Interactive Login

We are running a node service that needs to access an external volume (USB HDD). We've found that when we reboot the system and start the service via a plist in /Libary/LaunchDaemons our external ...
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How can I use an external HDD for both Time Machine and other data?

Many years ago, I set up an external USB HDD as a Time Machine volume. I don't know whether I did anything special at the time (and this answer indicates I didn't), but I've been using it as both a ...
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USB disk is visible on USB bus but not detected as a disk

I have a USB disk that is visible on the USB bus but it is not visible in diskutil nor in Disk Utility. I have rebooted my Mac. I have done a PRAM reset. I have tested with another disk, it mounts. I ...
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External hard drive fail to mount with APFS error "com.apple.DiskManagement.disenter error 49218"

I can't open my WD external drive after I reboot my mac with Monterey 12.1! I know that so many people had a similar problem so I followed all those solutions, but they are not working for me. I need ...
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Install macOS from external hard drive on my Macbook Pro

My Macbook Pro has the prohibitory symbol I am in a remote location where I can't connect to the internet for a long time. I have the macOS Monterey installer saved on an external hard drive. I ...
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Timemachine on MacOS Monterey-12.1 makes temporary volumes?

I have timemachine backing up to two external USB disks. This mostly works OK: backups seem to alternate between disks. However, sometimes df shows a long list of what are apparently temporary ...
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How extract a snapshot from a Time Machine backup to a new external HD partion so that this partion can act as a (boot) volume?

I found out how to extract a snapshot from a Time Machine backup to an external hard drive. I use: sudo tmutil restore /Volumes/TMdrive/Backups.backupdb/machinename/2021-11-30-042315/MyHD /Volumes/...
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Format external SSD for transferring files from old PC to mac

So, I bought a SanDisk Extreme Portable SSD thinking I can just plop the old PC files (pictures, schoolwork, old code repositories) onto it and then use the SSD with my new Macbook Pro. Turns out the ...
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WD Portable Hard Drive suddenly not connecting/mounting to Mac

I bought a 4TB WD Elements SE Portable Drive to back up all of my files about a month ago. I've spent the last month backing everything up, but today it decided to not work at all. When I plug the ...
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Metadata not showing in Finder window for images on external drive

I have two Macs: an Intel Mac mini (2018, running Catalina 10.15.7 I think) and an M1 MacBook Pro (2020, running Big Sur 11.6.1). I have an external SSD which I use for lots of work stuff. On both ...
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How can I use an external SSD instead of the built in HDD on a Mac Mini Late 2014?

I want to clone the HDD on a late 2014 Mac Mini onto a Samsung T5 or T7 portable SSD, and use that drive as the boot drive. Is that possible, and if so, how would I even start going about such a thing?...
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Backup a Veracrypt encrypted external harddrive with time machine

I already searched a substantial amount of time but did not succeed yet. I used VeraCrypt to fully encrypt my external hard drive named Media which contains a lot of media files such as photos, videos ...
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External HD connected to Time Capsule does not show up

My Time Capsule is old and gives lots of errors in backups, so I bought a (LaCie) external HDD to connect it to and do my Time Machine backups from that instead; Apple tells me I can do this. As per ...
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Cannot store files on Time Machine backup drive

I needed to format an external hard drive from Mac OS Extended (journaled, encrypted), the only available option was APFS. On this hard drive, I had my time machine backup in Backups.backupdb and ...
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How to set up Time Machine to use an internal disk

I want to use some of the features of Time Machine but don't need or want it to be backed up to an external drive. However, Time Machine doesn't show internal disk's when selecting a drive to use. I ...
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How to connect old Mac mini to new Mac mini as a external drive

I while back I bought a 2018 Mac mini. I'd like to connect my old (2011) Mac mini as an external drive to selectively transfer photos and such. I have found some documentation on how to do this, but ...
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why does showing "Get Info" for TimeMachine backups.backupdb take hours and hours and give wrong answers

I have a 1TB external (USB 3.0 connection) hard drive holding roughly 700GB of backups in TimeMachine form on a drive formated HFS+ (Mac OS Extended, Journaled). I have another 2TB external set up ...
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Does downloading to an external drive reduce internal drive read/write cycles?

Just wondering, can read/write cycles on a Macbook's internal SSD be avoided by downloading files from the internet to an external hard drive? I'm not sure how macOS handles this so I'm wondering: ...
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Disk Utility created phantom storage

I have a 2TB external hard drive. I wanted to have a 1.8TB Encrypted APFS partition, and a 200GB FAT Partition (for use on Windows and Linux systems). I ran into errors trying to figure this out, and ...
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