All Questions
Tagged with external-hard-drive macos
240
questions
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13
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"Device not configured" after external HD improperly unmounted
I accidently unplugged my external HD before the eject was done :-/
/Volumes/Red is still there and can't be deleted.
The HD still mounts but as /Volumes/Red 1.
How can I remove /Volumes/Red?
$ gls -...
- 101
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votes
0
answers
22
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Symlink Messages Library Data
My hard drive is completely full on my mac, mostly due to my extensive Messages archive. I have an external drive and would like to move the data over to it using a symlink (or other solution). When I ...
- 133
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0
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317
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Sandisk Extreme Portable SSD (1TB) not visible
I have a SanDisk Extreme Portable SSD (1TB), and have been using it for two years without any issue.
This weekend I connected it to a new Synology NAS (DS223) and tried to copy the files over. The ...
0
votes
1
answer
237
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Using rsync to merge two source directories
I have my photos on an external disk, which I back up to my server by manually running a script that uses rsync. This script ensures that my external disk and my backup are in sync, which means ...
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0
answers
73
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Mac Mini requires password to create directory on external drive, but not internal drive. Huh?
MacMini logs-itself-in on boot. Plug in a utility external drive, drag a folder from internal drive to blank external, password required. Make a directory on internal drive, no problem. Copy a file to ...
- 178
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0
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215
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Upgrading Mac OS 10.14.6 (Mojave) to Mac OS Ventura having the installer stored and running from a external drive
I'm trying to upgrade Mac OS on my Powerbook. It is currently running Mojave. I've tried a regular (in-place) upgrade but it requires a ridiculous amount of free space on the MacBook Pro disc. The ...
- 1
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votes
1
answer
88
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External Drive Not Showing up Anywhere
I have a Lacie Rugged Drive I'm having issues with. It will continue to sound like it is starting up but won't mount. I can see it listed on my mac under the system report but it will not show up ...
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207
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USB HSF+ external drive partition won't mount. "(NO WRITE)" & "Resource busy" errors when trying fsck
I was copying a huge file from a USB external drive when it suddenly disappeared from the Finder. I disconnected and connected it back, but the primary partition wouldn't mount. Rebooting the Mac didn'...
1
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0
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1k
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Backup iCloud files to an external hard drive?
What are my options for backing up every file on my iCloud to an (exFAT) external hard disk?
Right now I have more files on iCloud than space on my Mac internal hard drive.
Copying folders from the ...
- 39
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votes
1
answer
51
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CCC from one disk to external disk, then CCC back on Mac
Last year I used Carbon Copy Cloner to make a clone of my 2012 21.5 inch Mac running Mojave to an external drive. Sadly, it was NOT an SSD type drive. I upgraded the OS to Catalina on the new external ...
- 13
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0
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179
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How to restore the exFAT structure on my hard disk?
So I have a hard disk that contains a backup of some of my files (it has 2 partitions, a GUID partition map with one Time Machine “backup”, which is a clone of my Mac in APFS format, and other is a ...
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0
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108
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Does MacOS locally store information about external drives?
I used a borrowed Mac to transfer sensitive data directly between two USB thumb drives. Ideally, I'd like to not leave a single trace of the files and transfers on the borrowed Mac, but I understand ...
- 1
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votes
0
answers
103
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Advice on next steps for recovery? (WD 3TB MyBook Essential)
My Western Digital 3TB MyBook Essential (Mac OS Extended (Case-sensitive, Journaled)) made a knocking noise a couple of years ago during a Time Machine backup on my mac:
Time Machine couldn't ...
- 1
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0
answers
229
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Is there a bug in macOS with APFS on an external SSD causing the file buffers to not flush and losing data?
I was migrating files from an old Mac running Mojave to a new one running Monterey, using an external SSD formatted with APFS (encrypted), and noticed that there was some data being lost. I had ...
- 101
1
vote
1
answer
5k
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How to make OneDrive sync to an external HDD under MacOS?
The question is in the title. Microsoft gives these instructions, however the part for Mac is either obsolete or just never worked (and looks unfinished to be honest). No matter which file system I ...
- 183
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1
answer
231
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External Drive Shows in Sys.Profiler but Won't Mount/absent from DiskUtility (OSX 10 & 11)
I have a Sandisk 1TB Extreme USB-C external SSD that I bought and filled with an important 900GB dataset on about 16 months ago. I have not used it since. I have probably updated my mac OS to several ...
- 101
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1
answer
699
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Questions about external SSD software RAID?
I currently have two 2.5" 4TB SSDs. My plan is to get an external Thunderbolt enclosure with a minimum of 4 bays and no hardware RAID (e.g. OWC Thunderbay Mini), and buy two more 4TB SSDs to make ...
- 213
4
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2
answers
1k
views
What is happening in my external HD with the activity light still blinking after having been unmounted?
I have an external HD (WD 2TB My Passport Ultra) that I use with my Mac for Time Machine backup. Everything is working fine. An oddity though: When I eject the drive, the Mac has no complaints, but ...
- 669
1
vote
1
answer
472
views
Why does it so much time for Mac to identify and show external drive?
In windows when I insert my external HD / SD card it shows it within few seconds.
In my Mac it sometimes takes a few minutes!
What would cause this delay?
- 139
1
vote
1
answer
2k
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Can I make my iMac boot from an OS on an external drive in safe mode?
I've searched all over the internet but I could not find a concrete answer to this question: I have an iMac that works fine and an external hard drive with OSX on it that I can boot too, but how can I ...
- 285
1
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3
answers
11k
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How do I repair an external hard drive with a corrupted catalog?
I'm attempting to mount my nearly filled up 1TB Mac OS Extended External Hard Drive to my MacBook Air 13" which is running MacOS Catalina 10.15.7. When I do this, the media drive mounts onto the ...
- 61
3
votes
1
answer
13k
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SMART check on external USB hard disk on macOS
I recently tried getting smart status for my WD My Passport USB hard drive. I first ran $ smartctl -a /dev/disk3 but clearly the output was bound to be:
smartctl 7.2 2020-12-30 r5155 [Darwin 18.7.0 ...
- 81
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0
answers
244
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Cannot delete encrypted CoreStorage external hard drive with macOS
I have a 2TB Time Machine external HDD, encrypted with FileVault, that I use that I pulled out without ejecting.
The drive would then stop showing when I plug it back in and so I've tried to just wipe ...
- 101
2
votes
1
answer
7k
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How to properly use Samsung Magician on macOS in Parallels Desktop? How can I flash Samsung firmware on a MacBook Pro?
I have a 2019 MacBook Pro running macOS Catalina. I have a Samsung 840 EVO 750GB SSD that used to be the internal drive of a different MacBook Pro before its logic board died. I've repurposed this 840 ...
- 135
1
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0
answers
2k
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Why is my external hard drive frozen for hours after attempting to stop of a copy of 12,000+ files?
I clicked “stop” when I was copying and pasting all my files from my Mac to my Seagate external hard drive. It has been stuck at copying 12,864 items to ”Backup Plus” with a zero progress bar then ...
- 11
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votes
1
answer
294
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Can you access Lacie 2Big visible to two macs via daisy chain?
Hi I'm planning to connect lacie to mac A and mac B via thunderbolt 3 daisy chain.
It is visible on the directly connected mac but not on the other one.
Is there a way I can access it from the mac B ...
- 101
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votes
0
answers
724
views
Format a USB disk on PURE FAT32, one partition only, on a Mac
There are other questions on SO about this, but not asking what I want.
I do not want to know how to format an external FAT32 disk from terminal, because this can be done by typing this:
sudo ...
- 1,777
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1
answer
709
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Can I Mount an external hard drive as a network drive?
is there any way to make a Mac think my external hard drive is a network drive?
Basically I need a USB/Thunderbolt Drive to be recognised as a network drive on my Mac since the program (Avid Media ...
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votes
0
answers
616
views
How to solve Forbidden 403 on an external HD in MAMP
I made a copy of my entire physical project from the HD on the Mac to an external HD, however when I enter the system folder I'm receiving the 403 error, inside the system folder there is a folder ...
- 103
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0
answers
4k
views
Failing to repair an external HFS volume
Trying to repair an external hard drive (Seagate portable 2TB), it had one partition that contained both time machine stuff and some files that i only have one copy of unfortunately.
I assume that ...
- 1
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0
answers
315
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HFS+ encrypted external could not mount or not be repaired - OS X
I have a serious problem with my TimeMachine external 8TB Seagate.
It has been used as my TimeMachine disk. Did a full backup, installed lastest OS X from scratch and the external disk will no longer ...
1
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0
answers
29
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Why does an APK file size of 7.6 MB allocate 1.36 GB on an exFAT formatted external hard drive when reverse-engineered?
I have an apk file size of 7.6 MB. When I reverse-engineer this apk file through apktool, which is a reverse engineering tool for apk files, it allocates 1.36 GB on an exFAT formatted external hard ...
- 141
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0
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54
views
How do I create a bootable copy of my operating system on an external HDD?
I have a MacBook Air which I'll be installing Linux on, and want to copy the operating system to an external hard drive so I don't lose my files. I tried using Clonezilla, however it does not show up ...
- 205
3
votes
1
answer
3k
views
MacOS - Creating Symbolic Link for User Library from External HD to Primary HD
I have a new 2018 Mac Mini. I use Macs a lot at work, but this is my first Mac for home use.
I have about 4TB of documents, data, photos and other media … far exceeding the 512GB SSD primary drive....
- 33
1
vote
1
answer
3k
views
How to fix “Operation not supported” on mac os
I am trying to install the Flutter onto my computer onto an external drive I have followed the instructions on their website to try and install it. https://flutter.dev/docs/get-started/install/macos. ...
- 11
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0
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16
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Files on the external driver not opening after using the driver on mac
I used to work on windows using my external hard drive. Today I just use it on Mac to move some files. Then I tried to open a file from my external driver using windows laptop but my work is not in ...
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1
vote
1
answer
464
views
External Disk shows used up space but i am not able to find any files inside
I have a MacBook Pro with Mac OS 10.14.6.
My external hard disk was working fine until one day all of a sudden it went blank, it doesn't show files anymore...
I have a WD external HD and I am using ...
- 11
1
vote
0
answers
512
views
Time Machine backup folder getting twice as big on other hdd?
So i have an old 1TB HDD for my Time Machine backups. Its nearly full (950gb used) and now i decided to move to a bigger HDD (i buyed a 5TB drive, but made partitions to split it to 2TB and 3TB, the ...
0
votes
1
answer
66
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TimeMachine: Will MacOS let me add second cloned HDD then use both?
Starting from one TimeMachine 2TB external USB HDD filled to 1.2TB, I used the Apple-recommended "Drag Backups.backupD folder" to a second 6TB external HDD. Counting files (5M) took 2 days (!) then ...
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2
answers
1k
views
My terminal and filesystem are hanging on macOS when dealing with millions of files
So I have had an external hard drive connected to my laptop, and have been writing millions of files to the external hard drive. One directory even has over 2 million folders at the first level deep.
...
- 387
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0
answers
3k
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Allocation unit for exFAT on macOS
I've spent the last few days researching how to get exFAT formatted drives to work on macOS without finding any authoritative information on the subject. Many seem to throw their hands up and declare ...
- 11
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1
answer
2k
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External disk with encrypted Time Machine partition doesn't eject properly
I'm not sure when this started, maybe when I setup my Time Machine partition to be encrypted or maybe at a particular OS update, but the Time Machine drive no longer ejects properly. I'd love some ...
- 101
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1
answer
138
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Mount an external hard drive if connected to the same folder
I am using MacOS Mojave 10.14.3, and I want to achieve something similar to this.
In Ubuntu I have this configuration to be able to mount an external disk to the same folder using its UUID. In this ...
- 247
1
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0
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42
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Ghost external HDD (OSX): nowhere to be seen
I need to retrieve a hard drive, which was used on Mac, but when connecting the drive it boots and lights-up, except that it doesn't mount, in fact it doesn't appear in my USB bus connection despite ...
- 121
1
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2
answers
2k
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External SSD Drive won't mount on OSX
A colleague at work has a Kingston 240GB SSD drive which has come out of a now dead computer. We want to be able to recover some data from it (no backups sadly) however the drive won't mount properly....
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1
answer
405
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Unexpected file modifications on external exFAT SSD
After moving an external drive from
I have a 1TB external SSD with a single exFAT partition. I plugged this into Mac OS X and write about 250GB worth of files. File contents seem normal. After ...
- 225
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340
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How do I keep two external drives synced in two ways?
I'm running MacOS High Sierra and just got a new 3TB external USB hard drive. On this drive, I have set up one 500GB encrypted MacOS Extended volume. I also have another 500GB portable external hard ...
- 11
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0
answers
833
views
Is there anything I can try to access this external hard drive?
I'm trying to access a friend's 1TB WD My Passport NTFS external hard drive. My Windows PC kept freezing. So I tried my MacBook Pro.
I installed FUSE:
brew cask install osxfuse
I tried:
$ diskutil ...
- 101
1
vote
1
answer
2k
views
Mac OS won't properly recognize both partitions on external drive
I have a big external drive that's already in use by my Windows computer. I also need to use it for a Time Machine backup of a Mac.
So far I've partitioned it up with MiniTools Partition Wizard. ...
- 123
1
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0
answers
53
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Format one partition of usb hdd in macos format ensuring others partition remain untouched
My macbook air os has been crashed and need to reinstall the os but to take backup first.
Its only boot in safe mode only where it mount only its own format(journaled) external drives.
Ntfs drive did ...
