199
votes
Accepted
What happens if you plug more than one charger in the new MacBook Pro (2016)?
The system will choose the power source that provides the most power, and it will not draw power from the others.
Apple has released a support article (and another one) describing this:
Your MacBook ...
- 12.4k
94
votes
Accepted
Formatting USB Disk As EXT3 On Mac
I needed to format a partition to ext3 on my USB flash drive. The drive was already formatted, and had 3 partitions, and I wanted to convert partition 1 from FAT32 to ext3.
install brew, visit http://...
- 1,066
49
votes
Accepted
iPhone 7 won't charge from my MacBook Pro
Running this in terminal worked for me: (it will ask for your user's password)
sudo killall -STOP -c usbd
This pauses the troublesome process instead of killing it altogether like other answers ...
- 2,009
49
votes
External display works on 30Hz
I had the same issue for a long time. At first, 60Hz worked. Then something happened and I'd only get 30Hz on my 4K Lenovo ThinkVision 27".
I stumbled upon this article and simply went to Display ...
- 591
42
votes
Is the Macbook 12 inch's USB-C charger interchangeable with other USB-C chargers or devices?
This answer is indented to be canonical answer for similar questions and applies to all devices that utilize USB (Type A or C) chargers and conform to the USB Power Delivery specification (version 2.x ...
- 102k
39
votes
Force Sidecar to use usb connection
I struggled with the same problem and just now finally solved it. The issue was for me that I didn't earlier "Trusted my iPad" on my Mac, and "Trusted my Mac" on my iPad.
Here's a ...
- 499
37
votes
iPhone 7 won't charge from my MacBook Pro
Once I force-quit the process "usbd" this problem went away.
Open Activity Monitor -> View -> All Processes -> Search for usbd -> Double click -> Quit -> Force Quit
Here are a couple of manual pages ...
- 531
34
votes
Force Sidecar to use usb connection
For anyone stuck with the same problem, I figured out that I needed to Trust the ipad on my Mac by opening a Finder window, click the ipad on the left bar and finally "Trust" with the appropriate ...
- 441
33
votes
Accepted
Should I use a Thunderbolt adapter or a USB 3.0 adapter for ethernet?
SHORT ANSWER
The answer to your question as asked in the title is it really depends on what ports you have available, personal preference, cost, etc.
I say this because both USB 3.0 and Thunderbolt ...
- 64.6k
33
votes
Creating a Windows 10 Install USB when FAT32 has 4GB max file size
The only way I was able to successfully overcome this problem was following this person's guide:
The final problem is that the install.wim file is too big to copy across to the FAT32-formatted USB ...
- 431
32
votes
Is Thunderbolt 2 to Thunderbolt 3 (type C) possible?
Let's break your question into two questions.
Can I use the ASUS MB169B+ with a Thunderbolt 1/2 Mac?
Is there a generic way to connect any arbitrary Thunderbolt 3 or USB Type C peripheral to a ...
- 329
31
votes
Accepted
What is "BC 1.2 port"?
Battery Charging spec
BC 1.2 is an abbreviation for (USB) Battery Charging (revision) 1.2. I'm no USB specs specialist so I can link some abstracts/files only:
USB Battery Charging (Wikipedia)
USB ...
- 66.4k
27
votes
Creating a Windows 8 bootable usb on Mac 10.6.8 without BootCamp?
None of the answers got it right.
This is how you do it — without BootCamp:
Get/download a Windows ISO image file.
Your USB flash drive should have at least 8GB.
Plug it in and format/erase it using ...
- 371
27
votes
Reset USB bus without reboot (MacBook ignores display)
You could try restarting the usb daemon in terminal. Like so:
sudo launchctl stop com.apple.usbd; sudo launchctl start com.apple.usbd
- 395
27
votes
Accepted
USB-C to MagSafe 2 Adapter
You don't want to mix those two.
Why?
Because the USB-C port conforms to the USB 3.1 Power Delivery Specification whereas the Magsafe charger does not. Part of that specification includes the ...
- 102k
25
votes
How to Disable USB Auto-mount
OS X has a mechanism, called the Disk Arbitration framework, through which programs can control what happens when disks are inserted or ejected. It also provides an opportunity to intercept a disk ...
- 983
24
votes
USB drive very slow on Mac, works fine on Windows
I usually run Linux, but recently got a 2018 MacBook Air and ran into this problem. I have a directory of just over 100 MB in around 200 files that I frequently backup and move between computers using ...
- 241
23
votes
How do I disable this message: "the disk was not ejected properly"?
This applescript will close them for you. Paste it into Script Editor and then Save as an application. Then grant access to that application in (System Preferences > Security & Privacy > ...
- 231
23
votes
Accepted
Transfer data between two Mac via USB-C
You needs to put one of the computer in Target Disk Mode (Press T on startup) and connect another USB-C equipped Mac with a USB-C cable (or USB-C to USB Adapter/Cable for older computer) Note that the ...
- 3,317
23
votes
USB-C dongles killing Wi-Fi on 2016/2017 MacBooks – Who’s to blame?
One customer got a good USB-C Hub and after plugged it to their MacBook Pro then appears the same wifi interference problem.
He solved the interference by covering the Hub with aluminum paper
(...
- 331
20
votes
Accepted
Disable the disk check when reconnecting an improperly disconnected disk to OS X
Open Terminal and enter:
#Get the disk identifier of the ExFAT partition
diskutil list
#Get the UUID of the ExFAT volume with diskXsY being its disk identifier
diskutil info /dev/diskXsY
#Create and ...
- 66.4k
20
votes
How do I pass the following error message in the Boot Camp Assistant: "Please format the USB drive as single FAT partition."?
After some trial and error, I finally figured out what the problem was and found a solution. Hopefully this will help those who come across this thread with the same problem.
The problem: ...
- 401
20
votes
Accepted
MacBook [Pro] or iMac - how many displays, what resolution/frequency?
This may not be the only available resource on this topic, but it is a comprehensive & reliable one...
EveryMac, as the name suggests, has information on every Mac model ever made [also iPhones, ...
- 116k
19
votes
Connecting multiple screens to the 2016 MacBook Pro with Touch Bar
We have a brand new Late 2016 Macbook Pro and 2 Apple/LG 21.5 USB-C 4K monitors. Daisy-chaining/MST does not work. We are using the monitors and nothing else with the original cables.
Only way to get ...
- 366
19
votes
USB-C to MagSafe 2 Adapter
The ElecJet Anywatt One fills this need, for the purpose of powering a USB-C device from a MagSafe power supply.
From the product page:
Anywatt built-in self-developed LDR6032 smart chip supports ...
- 341
18
votes
How to use 3rd-party USB Ethernet adapter with El Capitan
For Realtek based USB 2.0 or 3.0 Ethernet Adapters, you can get the driver from Realtek which works for both 8153 and 8152.
- 281
18
votes
External display works on 30Hz
Try EasyRes app from the app store.
One of my 4K monitors get 30Hz when I connect 2 4K monitors to my MacBook pro.
The 2 monitors works fine together on Windows.
Apple Support doesn't help.
EasyRes ...
- 281
17
votes
Accepted
Can I charge a 2017 MacBook Pro with a third-party USB C power adaptor?
The USB-C plug is not the problem, but the charger is.
It is underrated, so it will never manage to completely charge your battery while the Mac is in use, or supply enough when needed.
With that said,...
- 48.1k
17
votes
Accepted
How can I use Windows to create an OS X El Capitan or macOS Sierra USB flash drive installer from the disk image (.dmg) file downloaded from Apple?
Note: Links to instructions for other versions of OS X/macOS can found here.
User Josué Mpindi posted a question, where this answer was confirmed to work for macOS Sierra in a comment. Note that ...
- 40.3k
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