USB port types and names
- Change the USB-to-Mac connection way. Have you tried to restart your Mac once or twice?
- Note that this article covers versions of Mac OS X Prior to Lion (Mac OS X 10.7). We also have instructions for creating a Lion-installer drive. Step 1: Disk Utility.
- Download macOS Sierra 10.12.2 image file: Download Power ISO: Download R-Drive Image: Do.
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Select the USB flash drive that you wish to format from the list on the left. If you're having trouble finding the appropriate drive on the list, be sure to remove all other forms of removable storage to eliminate extraneous names from the list. Right click your flash drive to open up a list of options including 'Erase'.
USB (Universal Serial Bus) is an industry standard for connecting computers and other devices. It's available with many types of ports, and each type has a unique shape. On Mac computers, USB is available with these ports, depending on your Mac model:
USB-A
Type USB-A ports are commonly called USB, USB 2, or USB 3 ports, depending on the USB specification they support. They aren't reversible, so a USB-A connector plugs into the port only when oriented correctly.
USB-C
Type USB-C ports are available as either standard USB-C ports or Thunderbolt 3 ports that also support USB-C connections. They both look the same, and the connector plugs into the port in either orientation.
Learn more about identifying the ports on your Mac, as well as the adapters and cables you can use to connect older devices to type USB-C ports.
USB specifications
USB specifications are important primarily when you want the most speed and power for your USB device, or your device needs more power or is using too much power. Every USB port supports a particular USB specification, which determines the port's maximum>USB specifications on MacData transferPowerUSB 3.1 Gen 2
Also known as USB 3.2 Gen 2
Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 1
Also known as USB 3.2 Gen 1 or USB 3
Up to 5 GbpsUp to 900 mA at 5VUSB 2.0
Up to 480 MbpsUp to 500 mA at 5VUSB 1.1
Up to 12 MbpsUp to 500 mA at 5V
Also known as USB 3.2 Gen 2
Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 1
Also known as USB 3.2 Gen 1 or USB 3
Up to 5 GbpsUp to 900 mA at 5VUSB 2.0
Up to 480 MbpsUp to 500 mA at 5VUSB 1.1
Up to 12 MbpsUp to 500 mA at 5V
To learn which specification is supported by a type USB-A or type USB-C port on your Mac model:
- Choose Apple menu > About This Mac, click Support, then click Specifications.
- Check the System Information app for more details, including about USB devices connected to USB ports on your Mac. Select USB in the sidebar, then select a USB bus on the right.
Mount Usb Flash Drive Mac Os X
Get the best performance from your USB devices
Best Usb Os Flash Drive
USB specifications all work with each other, but speed and power are limited by the cable or device that uses the earliest specification. For example, if you connect a USB 3 device to USB 2 port, your device is limited to USB 2 speeds, and it can't draw more power from the port than can be delivered over USB 2. In other words, to get the best performance, make sure that the USB port on your Mac and the USB cable to your device meet or exceed the USB specification of the device itself.
If your Mac doesn't recognize a USB device after you plug it into your Mac:
- Check all connections: Unplug the device from your Mac, then plug it back in, and make sure that all cables and adapters are securely connected at both ends. Test with another cable or adapter, if available.
- Plug the device directly into your Mac instead of a USB hub or other device, and if necessary test with a different USB port on your Mac or device.
- Some devices need their own software, such as drivers or firmware. Others work without additional software. Check with the maker of your device, and install all available Apple software updates as well.
- If your device came with an AC power adapter, use it. Some devices can be powered by the USB port on your Mac. Others need more power than your Mac can provide.
- Restart your Mac.
Learn more
- USB 3 devices can create wireless interference that affects Wi-Fi and Bluetooth devices. Learn how to resolve Wi-Fi and Bluetooth issues caused by wireless interference.
- Mac notebook computers with USB-C or Thunderbolt 3 can charge over that port using a compatible USB-C power adapter and cable.
I had a guy bring me in an old Mac Book Pro that had a corrupted hard drive. I saved his Data but then realized his computer was so old that I was going to have trouble getting a copy of OSX installed. His computer was no longer supported on current OSX releases. To make things worse his DVD drive wouldn't read a install disk. So this post is the result of me finding a way to resurrect an old Mac Book Pro. I hope it will help someone else in a similar situation.
Note:
Before starting this tutorial, ensure that you have a USB drive with at least 8GB of storage as well as a Leopard, or Snow Leopard retail DVD or disk image. Grey DVDs that were included with a Mac at the time of purchase cannot be used to make USB boot drives as they do not include drivers for Macs other than the computer it was shipped with. In this tutorial I will be creating a Snow Leopard USB install disk. The steps are the same to create one for Leopard.
Creating a Snow Leopard USB Boot Drive Using Disk Utility
Start by launching Disk Utility on the Mac. To do this, you can either search for the application in Spotlight or find it in the Applications folder. Locate the USB drive on the left-hand side of the window and click on its name, not its partition.
Format the USB drive
- Click the Partition tab
- Under the Partition Layout header click on the 1 Partition option in the drop-down menu
- Click the Format drop-down menu and select Mac OS Extended (Journaled).
Bear in mind that this will erase all data from the USB drive, so backup any important files before proceeding.
- To format the USB drive drive, click the Apply button in the lower right-hand corner of the Disk Utility window.
Snow Leopard, DVD or Disk Image
- Locate a Snow Leopard disk image or DVD on the Mac
- If you're using a disk image, mount it to the desktop
- In the Disk Utility window, click the Restore tab in the USB drive's menu
In the center of the window you'll see two boxes: one labeled Source and another Destination.
- Drag-and-drop the USB drive's partition into the Destination box
- Drag-and-drop the Mac OS X Install Drive disk into the Source box
- At the bottom right-hand corner of the screen and click the Restore button
Usb Drives For Mac
Disk Utility will restore the OS X Install DVD or disk image to the USB drive; this process may take anywhere from 20 minutes to an hour depending on how quick the Mac is.
Using The Snow Leopard USB Drive
Now that you've created a Snow Leopard USB drive, let's use it to install OS X Snow Leopard as well as access Terminal, Disk Utility, and other OS X utilities.
- Power down the Mac and reboot while holding the Option key
- Select the OS X Install DVD from the boot menu using the arrow keys on the Mac's keyboard
- Select the language you'd like to use when prompted
Installing OS X Snow Leopard
To install OS X Snow Leopard from the USB drive, you'll need to reformat the Mac's hard drive. To do this, look towards the top of the screen and click on Utilities from the top menu and then click Disk Utility from the drop-down menu.
Formatting The Mac's Hard Drive
- Click on the Mac's hard drive name
- Click the Erase tab
- Select Mac OS Extended (Journaled) from the Format drop-down menu
- Name the drive whatever you'd like
Please note that all data on the Mac's hard drive will be erased, so backup all important files before proceeding.
- Press the Erase button to format the Mac's hard drive
Starting The Snow Leopard Installer
- Quit Disk Utility by pressing Command-Q on the keyboard
- Press the Continue button
- From the center of the window, select the Mac's hard drive
- Press the Install button
OS X Snow Leopard may take a bit of time to install depending on the Mac's hardware. Upon completion, the Mac will restart and prompt you to create an account.
Disk Utilities on the Snow Leopard USB Drive
Additionally, you can access Disk Utility, Terminal, Safari (to access Apple help articles. not general browsing) and other Mac utilities from the Snow Leopard USB drive.
Boot the Mac to the USB drive using the steps shown above and click on the Utilities button from the top bar. You can access all available utilities from this drop-down menu.
Flash Drive For Mac
It's nice to have these utilities available to use from the USB drive, especially Disk Utility. For example, if you believe your hard drive has died or is corrupted, you can boot your Mac from the USB drive and use Disk Utility to check the the hard drive's SMART status and repair said drive.
OS X Snow Leopard USB Drive, Completed
Usb Flash Drive Encryption Mac Os X
In this tutorial, I've shown you how to create a bootable OS X 10.6 Snow Leopard USB drive. You can now use the USB drive to upgrade, maintain and restore Macs to OS X 10.6.