Usb Drive For Pc And Mac Os


USB port types and names

Jun 22, 2018 Reading PC-formatted hard drives using your Mac is easy enough. Just plug in the drive, then access the files you need to use. But writing to that drive? Well, that's a little more complicated. This is due to the fact that NTFS, the file system utilized by Windows PCs, has limited support on Mac. Jul 20, 2018 Insert the flash drive or hard drive you want to format for Windows compatibility. Go to the Applications folder on your Mac’s hard drive, then go to the Utilities folder, and launch Disk Utility. Select the drive you want to format. Warning: the following steps will delete any info you currently have on the drive. Click the Erase button. Mar 15, 2018 Both Windows and Mac OS X have full read-write support for exFAT drives without any additional third-party software. FAT32 has some serious limitations–individual files can only be up to 4GB in size each, for example–but exFAT doesn’t. May 22, 2020 Don't worry, the following part will show you the solution for Windows and Mac OS users. The process for formatting a drive is different depending on the system you’re using. Let’s see how to format USB drive on a Windows PC first. Format USB drive on Windows Operating System.

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:


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.


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

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.

Get the best performance from your USB devices

Usb Drive For Pc And Mac Os Recovery Tool

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.

Usb drive for windows and mac

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.

When nothing else worked when trying to install Mac OS X Leopard onto my PowerBook G4 1.67GHz without the original installation DVD, here's what eventually did.

What you'll need

  • PowerPC-based Mac you want to install OS X on by using a USB drive
  • ...USB drive (16GB or more in capacity; 8GB might work, but come on, it's 2020)
  • Second old Mac that already boots Mac OS X Leopard (other versions may work, but are untested. All I know is that my macOS Catalina hackintosh did NOT work)

Part 1: Preparing the disk image for restore

UsbBootable mac os usb drive
  1. Boot up your second old Mac running Mac OS X Leopard
  2. Download #31 ( from here and extract the DMG
  3. Scan the DMG for restore using Disk Utility ('Images' -> 'Scan Image For Restore...')
  4. Lock the DMG (right-click -> 'Get Info' -> check 'Locked')

Part 2: Restoring the disk image to the USB

  1. Format your USB as 'Mac OS Extended (Journaled)' using the 'Apple Partition Map' using Disk Utility
  2. Restore the DMG to your USB using Disk Utility, making sure you check 'Erase destination' (open the Restore tab, drag and drop the DMG to the 'Source' field, drop and drop the partition you formatted in Part2Step1 to the 'Destination' field)
  3. Eject your USB drive and plug it into the PowerPC-based Mac you want to install OS X on

Usb Flash Drive Mac And Pc Compatible

Part 3: Installing Mac OS X (okay kids, this is where it gets complicated - mostly copy/pasted from here; follow that if this doesn't work for some reason)

  1. Boot your PowerPC-based Mac into OpenFirmware (power it down and hold Command + Option + O + F while powering it back up)
  2. Run dev / ls and look for the entry with '/[email protected]' at the end of it (in my case '[email protected],1')
  3. Run devalias and look for the entry with the text you found in Part3Step2 at the end of it (in my case 'usb0')
  4. Run dir text_from_Part3Step3/[email protected]:3,SystemLibraryCoreServices (a.k.a. dir usb0/[email protected]:3...) and make sure the entry that contains 'BootX' also contains 'tbxi' (if it doesn't, panic!)
  5. Run boot text_from_Part3Step3/[email protected]:3,SystemLibraryCoreServicesBootX (a.k.a. boot usb0/[email protected]:3...)
  6. You should see a little spinner, then some white-on-grey text, and finally the Apple logo. Congratulations, you've successfully booted your accursed PowerPC Mac from a USB drive! The installation process is the same from here on out as if you were booting from an official Mac OS X Install DVD.