- How big does a usb need to be for osx mac os#
- How big does a usb need to be for osx install#
- How big does a usb need to be for osx manual#
How big does a usb need to be for osx install#
My original plan was to put the new SSD in my laptop, boot from the USB, format the drive, install ML, and then restore from time machine. If the circle persists, what are my options? I have both a time machine back-up and a super duper clone on an external hard drive. I am going to try using another USB, and if that fails, try the same thing via Firewire drive hopefully. I noticed the USB light does not seem to be on during boot.
How big does a usb need to be for osx manual#
I tried both the manual method and using Lion diskmaker, both with the same effects. For the purposes here, we’ll walk through how you can make a MacOS Big Sur ISO file by using the terminal. The process is different depending on if you are setting up the bootable USB installer using macOS or Windows. For this step, you will need a USB drive that is at least 16GB. app file and do not arrive as a disk image, to create a MacOS ISO file requires a sequence of steps through the command line, or the use of a third party application. Downloading MacOS and Creating a Bootable USB Installer. I also suffered from the circle with a lion through it. Because the macOS installer application is an. Before putting the new drive into my computer, I wanted to be sure my bootable ML USB worked. I recently obtained a new Samung 840 SSD. I have successfully used a USB to boot from Lion on many computers before. Of course, if you have an older Mac, you may have to use a USB 2.0 flash. You may need to refresh the System Information page after you plug in your device.
How big does a usb need to be for osx mac os#
I just want to install a clean Mountain Lion install on my new rMBP because I originally migrated from my older MBP and there's just too much junk on my new system, which has drastically worsened my start-up and shut down times and just makes the system not "feel as new", so I want to do a fresh install and only put the stuff I really need on this MBP. USB flash drives in those capacity ranges can usually cost between 10 and 100. To confirm that the Mac OS detects your USB device, complete the following. My existing Mountain Lion partition on the SSD is FileVault encrypted.
Both times I made sure I had a GUID partition. Grey circle with a slash through it, spinning wheel, nothing else happens. However, if we unfortunately lost files after macOS reinstallation, Time Machine or Cisdem Data Recovery is helpful to recover them back. Sometimes the thumb drive's read light is on, sometimes it isn't.Īfter reading this thread I re-did the USB thumb drive using Carbon Copy Cloner, but it's the same story. The key to reinstall mac OS Big Sur, Catalina or Mojave without losing data is the backup, since no one can guarantee all data will be perfectly maintained after macOS reinstallation. Here is a screenshot: The capacity of the USB is 128GB & Microsoft formatted it as 32.00 GB FAT32 with the remainder being Unallocated. Every time I try to boot using the USB drive I get the grey circle with the slash through it and a spinning wheel and it just sits there doing nothing, even 15, 20 mins later. Answer (1 of 15): I’ve just sorted this out for my own use and all that is on the USB came from the Microsoft site on the 24th November 2019. I made a bootable USB drive using Lion Disk Maker. What is a flash drive A flash drive is a small, removable hard drive that plugs in to a USB port on your computer. I am facing the same problem as Macboy Pro.
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