zyopf.blogg.se - Big sur install usb stick

Especially if you think you may end up repeating the installation (perhaps to install onto multiple computers). After installation, before rebooting, use the Startup Disk settings page to select your SSD as the new boot device.Īlternatively, you may prefer to make a bootable USB thumb drive and use its installer.Click on “show all disks” to see your external SSD. After agreeing to the software license agreement, it asks where you want to install it.Just download the installer app from the App Store.Īccording to this MacWorld UK article, you should be able to tell the installer to use your external disk: Download, but do not run the Big Sur installer via the App Store.(If you format it as “Mac OS Extended”, the Big Sur installer will convert it as a part of the installation process). Use a GUID partition scheme and APFS format.

One involving an external bootable thumb drive, and one that does not.īoth procedures start with formatting your external SSD and downloading the Big Sur installer: Instead, I have found what appears to be two different procedures. To do that, you should not just run the updater - that will upgrade your running installation (the internal hard drive). (This is, I believe, your only option if you have an M1-based Mac).

You might, however, prefer to perform a clean installation to the SSD instead of an upgrade. The latest versions of Carbon Copy Cloner should be able to do this. Since your Mac is Intel based, you can upgrade the internal hard drive and then make a bootable clone to the SSD. If your Mac has a T2 chip (which according to Apple does not apply to your 2017 iMac), then you must configure it to allow booting off of external media. If you are building an external SSD from an NVMe device, then Thunderbolt will give you much better performance, but it will cost more. SATA tops out at 6 Gbit/s, so just use a USB3 enclosure.

If you are building an external SSD from a SATA-based device, then Thunderbolt is overkill.

Let the SSD have all of the port’s bandwidth.

If you are using USB, don’t share the port with any other devices.

Even better (but maybe too expensive) a Thunderbolt device. Better, a USB 3.1-gen-2 (10 Gbit/s) device. Make sure you have enough bandwidth for the SSD. From what I’ve read and from prior experience with older versions of MacOS, it should work, but you should be aware of a few things: I haven’t actually done this before, so others please feel free to correct/update me.