![]() ![]() All Laptops can boot from external drives (Thunderbolt & USB) and the boot manager updates without interaction once I plug those in. The sticks just aren't recognised on any Mac laptop as 'bootable' once the procedure outlined in the manual is finished. searching net and especially Ask Different for solutions.Neither a Windows PC, nor a Linux laptop can boot the sticks I prepared. Frustratingly, that indeed boots as intended, but can't update the device either. booting a fresh virtual machine on a Mac host with just the needed iso attached.writing to customer support (answer: "iso looks good, should work, please try again").using a different iso (not matching the target device) from the vendor site (works without any issues according to instructions, but can't update my device…).gparted and fdisk mkfs.vfat on a Linux machine.Windows on-board tools on a PC for re-formatting the sticks.different versions of DiskUtility (Sierra and Mojave).writing the iso file with dd directly to the stick (and in another round using Balena etcher and universal usb installer).partitioning the sticks to either MBR or GPT.erasing the sticks a few times with DiskUtility.The external USB-drive never shows up in the boot menu. What then doesn't work is booting a MacBook Pro 2015 from that stick. The instructions ( PDF) for a firmware update utility say to use Unetbootin on MacOS to write an iso-file to a FAT32 formatted (erased) USB stick. Once the drive is complete, you will see a message reading "Restore Complete".Goal is updating a NVMe SSD firmware on a Mac without optical drive via USB stick that should contain a minimal Linux, flasher and payload. This will likely take several minutes to complete but it does depend on the speed of your PC and choice of flash drive.ġ1. TransMac will now copy the image to your USB flash drive. Note: This is the final warning that this USB drive will be erased and overwritten with the Leopard image.ġ0. TransMac will likely now tell you the disk image has not been compressed, and will inform you that it will be written as a raw disk image. Confirm that the disk image you selected is correct, then press "OK".ĩ. You will now be back on the Restore screen. Double-click on the file or click "Open" to select the file.Ĩ. Note: Your filename may be different than the one shown. Locate the Leopard image file on your hard drive using this window. So changing to "All Files" is recommended. The file referenced earlier in this tutorial is a. You can change this via a drop down menu in the bottom right corner of this window:ħ. By default, TransMac will only look for files that have the extension. Click the "." icon to browse your hard drive.Ħ. The next screen will want to know which image file you are going to write to your USB drive. As long as you're okay with the USB drive you're using being erased, click Yes.ĥ. There will also be a warning that the drive will be erased. If you did not run TransMac as an Administrator, TransMac will now prompt you to do so. Right click on your USB drive, then on "Restore with Disk Image".Ĥ. In the left column of the TransMac window, there should be a list of all drives currently available on your Windows PC.ģ. If you're not sure how, just right click on the program or shortcut, then on "Run as Administrator". The drive will be wiped in the following processes.Ģ. Plug in your USB drive, and ensure no important files are on it. ![]() The steps to create a bootable Leopard USB installer are:ġ. Please purchase a license if you intend to use the software beyond the trial. Note: TransMac costs $59, but a 15 day free trial is also offered and will work well enough for this purpose. The version used in this tutorial is TransMac 12.6. ![]() An 8GB drive should work fine, but that is the minimum size I would recommend to try. This tutorial used this copy of Leopard, a 16GB PNY USB 3.0 Flash drive, and Windows 10 version 1909. ![]()
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