The Acronis KB link does lead to no explaination. When trying to create a bootable media with a 64GB stick the wizard will quit with an error message 'Media cannot be formatted'. This is also and especially valid for using an USB stick as Acronis bootable device. So just in case you like to buy an USB stick, make sure that you consider the limitations. I have contacted Asus and they confirmed that even the lastest UEFI firmware they have, do not support 64GB or larger sticks yet.
I have tried this on several computers of several age and all of them were not able to boot from this stick, nor being recognized correctly for flashing with BIOS / UEFI internal tools like Asus EZ Flash etc. This is especially the case when you are using such a large stick in UEFI mode, which needs to be formatted with FAT32. Regularly I am unable to boot from a 64GB sized stick or being able to use it to flash a BIOS / UEFI Firmware on the mainboard because they cannot handle it correctly. I am personally very satisfied with the speed and usability design of the Sandisk Extreme series, that really deliver USB 3.0 Speed adantages in read and write actions at a good price.īe cautious to use any sticks larger than 32 GB capacity when you want to make sure that you can use them as a boot device, or to be recognized in your BIOS / UEFI firmware. While availability of cheap, voluminous and fast USB 2.0 or 3.0 sticks is really a good thing, there are caveats you need to consider.