On 6/19/20 9:48 AM, Nicolas Kovacs wrote: > Hi, > > In my daily work I'm mainly using USB keys for work : one with CentOS 7, one > with OpenSUSE Leap 15.1, one with Slax Live for data recovery purposes, one > with Ghost4Linux and one with FreeDOS which I use for flashing the odd BIOS. > > Last week I bought a set of three flashy colored USB keys in a local shop. To > my surprise, none of them seem to be able to boot anything. When I write a > bootable image (CentOS, OpenSUSE, whatever) to any one of the USB keys, the USB > key boot option doesn't show up on any one of my sandbox PCs. Looks like I just > learnt the hard way that some USB keys can't be used for installation purposes. > > As far as I can tell, I need a set of 8 GB keys so the biggest image, the > CentOS 8 ISO, can fit. Can you recommend a no-nonsense USB key brand which I > can use to make a set of USB installation keys ? > > Cheers, > > Niki > I have had no issues with the install ISO using dd from linux to copy directly to the device. Something like: dd if=./<name.iso> of=/dev/sd<letter> bs=4M status=progress Where 'of=' is the device // make sure NOT to use a separate partition (so /dev/sdb and not /dev/sdb1, but the whole device when copying the install isos. If you are trying to do something else (create a bootable actual partition that runs from usb .. that should also be possible, but harder :)