

You might also try NTFS if that doesn't work, just as a shot in the dark. This information is also displayed in disk management. Make sure the flash drive is formatted as FAT32 this should be the most compatible option for usb booting. For example, mine says "Healthy(Active, Primary Partition)". For your drive, the partition must say "Active". However, you can check if the flash drive is bootable with the following procedure in windows:ġ) Run diskmgmt.msc - This is the windows disk management utilityĢ) Find your drive in the list (assuming it is plugged in)ģ) In the lower half of the window there is a visualization of the partitions on each disk. Since you have tried multiple different isos/installers without success I would rule out the issue being with the software.

Try running over those steps and if that doesn't get you started then give me a bit more information and I can offer more advice. You don't give much information in terms of your hardware setup or windows/linux experience, so it's hard to gauge what needs to be considered. Also note if you have older hardware you might not even be able to boot from USB (though I think that era is mostly in the past, let's assume for now you can). It's not inconceivable that your hardware only looks at certain USB ports during boot. Also, you need to make sure that particular port has power during boot (lights on the flash drive should tell you it's ON). You need to ensure you have usb boot enabled in your BIOS, and that the boot order specifies USB first.

It sounds like your issue might not be the usb image but just the booting from usb altogether. I chose to format my flash drive in LiLi to ensure no other files would interfere with the installation.
CREATE BOOTABLE USB FOR CENTOS 7 ON MAC ISO
I used the 'everything' iso from - roughly 7.4GB, so make sure it will fit on your flash drive. Of course you will need an image of the CentOS you want to run (used for LiLi step 2). I used LiLi to create the bootable usb, which should be very straight forward-just work in order from the top panel to the bottom. I just finished doing this not too long ago.
