If it is then remove the active flag using these instructions.

Check to see if the active flag is set to active on the partition.

Here are some steps to try and resolve the issue: Please refer to the system or motherboard manufacturer’s documentation for access and configuring options. Some of these steps require accessing the system’s BIOS. Issues booting while a USB drive is connected is usually the result of a USB Device option being enabled in the System BIOS' Boot Order or Boot Sequence.

PC Gaming FireCuda Gaming Hard Drive FireCuda Gaming Hub FireCuda Gaming Dock FireCuda Gaming SSD FireCuda 530 SSD FireCuda 520 SSD FireCuda 520 SSD - Cyberpunk 2077 Limited Edition FireCuda 510 SSD FireCuda 120 SSD Beskar™ Ingot Special Edition.

PlayStation Gaming Game Drive for PlayStation Game Drive for PlayStation Marvel Avengers Limited Edition Game Drive for PlayStation Last of Us Part II Limited Edition Game Drive for PS4.

Xbox Gaming Seagate Storage Expansion Card for Xbox Series X|S Game Drive for Xbox SSD with LED Game Drive for Xbox with LED Game Drive Hub for Xbox with LED Game Drive for Xbox - Halo Infinite Special Edition Game Drive for Xbox Game Drive for Xbox Cyberpunk 2077 Special Edition Game Drive for Xbox - Halo: Master Chief Limited Edition Game Drive for Xbox Game Pass Special Edition Game Drive for Xbox SSD Game Drive Hub for Xbox.

Check if usb is bootable