I have connected two disks, first one a 2,5 480GB SSD in which I've installed Raspberry Pi OS Lite (32-bit) and second one 3,5 disk of 8TB Toshiba N300 NAS, I'm supplying a power of DC 12v 5A charger. If only connect the first one boots okay, the problem comes when I connect both disks, the Pi doesn't works not boot. I was thinking if is there a limitation on the size of the disk? I'm using a CLEAR RAID. Any suggestion?