I found this in one of the other threads. This may work for you. Install 6.2.3 and look for /etc/synoinfo.conf. Take look into the file and you will see the internalport,  usbport, and esataport.  https://hedichaibi.com/fix-xpenology-problems-viewing-internal-hard-drives-as-esata-hard-drives/ Also take a look at https://xpenology.com/forum/topic/13525-how-to-configure-sata_args-in-grubcfg/#comment-100044 also https://xpenology.com/forum/topic/14224-tutorial-fix-skipped-hdd-numbers/ Also loo