$ cat /proc/cmdline
BOOT_IMAGE=/zImage syno_hw_version=DS920+ console=ttyS0,115200n8 netif_num=1 synoboot2 earlycon=uart8250,io,0x3f8,115200n8 mac1=00113241BBBA sn=2040SBRQ3A5FS HddEnableDynamicPower=1 intel_iommu=igfx_off DiskIdxMap=0002 vender_format_version=2 root=/dev/md0 SataPortMap=22 syno_ttyS1=serial,0x2f8 syno_ttyS0=serial,0x3f8
sh-4.4# dtc -I dtb -O dts /var/run/model.dtb
<stdout>: Warning (unit_address_vs_reg): /DX517/pmp_slot@1: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /DX517/pmp_slot@2: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /DX517/pmp_slot@3: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /DX517/pmp_slot@4: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /DX517/pmp_slot@5: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /internal_slot@1: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /internal_slot@2: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /internal_slot@3: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /internal_slot@4: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /esata_port@1: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /usb_slot@1: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /usb_slot@2: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /nvme_slot@1: node has a unit name, but no reg or ranges property
<stdout>: Warning (unit_address_vs_reg): /nvme_slot@2: node has a unit name, but no reg or ranges property
/dts-v1/;
/ {
compatible = "Synology";
model = "synology_geminilake_920+";
version = <0x01>;
syno_spinup_group = <0x02 0x01 0x01>;
syno_spinup_group_delay = <0x0b>;
syno_hdd_powerup_seq = "true";
syno_cmos_reg_secure_flash = <0x66>;
syno_cmos_reg_secure_boot = <0x68>;
DX517 {
compatible = "Synology";
model = "synology_dx517";
pmp_slot@1 {
libata {
EMID = <0x00>;
pmp_link = <0x00>;
};
};
pmp_slot@2 {
libata {
EMID = <0x00>;
pmp_link = <0x01>;
};
};
pmp_slot@3 {
libata {
EMID = <0x00>;
pmp_link = <0x02>;
};
};
pmp_slot@4 {
libata {
EMID = <0x00>;
pmp_link = <0x03>;
};
};
pmp_slot@5 {
libata {
EMID = <0x00>;
pmp_link = <0x04>;
};
};
};
internal_slot@1 {
protocol_type = "sata";
power_pin_gpio = <0x14 0x00>;
detect_pin_gpio = <0x23 0x01>;
led_type = "lp3943";
ahci {
pcie_root = "00:12.0";
ata_port = <0x00>;
};
led_green {
led_name = "syno_led0";
};
led_orange {
led_name = "syno_led1";
};
};
internal_slot@2 {
protocol_type = "sata";
power_pin_gpio = <0x15 0x00>;
detect_pin_gpio = <0x24 0x01>;
led_type = "lp3943";
ahci {
pcie_root = "00:13.3,00.0";
ata_port = <0x02>;
};
led_green {
led_name = "syno_led2";
};
led_orange {
led_name = "syno_led3";
};
};
internal_slot@3 {
protocol_type = "sata";
power_pin_gpio = <0x16 0x00>;
detect_pin_gpio = <0x25 0x01>;
led_type = "lp3943";
ahci {
pcie_root = "00:12.0";
ata_port = <0x02>;
};
led_green {
led_name = "syno_led4";
};
led_orange {
led_name = "syno_led5";
};
};
internal_slot@4 {
protocol_type = "sata";
power_pin_gpio = <0x17 0x00>;
detect_pin_gpio = <0x26 0x01>;
led_type = "lp3943";
ahci {
pcie_root = "00:12.0";
ata_port = <0x03>;
};
led_green {
led_name = "syno_led6";
};
led_orange {
led_name = "syno_led7";
};
};
esata_port@1 {
ahci {
pcie_root = "00:13.0,00.0";
ata_port = <0x03>;
};
};
usb_slot@1 {
vbus {
syno_gpio = <0x1d 0x01>;
};
usb2 {
usb_port = "1-3";
};
usb3 {
usb_port = "2-1";
};
};
usb_slot@2 {
vbus {
syno_gpio = <0x1e 0x01>;
};
usb2 {
usb_port = "1-2";
};
usb3 {
usb_port = "2-2";
};
};
nvme_slot@1 {
pcie_root = "00:14.1";
port_type = "ssdcache";
};
nvme_slot@2 {
pcie_root = "00:14.0";
port_type = "ssdcache";
};
};
sh-4.4#
I also tried other random HDD I have lying around and see the same thing. Any disk not in Bay 1 is not shown in Storage Manager but is available in shell.