Unable to run DSM7.3 bootloader after upgraded from 7.2 to 7.3

手賤升級到DSM7.3，啟動不了了(更新後無法執行 DSM7.3)

重新編譯引導(loader)啟動後無法開啟 DSM7.2 IP:5000(IP 無法訪問，或者 https://finds.synology.com 也無法查找到設備)

Panic!!!

Solution:
Downgrade(降級) from DSM7.3 to DSM7.1(42962)
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The trade off is loosing the system setup, but data file are still kept.
Why?
Because that if you choose to keep system and file both option, it will prompt "Failed to install DSM, Available system space is insufficient". So, the only option is to select "to keep file only" option.

Q: Why DSM7.1 and not the DSM7.2?
A: 需要半白才能安裝?

On Proxmox IP:8006 portal:
====================
To VM Shell: >> hp103 >> >_Shell
qm importdisk 100 /var/lib/vz/template/iso/rr.img local-lvm
#Assume that the VM for the NAS/DSM is on ID:100
Run the VM ID#100
Open the VM console >> menu.sh

>> Advanced option >> a: Allow downgrade installation
>> Select model >> ...
>> Select version >> DSM7.1
>> Select recompile the loader
>> reboot

Source:
======
Download the latest loader image: https://github.com/RROrg/rr
Upload the rr.img to local-lvm >> run qm command to make it as SATA0 as 1st bootable drive.

Download pat: https://archive.synology.com/download/Os/DSM/7.1-42661-1-NanoPacked

DSM7 on HP Proliant DL120 G7 server 1U

 To save your time, please give up to install Xpenology for the HP server directly.
The blog is the solution to install DSM7 Xpenology on top of the Proxmox VM.
Hardware:
=======
Boot from SD card or USB thumb drive for Proxmox is not recommend!
The best option is boot from the one of the x2SATA connectors.

Software: 
=======
#1. Proxmox

https://www.wundertech.net/how-to-install-xpenology-on-proxmox-dsm-7/

#2. GitHub - wjz304/rr: Redpill Recovery (arpl-i18n)

( https://wp.gxnas.com/12245.html )

Mount Xpenology setup iso file:

=======================

qm importdisk 100 /var/lib/vz/template/iso/arpl.img local-lvm

type menu.sh

m: Choose a model: DVA1622 geminilake-DT

n: Choose a Build Number: 42962

s: Choose a serial number

d: Build the loader

b: Boot the loader

Cmd: reboot from Proxmox command to reboot Xpenology

Note:
====

The Storage Device passthrough for hard drive on Proxmox is NOT working for DSM!!!

/sbin/qm set 100 -virtio2 /dev/disk/by-id/ata-WDC_WD????FYYS-02W0B0_WD-WMAY???????? (Not working for Xpenology/DSM7)

https://youtu.be/BFCXqFsRiOs?si=E5zvdhSFs56-5mWV