Debian

• https://forum.doozan.com/read.php?2,32146,32146#msg-32146
• https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/Debian/
• https://community.wd.com/t/guide-how-to-install-debian-linux-on-the-my-cloud-pr4100-nas/217141

Alpine Linux

• https://github.com/Johns-Q/wdmc-gen2

Synology DSM

• https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/DSM/

FreeNAS

• https://community.wd.com/t/firmware-install-freenas-on-pr2100-pr4100/218730

More links

• ARM models:
  • https://community.wd.com/t/clean-os-debian-openmediavault-and-other-firmwares/93714
  • https://forum.doozan.com/read.php?2,32146,32146#msg-32146
  • https://watchmysys.com/blog/2018/02/debian-on-wd-ex2100-installation-instructions/
  • Custom kernel
    • https://github.com/Johns-Q/wdmc-gen2
  • Hardware control
    • https://github.com/c-MM/mcm-daemon
    • https://github.com/halmartin/mcm-daemon
• x64 models (DL2100, DL4100, PR2100, PR4100)
  • FreeNAS Easy to setup and nice web GUI. Requires 8GB+ ram though. https://community.wd.com/t/firmware-freenas-on-pr2100-pr4100-updated/218730
  • Ubuntu Recommended as it's easy to setup and maintain, but no web GUI out of the box. https://community.wd.com/t/guide-how-to-install-ubuntu-18-04-server-on-the-my-cloud-pr4100-nas/232786
  • Debian Great guide, but requires a bit of fiddling with the kernel.. supports OpenMediaVault though. https://community.wd.com/t/guide-how-to-install-debian-linux-on-the-my-cloud-pr4100-nas/217141
  • Custom kernel https://github.com/michaelroland/wdnas-dl2100-kernel
  • Hardware control (fan, temperature, lcd, ...) https://github.com/wdcommunity/wdnas-hwtools

Core tools for OS3 firmware modding

• https://github.com/michaelroland/wdnas-firmware-modding