Short answer: many Intel UGREEN NASync models have the right CPU architecture for CasaOS and ZimaOS, but that does not make every model a drop-in install. Boot access, stock system-disk layout, NIC/storage drivers, cooling control, and recovery matter just as much as x86-64.
Start with the exact model
The UGREEN DXP2800 uses an Intel N100, 32GB eMMC system disk, two SATA bays, and two M.2 slots. The DXP4800 Plus uses an Intel 8505 and a 128GB SSD system disk. A recovery plan that works on one model may not apply to the other.
CasaOS is the less destructive experiment
CasaOS supports amd64/x86-64 Linux. Its CasaOS x86 support includes Debian and Ubuntu.
- Prove the NAS can boot standard Linux.
- Verify Ethernet, SATA/NVMe, fan, and sensor support.
- Use a separate test disk when possible.
- Install CasaOS on top of that Linux system.
ZimaOS needs a full boot path
ZimaOS targets generic x86-64 hardware. Current ZimaOS boot requirements call for UEFI, Secure Boot disabled, and at least 25GB of storage.
Do not overwrite the only UGOS system disk until you have a tested recovery image and know the machine can boot another device.
Test more than CPU compatibility
- all Ethernet ports at rated speed;
- SATA/NVMe discovery;
- SMART and temperatures;
- fan behavior;
- hardware transcoding;
- sleep/wake behavior;
- USB/HDMI if required.
A successful x86 boot is only the first checkpoint.
Choose the OS model
| Goal | Path |
|---|---|
| Normal Linux flexibility | Debian/Ubuntu + CasaOS |
| Dedicated NAS appliance | ZimaOS |
| Keep vendor support | Stay on UGOS |
The CasaOS Docker model explains the Linux-layer approach. The ZimaOS app platform shows the appliance model.
If your goal is simply an open x86 home-server platform, ZimaBoard 2 avoids the recovery risk of replacing a vendor NAS OS.
System-disk type changes the risk
A model with embedded eMMC is not the same migration project as a model whose stock OS lives on a replaceable SSD. If the stock system storage is difficult to remove, prefer an alternate boot device and preserve the original installation. If it is replaceable, storing the original disk untouched is a simple rollback strategy.
Back up UGOS before experimenting
Document the stock partition layout and create an image of the system disk when practical. Also export any UGOS configuration you care about. The objective is not only “can I boot ZimaOS?” but “can I return to the vendor state if NIC/fan/storage support is incomplete?”
Test Linux hardware support from live media
Before installing permanently, boot a live Linux environment and check:
lspci -nn
lsblk
ip link
sensorsVerify every NIC, SATA/NVMe device, and thermal/fan behavior. For media servers, test the iGPU device as well.
Storage layout needs special attention
NAS appliances can include SATA controllers, NVMe slots, vendor-specific fan control, LEDs, buttons, and embedded boot devices. A generic Linux kernel may boot while one of those platform features remains unsupported. Do not place irreplaceable data on the new OS until disk discovery and SMART monitoring are proven.
CasaOS and ZimaOS have different failure modes
With CasaOS on Debian/Ubuntu, you can install drivers or packages in the normal host OS if the hardware needs adjustment. With ZimaOS, the appliance model is cleaner but you should expect less host-level customization. That difference can matter more on repurposed vendor hardware than on generic PCs.
Do a non-destructive pilot
The ideal sequence is: preserve UGOS → boot alternate media → verify hardware → install to separate storage → run for several days → test power cycles and drive health → only then decide whether to retire the stock OS.
FAQ
Will ZimaOS install on every UGREEN NAS?
No. x86-64 is necessary but boot firmware and device drivers must also work.
Should I erase UGOS first?
No. Preserve or image the stock system and test alternate boot media first.
