LinxOS 6.0.99 SG Security-Enhanced (openEuler 20.03 SP3) Official ISO Download with Verified SHA-256
If you’re looking for a clean, unmodified, official LinxOS 6.0.99 SG security-enhanced ISO, you’ve come to the right place.
LinxOS is one of China’s longest-standing security OS vendors, and the SG (Security Guard) edition is the highest security tier in the product line. On top of the standard edition it layers full mandatory access control, separation of administrative duties, and trusted-computing measurement — built for power dispatch, defense, and classified government environments. Trustworthy public mirrors of such industry systems barely exist, so a genuine source plus a verifiable hash is the baseline.
This post provides the linxos-6.0.99-sg-el20.03-sp3-20250208-x86_64-DVD.iso (built 2025-02-08), with a PowerShell-verified SHA-256 hash to guarantee the file you download matches the official release byte-for-byte.
Who Is This Version For?
LinxOS 6.0.99 SG is built on the openEuler 20.03 LTS SP3 base — the security-enhanced member of the LinxOS 6.0 family, with a recent 2025-02 build. Key highlights:
- Linux 4.19 kernel (openEuler 20.03 LTS branch) with long-term stability validation
- SG hardening: mandatory access control (MAC), three-way separation of admin duties, trusted-computing measurement, fine-grained security auditing
- Targeted at power dispatch, energy, defense, and classified government scenarios
- Compatible with the openEuler software ecosystem, managed via DNF
- Meets Classified Protection Level 3+ and related national technical requirements
- x86_64 architecture, February 2025 build with up-to-date patches
Typical use cases:
| Scenario | Description |
|---|---|
| Power dispatch & monitoring | Base OS for core production systems under high adversarial pressure |
| Classified environments | Compliance scenarios requiring MAC and duty separation |
| MLPS Level 3+ construction | Using a certified secure OS as a compliance baseline component |
| Security mechanism research | Studying how MAC and trusted measurement land in enterprise systems |
Compared with the standard edition (linxos-6.0-el20.03-sp3), the SG edition ships a fuller set of security mechanisms and a newer build. For general-purpose server needs, see our standard-edition post.
File Details
| Item | Details |
|---|---|
| File Name | linxos-6.0.99-sg-el20.03-sp3-20250208-x86_64-DVD.iso |
| File Size | 4.76 GB |
| Architecture | x86_64 (64-bit) |
| Version | LinxOS 6.0.99 SG (based on openEuler 20.03 LTS SP3, built 2025-02-08) |
| Image Type | Standard DVD (full package set) |
| Language | Simplified Chinese / English |
Verified SHA-256 Hash
The following hash was generated locally using PowerShell Get-FileHash on the complete file — not copied from a website. This ensures every byte of your download is identical to the official release:
91A685AB525434CCDA3194C0C304EC6E053ACB30B5F73311EE3561719CB0D726The verified MD5 is:
639BEF75E1411A25173633CCDB1ECF82To verify your download, open PowerShell in the folder containing the ISO and run:
Get-FileHash .\linxos-6.0.99-sg-el20.03-sp3-20250208-x86_64-DVD.iso -Algorithm SHA256If the output matches the hash above, your file is intact. If it doesn’t, delete the file and download again.
Download Links
Quark Cloud Drive
Xunlei Cloud Drive
Additional Mirrors
More download mirrors (Baidu Netdisk, Aliyun Drive, Tianyi Cloud, OneDrive) will be added soon. Bookmark this page to get notified when new links are available.
| Platform | Status |
|---|---|
| Baidu Netdisk | Coming soon |
| Aliyun Drive | Coming soon |
| Tianyi Cloud | Coming soon |
| OneDrive | Coming soon |
Before You Install
- Always verify the hash: File corruption during a ~5 GB download is more common than you think. Two minutes of verification saves hours of troubleshooting.
- Choose the right edition: The SG edition enforces stricter access-control policies. Familiarize yourself with its permission model before deploying business software to avoid policy blocks.
- Create a bootable USB: Use Rufus (DD mode) or Ventoy. On server hardware, you can also mount the ISO via BMC virtual media.
- Works fully offline: The DVD image ships a complete package repository — a standard installation requires no internet connection, ideal for air-gapped networks.
- Keep evidence for compliance: For classified-protection projects, keep this page’s SHA-256 hash as part of your media acceptance records.
Why “Official Untouched” Matters
The entire value of a security-enhanced OS rests on trustworthiness. Images from unknown sources may:
- Contain backdoors or hidden remote access, nullifying the highest-grade security design
- Strip or weaken core components such as MAC and duty separation
- Alter package repository configs, poisoning every future update
- Fail media and baseline checks in MLPS or classified-protection assessments
For critical-industry production and research alike, official ISO + hash verification is the only reliable path.
Looking for LinxOS standard edition, LinxOS V6.0 G2, Kylin, UOS, openEuler, or other official domestic OS ISOs? Leave a comment and we’ll prioritize adding them with verified hashes.