Good morning. How are you? A few years ago, a place where I worked was using FreeNAS 11. It had several folders (I believe they were the datasets), but an update was done and TrueNAS was installed. Before the update, it wasn’t possible to back up all the folders. Two folders disappeared. At first it…

If you’re crazy like me, you can boot from a WinPE live USB .

I would be afraid that wouldn’t work with Klennet. The only reason we would boot Windows

I’m going to test this with a ZFS pool on a USB stick. The free version of Klennet should allow a scan without needing a license. Will report my results. To be able to boot into a live Windows 11 environment from a USB or “Ventoy” stick is really useful.

You need to enter that at a Linux command line as user root.

Just booted into WinPE from a Ventoy USB stick, and I was able to download, install, and run Klennet Recovery. [1] It detected my ZFS pool (which I made on a USB drive for testing purposes) and was able to scan it. I can’t go any further than that, since it requires a license to actually recover the…

[image] winnielinnie: Just booted into WinPE from a Ventoy USB stick, and I was able to download, install, and run Klennet Recovery Are you crazy enough to extend the testing to UFS Explorer RAID Recovery ? I’ve just heard about it. As a bonus, even the free version should then let you recover…

Is the “UFS” in the title just a name? You want me to try to recover from a ZFS pool or from a UFS file-system? I can try to do that today. I can start an off-topic thread for it, so we won’t take away from @Jucelio_Rosa ’s troubleshooting.

It lists ZFS on the webpage for that software

It worked. I recovered two test files, both under 768 KB. A PDF and DOCX. It shows that WinPE’s Windows 11 environment can install and run this software, without needing a separate drive to install Windows from scratch. This is what I discovered with “Klennet” too. In this case though, “UFS Explor…

Thanks for confirming that there is now an alternative to Klennet Recovery for desperate cases. Of course, it is possible that one works better than the other on actual damaged pools. In either case, recovery requires enough space to recover (i.e. at least one large enough HDD) and some boot media …

Recover folders

TrueNAS General

etorix January 24, 2026, 7:34pm 29

Are you crazy enough to extend the testing to UFS Explorer RAID Recovery? I’ve just heard about it. As a bonus, even the free version should then let you recover small files (< 768 kB)… to the non-persistent live session.

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Recover folders

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