RPI Imager with NVME: Partition does not have FAT file system | Home Assistant | Page 1

clear hornet Sep 20, 2025, 9:23 AM

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My RPI5 is now correctly configured to boot on nvme, but the RPI Imager shows this error message when installing home assistant. SHould I change anything to my NVME, like, should I create FAT partition manually, or should I just ignore it?

EDIT: this is a false-positive message, just ignore it.

timid crown Sep 20, 2025, 9:26 AM

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I'm guessing the NVMe was used as data disk only? Can you share the message?

clear hornet Sep 20, 2025, 9:27 AM

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timid crown I'm guessing the NVMe was used as data disk only? Can you share the message?

it was never used before

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The message is exactly the one in the title, I'll re-plug the nvme to my pc and re-install HA on it to be sure

timid crown Sep 20, 2025, 9:29 AM

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If the HAOS image is flashed on it it should have 8 partitions including a fat one.

devout parcel Sep 20, 2025, 9:31 AM

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format nvme, connect keyboard, no sd card but network inserted. It will boot up with pi imager, from there you select home assistant for install.

timid crown Sep 20, 2025, 9:31 AM

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I don't have a pi but here's an example from a OVA install

# lsblk -oNAME,LABEL,FSTYPE
NAME   LABEL          FSTYPE
sda
|-sda1 hassos-boot    vfat
|-sda2                squashfs
|-sda3                erofs
|-sda4                squashfs
|-sda5                erofs
|-sda6
|-sda7 hassos-overlay ext4
`-sda8 hassos-data    ext4

clear hornet Sep 20, 2025, 9:33 AM

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devout parcel format nvme, connect keyboard, no sd card but network inserted. It will boot up ...

Oh, okay I'll try this

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Ah, but I also need a screen^^ but will do

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My nvme is not longer detected by my pc, I hope plugin it with my RPI didn't broke it...

devout parcel Sep 20, 2025, 9:36 AM

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i think that your trying to access from windows, out of the box windows cant read linux filesystems

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format from pi imager

timid crown Sep 20, 2025, 9:38 AM

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clear hornet My nvme is not longer detected by my pc, I hope plugin it with my RPI didn't bro...

Check in Disk Management.

clear hornet Sep 20, 2025, 9:38 AM

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devout parcel i think that your trying to access from windows, out of the box windows cant rea...

I use kubuntu on my pc

timid crown Sep 20, 2025, 9:38 AM

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Then check lsblk -o+FSTYPE,MODEL.

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You use a USB to M.2 adapter, right?

clear hornet Sep 20, 2025, 9:39 AM

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timid crown You use a USB to M.2 adapter, right?

ye

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And I installed HA two times on it and it worked

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pluging it to the RPI is really the thing that made it invisible

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I may have just killed a 4TB nvme 🤡

timid crown Sep 20, 2025, 9:41 AM

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Hopefully not but why do you use a 4TB disk for HAOS?

clear hornet Sep 20, 2025, 9:42 AM

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well I firstly wanted to use it as additional space for my pc, then I realised I didn't really needed more space (already 6TB on it)

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So it was just unused since then

timid crown Sep 20, 2025, 9:44 AM

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Ah. HAOS tends to make a poor NAS though. Try dmesg -Tw, then plug the adapter in and see what happens.
You can also run watch -n1 lsblk -o+FSTYPE,MODEL and then do the same.

clear hornet Sep 20, 2025, 9:44 AM

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NVM, it's just my usb port that did shit, I now detect it

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I changed usb port

timid crown Sep 20, 2025, 9:45 AM

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Might have needed too much power.

clear hornet Sep 20, 2025, 9:45 AM

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And rpi imager was lying, there is a fat partition

devout parcel Sep 20, 2025, 9:45 AM

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that b*tch

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😉

clear hornet Sep 20, 2025, 9:47 AM

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I still reinstalled HA on it to show you the error:

devout parcel Sep 20, 2025, 9:47 AM

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now you handled power issue, try install from pi imager after formatting drive in pi imager

clear hornet Sep 20, 2025, 9:49 AM

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But since it has all the required partitions, I could just try running it on my RPI no?

devout parcel Sep 20, 2025, 9:49 AM

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try

clear hornet Sep 20, 2025, 9:49 AM

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How can I he certain that it correctly boots? It displays something if I plug a screen?

devout parcel Sep 20, 2025, 9:50 AM

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yes

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you see haos cli and login details when ready

clear hornet Sep 20, 2025, 9:54 AM

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It seems up and running, I just have to plug a rj45 cabble

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So the RPI imager message is totally a false-positive:

devout parcel Sep 20, 2025, 9:58 AM

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reboot afterwards

clear hornet Sep 20, 2025, 9:59 AM

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devout parcel reboot afterwards

wasn't needed

devout parcel Sep 20, 2025, 9:59 AM

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so up&running now?

clear hornet Sep 20, 2025, 10:01 AM

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yeeee configuring it 😋 thread already marked as solved

#RPI Imager with NVME: Partition does not have FAT file system