Not enough free space in an empty 3.76MbTb HD?

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Luis Vicente Justo Sarmentero

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Feb 2, 2026, 3:01:17 PM (4 days ago) Feb 2
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Dears,

First, tones of Kudos to all of you and especially to @Joao Cardoso!

I have started to recover my DNS-327L and I have bought 2 WD RED 4Tb to backup all my data safely as well as to have a home-made cloud and I'm getting this feedback from W11 when training to move my staff to the NAS: 
"Not enough space in mnt (\\...) 38.9 additional Gb are needed... mnt available space: 250Mb ...

 Captura de pantalla 2026-02-02 203909.png

Free space is total!

Captura de pantalla 2026-02-02 205219.png

I have set in the wizard fro "One big filesystem per disk, for easy management (standard)" and "recent, faster cleaning time, best reliability, low  fragmentation, big files support (ext4)"

Partitions where made automatically as bellow without issues:
Captura de pantalla 2026-02-02 204718.png

I'm using samba as root to avoid permisión and users  issues and pasting directly on sda2
Captura de pantalla 2026-02-02 204921.png

Could somebody tell me what I'm doing wrong?

Thanks all for your support!

VIK


Luis Vicente Justo Sarmentero

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Feb 2, 2026, 3:19:41 PM (4 days ago) Feb 2
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well,

After desactivación  SMB1 on samba set-up, the files started to move... I'll try to remove the message to avoid disturbances...

Thanks again!

VIK

John Travell

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Feb 2, 2026, 4:15:02 PM (4 days ago) Feb 2
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One thing to check, what cluster size does Windows think you are using?

One of my contacts has a D-Link box (not on Alt-F) where the filesystem is similarly set, and Windows thinks a 4Kb file is 4Mb. 
I suggest you look at the properties of a file on Windows, noting the size of the file on disk, then copy that file to your NAS and look at the properties of the same file on the NAS. They should be the same, but in my contact's case they are very different. 
Clearly Windows has got it wrong, as the properties of the upper level folder on that NAS claim the used space to be many times larger than the combined device capacity.

John T:
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