December 5, 2025Dec 5 Hello,Last time i did a reboot of my server, my disk appears to be unmountable. I'm not sure what i'm supposed and how i could recover my data. tower-diagnostics-20251205-1048.zip
December 5, 2025Dec 5 Community Expert There is no partition being detected on that device, post the output from:fdisk -l /dev/nvme0n1
December 5, 2025Dec 5 Author Sure, here : root@Tower:~# fdisk -l /dev/nvme0n1Disk /dev/nvme0n1: 1.82 TiB, 2000398934016 bytes, 3907029168 sectorsDisk model: Samsung SSD 990 PRO 2TB Units: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes
December 5, 2025Dec 5 Community Expert Yep, the partition is gone. You can try to see if the fs signature is still there; if it is, recreating the partition should restore the data, if the signature is also gone, not much that can be done.type sfdisk /dev/nvme0n1, then type 2048 and hit enter and post the output
December 5, 2025Dec 5 Author root@Tower:~# sfdisk /dev/nvme0n1Welcome to sfdisk (util-linux 2.41.2).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.Checking that no-one is using this disk right now ... OKDisk /dev/nvme0n1: 1.82 TiB, 2000398934016 bytes, 3907029168 sectorsDisk model: Samsung SSD 990 PRO 2TB Units: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytessfdisk is going to create a new 'dos' disk label.Use 'label: <name>' before you define a first partitionto override the default.Type 'help' to get more information.>>> 2048Created a new DOS (MBR) disklabel with disk identifier 0x20321956.Created a new partition 1 of type 'Linux' and of size 1.8 TiB.Partition #1 contains a vfat signature.Do you want to remove the signature? [Y]es/[N]o: n/dev/nvme0n1p1 : 2048 3907029167 (1.8T) Linux/dev/nvme0n1p2:
December 5, 2025Dec 5 Community Expert 2 hours ago, Leviathan_sama said:Partition #1 contains a vfat signature.This is not an Unraid supported filesystem, any idea how that signature got there? Only the flash drives uses FAT.
December 5, 2025Dec 5 Author I did an install of Ubuntu server before swapping to Unraid. Idk how it goes there.It worked well for 2 weeks until i did a reboot Edited December 5, 2025Dec 5 by Leviathan_sama
December 5, 2025Dec 5 Community Expert Possibly a device or its firmware issue, since the partition is gone.
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