I have over a dozen 4TB HDDs that were all formatted as:
- NTFS via Windows 2012
- 64KB cluster size
- GPT (not MBR)
- Single Primary partition
- Is not a Dynamic drive
This caused problems mounting under Linux as the old ntfs driver didn't support anything beyond 4KB clusters. After reading up on ntfs-3g, they have added up to 64KB clusters a few years back - and I have a version much newer than the one that added that support.
My problem is lsblk, nor any other utility, nor the OS itself sees
/dev/sda1
Instead, everything sees:
/dev/sda
But, fdisks sees /dev/sda1?!?:
$ sudo fdisk -l /dev/sda
Disk /dev/sda: 3.64 TiB, 4000787030016 bytes, 976754646 sectors
Disk model: 724040ALE640
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x6561f197
Device Boot Start End Sectors Size Id Type
/dev/sda1 1 4294967295 4294967295 16T ee GPT
Some additional commands...
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
...
sda 8:0 0 3.6T 0 disk
nvme1n1 259:0 0 238.5G 0 disk
├─nvme1n1p1 259:1 0 498M 0 part /boot/efi
├─nvme1n1p2 259:2 0 4G 0 part /recovery
├─nvme1n1p3 259:3 0 230G 0 part
│ └─cryptdata 253:0 0 230G 0 crypt
│ └─data-root 253:1 0 230G 0 lvm /
└─nvme1n1p4 259:4 0 4G 0 part
└─cryptswap 253:2 0 4G 0 crypt [SWAP]
$ sudo ntfs-3g.probe -r /dev/sda
NTFS signature is missing.
$ sudo ntfs-3g.probe -r /dev/sda1
Failed to access '/dev/sda1': No such file or directory
Error opening '/dev/sda1': No such file or directory
$ ls -la /dev/sda*
brw-rw---- 1 root disk 8, 0 May 29 21:06 /dev/sda
Why does fdisk see /dev/sda1, but nothing else does?
And yes, the disks work fine under Windows Server 2012 R2. I even loaded up a Windows 10 VirtualBox on Ubuntu 20.10, passed the raw disk /dev/sda to the VM, and Windows 10 saw it immediately and i could browse and edit the disk.
Configuration:
- Ubuntu 20.10
- ntfs-3g 2017.3.23AR.3
