Old thread I see but just came here to say I was just having exactly the same problem as OP, same errors - btrfs drive just would not get recognized and I tried all the steps in this thread. I thought it was done and dusted. Loaded up "sudo fdisk /dev/sdf" ready to format the drive, which threw up the following:
Quote
The device contains 'zfs_member' signature and it will be removed by a write command. See fdisk(8) man page and --wipe option for more detai
ls.
Device does not contain a recognized partition table.
The size of this disk is 2.7 TiB (3000592982016 bytes). DOS partition table format cannot be used on drives for volumes larger than 21990232
55040 bytes for 512-byte sectors. Use GUID partition table format (GPT).
Created a new DOS disklabel with disk identifier 0x078d2cf3.
I hit "w" and wrote the change, then tried lsblk -f and the drive was assigned the correct label and UUID and became mountable.
Need help, btrfs Unmountable: No file system (Cache Drive)
in General Support
Posted
Old thread I see but just came here to say I was just having exactly the same problem as OP, same errors - btrfs drive just would not get recognized and I tried all the steps in this thread. I thought it was done and dusted. Loaded up "sudo fdisk /dev/sdf" ready to format the drive, which threw up the following:
I hit "w" and wrote the change, then tried lsblk -f and the drive was assigned the correct label and UUID and became mountable.