I have a 2TiB disk with exFat video on. I discovered that fdisk gives this message:
Welcome to fdisk (util-linux 2.25.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. /dev/sdd: device contains a valid 'ext4' signature, **it's strongly recommended to wipe the device by command wipefs(8)** if this setup is unexpected to avoid possible collisions. Device does not contain a recognized partition table. Created a new DOS disklabel with disk identifier 0x2e78422e. Command (m for Help): p Disk /dev/sdd : 1.8 TiB, 2000398934016 bytes, 3907029168 sectors Units : sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x2e78422e Command (m for Help): m Help: DOS (MBR) a toggle a bootable flag b edit nested BSD disklabel c toggle the dos compatibility flag
- Can I continue to work like this: new write will not destroy anything?
- Can I save MBR with dd if=... of= with 512 bytes?
- What are the action to do to secure the disk without loss (no complete save actually)?
EDIT after comment
sudo lsblk -f /dev/sdd NAME --- FSTYPE --- LABEL --- UUID --- MOUNTPOINT sdd --- ext4 --- 3_HOME_2To --- 449db187-f86f-4a38-bf02-076f0beba3bd --- /2tera