This leaves "ghost" data in previously used blocks, creating a security hole.
When it comes to retiring or repurposing an NVMe drive, old habits die hard. If you are still using tools like DBAN or standard "shred" utilities designed for spinning hard drives (HDDs), you aren't just wasting time—you are potentially shortening the lifespan of your storage. nvme format secure erase
In NVMe, the command (opcode 0x80 ) is the primary way to perform a secure erase — but it’s not identical to ATA Secure Erase. This leaves "ghost" data in previously used blocks,
nvme security-send /dev/nvme0 --nvmsid # if PSID available nvme format secure erase