I bought an SSD through a local marketplace, and the seller said it was locked by a company through the BIOS. I expected a BitLocker lock, but when I try to format the drive I get an I/O device error. The SSD appears in File Explorer and in Hard Disk Sentinel, where it reports 100% health and performance with plenty of remaining lifetime. However, it is effectively read-only and I cannot write to or erase it. Can SSDs really be locked this way, or is the drive failing?
4 Answers
Try checking the exact model’s documentation for TCG Opal, PSID revert, or a manufacturer secure-erase utility. DiskPart’s clean command may be worth testing, but if it returns an I/O error, Windows probably cannot override the drive’s lock. Do not repeatedly force commands if there is important data on it.
If the seller cannot provide the PSID or proof that the drive was properly decommissioned, treat it as potentially unusable. A company-managed SSD may require a PSID revert, and that permanently destroys the contents. It could also simply be failing, so getting a refund is likely safer than spending much time trying to unlock it.
Read-only mode can also mean the SSD has detected serious write problems and switched itself into a protective state. The goal is to preserve whatever data can still be read. A health tool reporting 100% does not guarantee the controller, NAND, or security configuration is working normally, so I would not rely on that result alone.
Yes, some SSDs support hardware-level security such as TCG Opal or enterprise encryption. A company may have configured a locking range that prevents normal writes, and the drive can show I/O errors when you try to access or erase it. Many drives have a PSID printed on the label. Entering that code with the manufacturer’s secure-erase tool can perform a cryptographic reset, but it erases everything and may not be supported on every model.
That helps—so the PSID is basically the recovery key for resetting the drive?