This technology paper "How to ISE Your Drive" gives step-by-step instructions on how to utilize ISE with the SeaTools for Windows utility software.
I got a seagate external drive as a bonus when I purchased my audio system, but unable to use it, because I dont know what password I have to unlock the drive, and I cannot use Windows disk manager to delete the volumes, and re-format the disk. I have tried many tools, like DiskPart, and linux commands, all failed.
Then I found the help from seagate own website, and downloaded the SeaTools for Windows, but still no idea how to use the tool. I tried fix all, which took 6 hours to finish, but still ends up no solution, square 1.
The seagate guide says, do a Advanced Tests, then press F8 when the popup window opens, then find the 32 characters PSID from the back of the drive, enter there, then, another menu Advanced Tools becomes enabled, and you can select SED Crypto Erase, whoray!!