This is a non-booting HDD that was originally installed in a nasne. It is a genuine part, but it is not recognized by a PC and is considered junk, usable as a paperweight. This is the file "SONY nasne HDD boot fw1.00 00550066.dlm". It is also needed as the initial firmware for a replacement set. You can easily create a nasne boot HDD from Linux Debian. With practice, it can be done easily with a few mouse clicks in about 10 minutes. Initial files and how to create them, necessary for booting SONY nasne. Also includes explanations of what you need, such as a USB memory stick for PC and a USB/SATA HDD case. This is for those who understand how to replace the HDD from each HP. Only this fw1.00 allows nasne to boot after HDD replacement. # No shipping of broken HDDs, please prepare your own. # CUHJ-15004 SSD HDD Replacement Repair