This is a hard drive that doesn't boot even when installed in a nasne. It's the original drive that was built into the nasne. It's not recognized by a PC and can be used as junk or a paperweight. This is the "SONY nasne HDD boot fw1.00 00550066.dlm" file. It's 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 in about 10 minutes with mouse operations. Initial files and how to create them, which are necessary for booting SONY nasne. Also includes explanations of what you need, such as a PC USB memory and a USB/SATA HDD case. This is for those who understand how to replace the HDD from each HP. Only this fw1.00 can boot the nasne after HDD replacement. # There is no shipping of broken HDDs, please prepare your own. # CUHJ-15004 SSD HDD Replacement Repair