[QUOTE=Mastus;2696560]No they don’t, and no it doesn’t count.
I have a few laptops here, and I have changed HDDs and ODDs for them. Just pop them in, and check that they are recognized in BIOS.
If not, check for BIOS updates etc.
HDD(or ODD) firmware reside in the chip in the HDD. So how could you run/update firmware for it if BIOS doesn’t recognize it?[/QUOTE]
Master/slave/cable select for parallel ATA drives in laptops is sometimes set in firmware; this was actually a big issue. If the design of the motherboard could not tolerate a slave drive placed as a master (or a master drive as the slave), and/or if the other drive (HDD or ODD) was set as master or slave, installation of the wrong drive would result in either one or both drives not being recognized. (If that didn’t happen, then the drives would function improperly, with reduced performance or other quirks).
Searching on Google suggests this laptop could come from that era, so it was a worthwhile reply, since we weren’t sure if the replacement drive was D.O.A. then.