How can you determine whether a SATA 3.5 disk has its advertised cache? Seagate ST3750528AS with 32mb advertised cache. Using a program such as "DiskCheck" shows this disk to have 0 buffers; whereas my Seagate ST320620AS shows that it has its advertised 16mb buffers. Is the program not reporting correctly or is the cache acually missing? I am trying to utilize a free program since it makes little sense to spend $35 for a one time use just to confirm the presence of a vendor cache advertisement. The 750GB is installed as a 2nd internal disk on a XP Pro SP3 desktop. Any help is appreciated. So far, no response from Seagate. Update: Response from Seagate is that the reporting facility on the drive is disabled from the factory so the reporting of 0 does not indicate the cache is nor working. If the drive passes their utility testing, then the cache is working correctly. Case closed.