I would say this is normal. I used a Toshiba 1 TB HDWD110 7200 RPM with 64 MB buffer. With 231 GB of games, things slowed down after each addition. Error code 07 would pop up on cold boot appropriately 1 in every 15 . If cycled quickly and the HDD did not spin down everything was fine. The system was using a TSOP X3 BIOS 5035 F and G 80 wire. I have moved to a PATA to SD card interface with with X2 BIOS on F only 40 wire with the same data no issue. System boot time is much better.