Hi, I am having a problem (again) with a SATA drive: It is on a friends machine and has been running as a data drive for a few months with no problems. Recently I tryed to install it as the master drive and loaded the operating system onto it, it initially appeared very slow and after a few hours it began to react strangely in that it would sometimes fail to boot, and also icons in my computer were slow to appear etc. Now, admitadly, I did hook the old hard drive (OS still in tact) back up as secondary, and I disabled it in the bios - so when the computer boots it should not read from its boot sector, but in XP the drive is still recognised despite it being disabled in the bios (this used to work fine on a setup I used to have running xp and 2000). So maybe that is causing problems, I dont know. To test the drive further I have installed it on my computer and loaded a clean instal of XP (using windows XPs dual boot facility). So far it hasnt given me any major problems, however it is still very slow to boot at about 1minute 25 seconds (from power on to the user logon screen)- and this is with only the minimum drivers loaded, and a firewall. Now that seems pretty slow to me, considering my SATA drive does it in about 58 seconds. The only other problem I can see is that on the SATA drive, I have to have the "limit to 150MB/s" jumper connected - otherwise I cant get it to run at all, although I have read the motherboard manual, and Hi-speed sata is supported. So I am wondering if anyone knows firstly, is 150mb/s a particularly slow speed for a sata drive, and would that slow the OS load time? Or is it possible there is a problem with the drive itself. And also, if anyone has any info on the 150mb/s limiter I would be greatfull to hear that as well. Thanks in advance for any help, and sorry this post is SO long!!