I installed a hard drive from an old computer in my present machine and until recently it has worked without problems but now, more often than not, it is reported as missing when the machine starts up. When they drive is “not available” and I run an AVG virus scan it begins by reporting that the partition table (MBR) has changed. When the drive is available, this message does not appear. I therefore assume that the message is in some way related to the unavailability of the drive.
My master drive has a SATA connector and the second one is PATA and its jumpers are set as the slave.
How can I stop the erratic unavailability of my second drive?