Internal SATA ports don't work as hot-swappable with Intel RST 12.9 drivers on DQ77MK usign latest 0064 BIOS. I have the same problem with both Windows 8.1 x64 (AHCI mode) and Windows 7 x64 (RAID mode). I initially had the same problem with eSATA port, but after updating to RST 12.9 eSATA port works correctly. I could reproduce the problem with older versions of RST and BIOS as well. What is interesting if i don't install Intel RST drivers but use default Windows drivers that comes with Windows 8.1 x64 (i haven't tried with Windows 7 x64) everything works as expected. Enabling SATA port as hot-pluggable in BIOS makes it a removable device and i can eject it using standard Windows functionality. And using Windows driver is not an option if a need to enable RAID configuration.
I'm not sure why first post about this issue was deleted. And i've seen other people companing about the same problem.
DQ77MK with 0064 BIOS, version G39642-500
Windows 8.1 x64 (UEFI enabled), AHCI mode, RST 12.9
Windows 7 x64, RAID mode, RST 12.9
I am sorry to hear you are having problems but let me help you with this.
Based on the information you have provided it seems that this issue is being handled in a different thread.
I recommend you to keep track of the other thread Silvia is working since the information will be provided there.
Here is the link for this: