C drive 1st drive?

Got an issue that I do not understand. My H67a-UD3H-B3 has five sata slots (0,1,2,3,4). 0 &1 are sata 3 while 2,3 & 4 are sata 2. I have 4 ssd's and 1 dvd. Primary C is plugged to slot 0. Data drive D is plugged to slot 1. Backup C is plugged to slot 2. Backup D is plugged to slot 3. Dvd is plugged to slot 4.

Disk management and Casper backup shows that the first drive is data drive D and the second drive is primary drive C. Why are they reversed? I thought slot 0 was for the OS drive. Can this cause problems?

Ron

How are they showing in the BIOS? Windows, and other Operating Systems, read the BIOS [Basic Input Output System] before they start to determine how to run the motherboard resources available.

In spite of the fact that OS disk not disk 0 I would still attempt to have the OS in Disk0 slot if it can be done. This is because we regularly see the boot files have been derailed to a preceding Primary partition during repairs or reinstall.

The only ways to avoid this is to have WIn7 as the first hard drive, disconnect all other drives during reinstall or repairs, or have all preceding partitions be Logical which cannot accept boot files.

How are they showing in the BIOS?
Not sure as they are listed as p0 Samsung 840 pro, p1 Samsung 840 pro, p2 Mushkin 120dx & p3 mushkin 120dx.

I agree that this is a bit confusing
Absolutely! Unfortunately, things should make sense to me but sometimes they don't.

Gregrocker, that is some interesting reading!
"I would still attempt to have the OS in Disk0 slot if it can be done"
Exactly what my ocd brain keeps telling me but in reality, I cannot (so far) make it happen. I can disconnect the d drive and reboot which will put the os c drive in slot 0 only until I reconnect the d drive.
Oh well, looks like more experimentation needed!

Disk Management - Post a Screen Capture Image

Sorry guys, had an out of town emergency. Here's the disk management.