Solved C drive 1st drive?

[anaron]

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

 

[Berton]

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.

 

[whs]

The OS drive can be on any port. And windows does not not map them the same way as they are assigned on the board. I agree that this is a bit confusing, but that's the way it is.

 

[gregrocker]

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.

 

[anaron]

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!

 

[Ranger4]

Perhaps you could post a screen shot of your Disc Management. Make sure it includes all your drives & all the details as well.

 

[gregrocker]

http://www.sevenforums.com/tutorial...nt-post-screen-capture-image.html#post2261610

 

[anaron]

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

 

[logicearth]

As long as the physical connect to the HDD/SSD is attached to port 1 for your primary drive then all is well. The logical layout shown in Disk Manager is based on who ever replies first. Disk 0 is just the first drive to reply when the system booted.

Do not concern yourself over this. (The labels in Disk Manager do not correspond to the physical connections.)

 

[mjf]

Connecting SSDs to sata 3 ports and your primary boot drive to sata port 0 is a good idea. The drive letter allocation is not really important and there not a guaranteed one to one relationship between sata port number and the OS drive number. It has been discussed a number of times before. See here
http://support.microsoft.com/kb/937251
and
http://www.sevenforums.com/installa...rt-disk-management-vs-bios-2.html#post1519407

 

[gregrocker]

By no means should any but the System partition ever be marked Active, which points which is booting the OS(es). Mark those data drives Inactive now: http://www.sevenforums.com/tutorials/197157-partition-mark-inactive.html

As long as you know the warnings for problems that can arise if OS drive is not DISK0, you can leave it if you want.

 

[mjf]

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.

To clarify a bit further. Your motherboard and its firmware/BIOS knows nothing about Disk numbers. It knows about sata ports (P0-P4 in your case). You configure your BIOS to boot from ports and it will go through the port ordering sequence you have setup. It will then look in order for an active partition with a bootsector and handover the booting sequence. Once the OS is finally loading the OS will assign disk numbers. So there isn't a Disk 0 slot. There is a sata port 0 slot. The port 0 often does correspond to Disk 0 but not always and it doesn't matter.

And yes you should only have active set for a bootable drive. If you want to BIOS boot say 2 of your SSDs then each would have an active partition.

 

[Layback Bear]

By no means should any but the System partition ever be marked Active, which points which is booting the OS(es). Mark those data drives Inactive now: http://www.sevenforums.com/tutorials/197157-partition-mark-inactive.html

As long as you know the warnings for problems that can arise if OS drive is not DISK0, you can leave it if you want.

 

[anaron]

By no means should any but the System partition ever be marked Active

Gregrocker, I totally missed the data drives being active. Setting as inactive as soon as I get out of here!

Ron

 

[anaron]

Data drives and now inactive. Thanks to gregrocker and mjf for the excellent educational reads. Just got to wrap my mind around the fact that it is what it is and not what I think it ought to be.

Thank you all