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I've built a new computer. My old computer had two SATA 3GB drives:

The new computer uses an OCZ Vertex 4 SATA III 2.5" drive (SATA III/6 Gbps) as the boot/main drive (C), the other drives are D and E (there are actually multiple partitions on one of the drives and it's merged through Disk Manager, but that doesn't seem to be indicative of the problem).

The motherboard is an ASUS P9X79 Pro. The OCZ drive is connected to a 6GB port and the two Barracudas are attached to 3GB ports.

When I boot up the computer straight to Windows 8, the Barracuda drives don't appear in Windows Explorer:

Windows Explorer without Barracuda drives showing

Looking in Device Manager shows nothing out of the ordinary, except that the drives simply are not there:

Device Manager without Barracuda drives showing

If I restart the computer, or start the computer and go into the BIOS and go to Advanced/SATA Configuration, they appear in the BIOS:

ASUS P9X79 Pro BIOS with drives showing

If I exit and save the configuration (I'm prompted without changing anything, just going to advanced mode and looking at the SATA display):

ASUS P9X79 BIOS prompt to save

And then boot into Windows 8, the drives appear and function as if they were always there:

Windows Explorer with Barracuda drives showing

The drives work fine at that point.

The BIOS is set up to use AHCI SATA mode (as opposed to disabled, IDE, or RAID):


Although at one point, it was set to IDE, but the problem existed when set in that mode.

It's been pointed out that it could be a power issue. My PSU is a Silverstone Strider Plus ST50F-P 500W ATX 12V v2.3 modular power supply. It's powering:

All of this is in an Antec Three Hundred Two Black Steel ATX Mid Tower Computer Case with Upgraded 2 x USB 3.0 to which I keep an iPod connector connected on the front USB port (with nothing plugged into the other end on startup) as well as a pair of headphones.

That said, what I can do to get the Barracuda drives to be recognized by Windows 8 without having to go into the BIOS every time I start up?

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closed as too localized by slhck Mar 3 '13 at 20:15

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

Power issue perhaps? If you disconnect one of them to lighten the power load, does the remaining drive(s) work as expected? – Ƭᴇcʜιᴇ007 Jan 27 '13 at 15:42
@techie007 Possibly? But by that logic, neither drive should ever appear, no (I know very little about this, please bear with me)?. What's different about the power going into the BIOS before Windows 8 comes up than not? – casperOne Jan 27 '13 at 15:43
Power is not a steady "always on' thing. Especially if you've got a failing or just slightly underpowered PSU. Drive spinup eats a lot of power, stopping in the BIOS may give enough time for power to become steady and turn on all the drives. It's a suggestion of something you can try, unless you've got a spare (larger) PSU and/or motherboard laying around? – Ƭᴇcʜιᴇ007 Jan 27 '13 at 15:48
Also, have you tired another OS (like a Linux LiveCD for example) to see if it behaves the same way? – Ƭᴇcʜιᴇ007 Jan 27 '13 at 15:50
@techie007 No, not offhand. =) I'll try unplugging one of the drives and seeing if it shows. Is it possible that the PSU doesn't have enough power for both drives? If so, how would I detect that case, as I wouldn't be able to tell with certainty if it's the PSU or another reason. – casperOne Jan 27 '13 at 15:50
up vote 0 down vote accepted

As per RockyFord's suggestion, downloading and installing the latest drivers (version 3305) resolved the issue; the hard drives are visible without going to the BIOS setup.

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