Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Win 7 - Second SATA or IDE disk unaccessible - shows in BIOS and DM

25 Oct 2010   #1

Windows 7 Ultimate 32bit
Win 7 - Second SATA or IDE disk unaccessible - shows in BIOS and DM

Hi guys, I've been looking for a solution for my problem for a while now... Hope you can help.

I recently got ahold of two used internal discs - SATA WD Caviar SE 200GB and IDE Seagate Barracuda 7200.7 160GB.

I started with Seagate on IDE. Attached it as master, changing my dvd from master to slave. All jumpers OK, devices connected properly, bios configured - can see them all.
Windows boots as normal, dvd works ok but the disc is not showing in Explorer.

Checked Device Manager - it's there OK, went to Disk Management - in the bottom section it shows this disk with two partitions BUT without letters and in black frame. Since I cared little about the data on the disk I removed both volumes and attempted to create New Simple Volume with one partition, drive letter F and quick format to NTFS. After few minutes it came up with "The operation failed to complete because the Disk Management console view is not up to date...".

I checked Device Manager - new device appeared - Unknown Device. At the same time this disk is still showing correctly under Disk Drives.
So now Device Manager is showing two disks properly installed as well as new Unknown Device.
Tried updating Unknown Device's driver using "C:\Windows\System32\DriverStore\FileRepository\di sk.inf_x86_neutral_b431b61a11f8df6c" -
"Windows was unable to install unknown device", tried automatic update as well - no joy.

Went back to Disk Management - this new partition is now showing in blue but has no letter assigned. First i tried "Mark partition as active" - that went ok, then "Change drive letter..." - got the message again - "The operation failed..."
Tried formatting - "An unexpected error has occurred..."
All i can do in Disk Management is to "Delete volume" and try again which i did like a million times with different letters, with and without format etc.

Then i tried with the second disk (SATA Seagate) which I previously formatted using Win 7 installer - exactly the same thing as above

Both discs were tested on another computer...
I tried formatting using Win 7 installer which can see the discs and accepts both of them for installation...
I tried different cables, different slots, different jumper settings (for IDE disk)...
I tried the disks separately and together as well...
I tried updating chipset driver, different bios...
I also tried using diskpart - at one stage I can see the partition but I cant assign the letter to it. It never shows as volume, only as disc.

It's weird that new Unknown Device in Device Manager shows up everytime - right after attempting to create New Simple Volume (which ends with error) and disappears when i delete that volume from Disk Management...

Hope that I am being clear enough
I really want to avoid reinstallation of the system - any ideas?


My System SpecsSystem Spec


 Win 7 - Second SATA or IDE disk unaccessible - shows in BIOS and DM

Thread Tools

Similar help and support threads for2: Win 7 - Second SATA or IDE disk unaccessible - shows in BIOS and DM
Thread Forum
Changed Sata settings in BIOS now disk is invalid Installation & Setup
SATA-1 & SATA3 Bios doesn't see SATA-1 Hardware & Devices
HDD on Asmedia SATA port shows as removable device Hardware & Devices
USB external hard disk shows up as internal fixed disk Hardware & Devices
Solved after change to SATA AHCI mode in BIOS the drive shows removable Drivers
SATA SSD Drive shows up as SCSI - Rediculously baffled... Hardware & Devices
Dual-boot :ubuntu on PATA disk, 7 on SATA disk Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 07:00 AM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33