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: New External HDD Shows As SCSI in Dev. Mngr. IDE in BIOS

07 Jun 2016   #1
Ex_Brit

Win 7 Ult SP1/Win 10 Pro (all x64)
 
 
New External HDD Shows As SCSI in Dev. Mngr. IDE in BIOS

First of all the BIOS is set to AHCI.
All drivers are up to date and yes I've tried uninstalling controller drivers, the drive itself to no avail.
It's a 3TB LaCie eSata GPT volume (so Windows would accept an over-2TB drive), formatted NTFS (4 partitions).
It replaces a LaCie 1TB one which suddenly conked out - which was connected in exactly the same manner and showed OK as an ATA drive and as an HDD in the BIOS.
Furthermore that ATA Channel is now running at "Ultra DMA Mode 0" as distinct from Ultra DMA 6 with the old drive. Also the drive shows now as SATA I during the boot, before it was showing SATA II
I set AHCI recently with the OS already in place, so that may be a partial cause.
Any ideas to remedy this situation, or isn't it dire? I did some searching and found similar threads which I'm afraid didn't answer anything.
(See my system details & attached pic for more info).




Attached Thumbnails
New External HDD Shows As SCSI in Dev. Mngr. IDE in BIOS-capture.jpg  
My System SpecsSystem Spec
.
08 Jun 2016   #2
Ex_Brit

Win 7 Ult SP1/Win 10 Pro (all x64)
 
 

Further investigation and exhaustive online research show that, under Storage Controllers, the Marvell 91xx SATA 6G Controller is to blame.
I have now set Windows to never install driver updates from WU automatically.
It's uninstalled and now during boot my external drive shows as SATA I - incorrectly (should be SATA II) but at least it's recognised..
It's now taken care of through an extra item under IDE/ATA/ATAPI controllers as in pic below.
But I can't seem to improve on transfer speeds in those 2 ATA Channels that alternate between Multi-Word DMA and Ultra DMA 0.
That stumps me and am wondering if I should perhaps scrap AHCI and return to IDE.


Attached Thumbnails
New External HDD Shows As SCSI in Dev. Mngr. IDE in BIOS-capture.jpg  
My System SpecsSystem Spec
Reply

 New External HDD Shows As SCSI in Dev. Mngr. IDE in BIOS




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
12gb ram shows in bios, only 4,6,or 8 usable shows in windows
Hi guys. I just upgraded my processor to an AMD 8350. It replaced my Phenom. This is the 3rd day the new processor has been in the computer. First two days everything went fine. Ran Prime 95 and IBT to make sure i was up and stable. This morning (3rd day) got up, turned on the computer, and now i...
Hardware & Devices
Dell 490 BIOS & Win 7 Pro not seeing 2nd Xeon. SiSoft shows it.
I have the exact same problem others have posted here with no solutions listed... Issue: Upgraded to Win7 Pro x64 from Home Premium x64 (Anytime Upgrade online), specifically to add second physical processor... Used MSCONFIG and EasyBCD 2.2 to "force" Windows to look for more cores... nada!...
Hardware & Devices
Can't boot - SSD shows up in BIOS but not in the recovery mode
Hello everyone, My Zenbook crashed yesterday when I clicked OK to a "LiveUpdate" pop-up on my desktop. Guess it was from Asus but I'm not sure, as the pop-up didn't contain any text... When I boot it gets to the (pulsating) Windows logo - after that I just get a black screen with a movable...
Backup and Restore
wd caviar green shows up in bios only
using 32 bit home premium win7 installed on 320gb wd. Installed a 500gb wd caviar green . the bios setup sees it as the 4th drive and the smart NCQ says not supported transfermode says P10 0 does not show up in devices or...
Hardware & Devices
SATA SSD Drive shows up as SCSI - Rediculously baffled...
Hey guys, Ill try and keep this straight and to the point but at this point myself, intel, and dell are baffled. I have a Dell XPS730 with the Nvidia Nforce 790i chipset. I run two 500 gig SATA drives under RAID 0. I recently installed an Intel X25 80 gig SSD and have ran into problems. ...
Hardware & Devices
Connecting SCSI Hard Drive to my external enclsoure?
Ok I have a external enclosure that is IDE / Sata , I have 2 hard drives I'm not using , there both SCSI 10,000 rpm Hard Drives, my question is how can I connect one of them to my external enclosure so I can connect em to my USB
Hardware & Devices


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 13:23.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App