Cannot install Windows 7 on Dell Optiplex 755 using RAID 1 with 2TB drives
Posted on 2012-08-13
I have a Dell Optiplex 755 that was originally shipped with WinXP Pro and setup using RAID 1 (Mirrored). I purchased a pair of 2TB hard drives, set them up as RAID 1, and proceeded to install Windows 7 Pro. The installed almost finishes but then gives the following error "Windows Setup could not configure Windows to run on this computer's hardware".
If I don't use RAID and install the OS on a single drive, the install finishes and the system boots correctly.
I have tried using the following RAID settings "RAID Autodetect / AHCI", "RAID Autodetect / ATA" and "RAID ON". I get the same result on all settings.
I even tried installing an image of a working single drive OS and could not get it to boot. (Problem could have been due to the imaging software not installing a bootable image correctly, not sure as I have never used "EaseUS Disk Copy" before)
I did find a statement on the Internet where someone said that the AHCI driver has problems with drives over 2TB, I guess he ment 2TB and above? I am not sure, is this true?
Does anybody know if you can use 2TB set as RAID 1 on this machine, and if not, can I use smaller drivers with Windows 7 Pro such as 1 TB.