I had 4xWD 4TB drives arranged in two RAID 0 raids. I wanted to reset one of the RAIDS to non-raid while also doing a clean installation - my operating system is on a single SSD drive separate to the above raids.
I tried doing both resetting to non-raid and deleting the raid in the BIOS. The BIOS does correctly detect the drives as 4TB. No matter what I do in Windows, the drive is always detected as having a capacity of 1677.90GB. I’ve also run the WD Lifeguard Diagnostics which also correctly reports the drive size as 4001GB.
I have also tried the write-zeros operation choosing the quick option which writes to the first and last parts of the drive. This was unsuccessful in correcting the drive size reported to windows.
I am currently running the complete write-zeros operation for the whole disk which it reports is going to take about 7 hours.
Is there not a quicker way of having Windows detect the correct drive size? I am happy to do a complete reinstall of Windows 7 (64 bit). Install Windows 8. Put the drive onto a different SATA port or even run around in circles with my hands up in the air if it gets the job done quicker.