Three different drives

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I like red!
Sep 26, 2020
Driv Size  Drive Identity     Location:    0      25%     50%     75%     100
---- ----- ---------------------------- ------- ------- ------- ------- -------
  1  1.0TB CT1000MX500SSD1               464.3   468.6   517.7   534.1   516.6
  2  1.0TB CT1000MX500SSD1               434.1   469.6   434.4   478.4   438.0
  3  1.0TB WDC WD1003FZEX-00K3CA0        186.6   171.1   150.1   127.3    91.7
  4  3.0TB HITACHI HUA723030ALA640       150.0   142.2   124.1   103.0    75.1

                  Benchmarked: Friday, 2021-01-01 at 09:20

Interesting that CSM mode doesn't support RAID. I assume the speeds for drive 2 is just a result of the RAID level I'm using.

Why is it my system starts at 1 for the drive number? Everyone else seems to start at 80.

BTW, I had 2 of the Western Digital drives in this system, but was running out of room, so when I upgraded some drives in my NAS, I just put the old one in this system. That difference of 30 is noticeable on this system.
Why is it my system starts at 1 for the drive number? Everyone else seems to start at 80
The "80's" are BIOS designations. When ReadSpeed starts up, it attempts to determine whether the BIOS is recognized any of the system's drives and assigned them BIOS drive numbers which, for hard drives, begin at '80'. Any drives that do not appear to be associated with the BIOS are numbered starting from '1'. It might be that your use of RAID has kept the BIOS from assigning drives. And you mentioned CSM, so that might also be part of what's going on.
My system boots into Windows with UEFI. The other thread with the list of boot menu keys allowed me to not have to change that just to boot into ReadSpeed. When I tried to use Spinrite on this system, I had to do the following:
  1. Turn off the RAID
  2. Turn boot mode to BIOS (Option is hidden with RAID turned on)
  3. Select drive I want to boot from
  4. Once I wanted to go back to Windows, reset the boot order, and turn on RAID (which in turn switches the system back to UEFI)
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