This morning I wanted to do a test with a second "Sata" Hardisk in my PC, and everything worked smoothly, AROS One booted from the second Hardisk without any problems.
These are the important steps to perform on your PC if you want to install AROS on second Hardisk "without the DualBoot":
- Using a Partition Editor Delete all partitions from the Hardisk you want to use for AROS
- After deleting the partitions, make the Hardisk RAW, this is done with a Partition Editor with the Wipe command (see screenshot), without this procedure many HDs or Pendrives will not Boot, GRUB corrupted.
Wipe does not need to be done for the whole hardisk, it would take a long time, important to do it for the first 500 MB or 1GB. The Wipe will clean the old Bootloder stored on HD well.
- Having done this unplug the primary Hardisk where Windows is installed (to avoid doing damage), and in its place plug in the second Hardisk.
- From the Bios enable STATA to AHCI switching.
Boot AROS from DVD or PendriveLive, run installAROS and install AROS, leave SFS filesystem set (best choice)
- After the installation is finished turn off the PC and connect the 2 Hardsiks (in SATA Mode, no need to set AHCI anymore), the one where you installed AROS you can put it wherever you want, then from the Windows Boot Menu you can choose which one to boot, by default it will boot the ioperative system set to SATA 1
I attach a video showing how to boot my AROS One from the second Hardisk (download the ZIP archive and then watch the video after unpacking it):
https://drive.google.com/file/d/1ulINaQf_fCjhe6J_vl57md3V_Me_mMvI/view?usp=share_link