I've installed an ITE IT8212 ATA IDE RAID controller with a 60GB Primary HDD and a 30GB Secondary HDD, these being the only storage devices in my Asus A7M266/Win98 PC.
Both were FAT32 formatted to their maximum respective amounts. The first gave about 57GB and the second about 28.5GB, which was fine.
I then Ghosted a Win98 image onto the Primary HDD (made from the PC's previous C: partition), and checked that this HDD alone booted to Windows OK, which of course it did.
After connecting the RAID card and both HDDs, and auto-configuring the RAID 1 (mirror) setup, it correctly reports that there are 2 HDDs on Array 0, and that the Array size is 28.5GB.
Is it OK that it reports the Array size to be the size of the smallest of the 2 partitions? I'd read that you should use physical disks, or partitions of the same size. If it's simply only using half of the Primary drive, to match the smaller second drive, then I'm OK with this.
2nd questions, and most important: as Windows explorer reports just one drive (C:) is present, and that the RAID software confirms that the Array is setup correctly, how can I really be sure that the mirror disk (Secondary) is being written to, and therefore, really backing up all data?
I'd though of removing the Secondary HDD, fitting it alone into another CPU, and checking it boots up to an identical, and up to date configuration that matches the PC I removed it from.