New
#11
Actually, Windows since 2003 SP1 has been ready for drives up to 16EB, with NTFS volumes maxing out at 256TB at 64K cluster size (support for drives larger than 2TB came in with NTFS for Windows 2000, as it were, as cluster sizes larger than 4k were supported). NTFS has a limitation based on cluster size, so at 4K cluster sizes the limitation before Windows 2000 was 2TB. MBR also has limitations based on 32bit math and hex - if anyone is curious, those are covered here:
Understanding the 2 TB Limit in Windows Storage - Ask the Core Team - Site Home - TechNet Blogs
Saying Windows 7 not being designed for larger disks is just not accurate. Since Windows 2000 you could have drives up to 256TB if the hardware would support it, and 2003 SP1 increased that via GPT disks to allow volumes/disks up to 16EB in size, again, assuming hardware support and a drive that large.
Lastly, killing that many drives does sound more like a multi-boot issue, or a power cleanliness issue along the rails, rather than being an OS problem. Anything's possible, but that many bad drives does remove a lot of the probables. Anyway, good luck, I've rambled enough.