250GB drives will always show up as 233GB in Windows, since manufacturers and computers define a "gigabye" differently. Manufacturers: 250GB * (1000 MB/GB) * (1000 KB/MB) * (1000bytes/KB) = 250,000,000,000 bytes Computers: 250,000,000,000 bytes /( (1024 bytes/KB) * (1024 KB/MB) * (1024MB/GB) ) = 232.830643653 GBSo you're not actually missing any disk space - it was just never given to you in the first place. And yes - we all know it sucks. Welcome to MSFN.