| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | hdio | 7i | 503 |
| opensolaris | hdio | 7i | 492 |
| centos | hdio | 7i | 442 |
| redhat | hdio | 7i | 442 |
| sunos | hdio | 7i | 436 |
| mojave | hdio | 7i | 424 |
| xfree86 | hdio | 7i | 423 |
| php | hdio | 7i | 417 |
| minix | hdio | 7i | 417 |
| hpux | hdio | 7i | 410 |
| debian | hdio | 7i | 404 |
| v7 | hdio | 7i | 385 |
| opendarwin | hdio | 7i | 383 |
| suse | hdio | 7i | 382 |
| osx | hdio | 7i | 380 |
| freebsd | hdio | 7i | 306 |
| bsd | hdio | 7i | 305 |
| plan9 | hdio | 7i | 288 |
| posix | hdio | 7i | 278 |