| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | hdio | 7i | 239 |
| sunos | hdio | 7i | 233 |
| opensolaris | hdio | 7i | 214 |
| redhat | hdio | 7i | 212 |
| php | hdio | 7i | 207 |
| centos | hdio | 7i | 203 |
| hpux | hdio | 7i | 201 |
| xfree86 | hdio | 7i | 193 |
| osx | hdio | 7i | 190 |
| debian | hdio | 7i | 189 |
| minix | hdio | 7i | 188 |
| mojave | hdio | 7i | 186 |
| v7 | hdio | 7i | 171 |
| suse | hdio | 7i | 165 |
| opendarwin | hdio | 7i | 164 |
| freebsd | hdio | 7i | 164 |
| bsd | hdio | 7i | 143 |
| plan9 | hdio | 7i | 142 |
| posix | hdio | 7i | 130 |