diff --git a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml index 126a788849..d434d1a40a 100644 --- a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml +++ b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml @@ -1,7 +1,7 @@ @@ -177,7 +177,7 @@ wcd before 4.0-RELEASE. - SCSI hard drives + SCSI hard drives and USB Mass storage devices da from 3.0-RELEASE, sd before 3.0-RELEASE. @@ -223,6 +223,11 @@ + All the drives attached through a specific driver are + numbered starting at 0. So the first IDE drive would be + ad0. You seldom need to use + these devices. + Slices and Partitions slices @@ -231,17 +236,31 @@ Physical disks usually contain slices, unless they are dangerously dedicated. Slice numbers follow - the device name, prefixed with an s: - da0s1. + the device name, prefixed with an s, + starting at 1. So da0s1 + is the first slice on the first SCSI drive. There can only be + four physical slices on a disk, but you can have logical + slices inside physical slices of the appropriate type. These + extended slices are numbered starting at 5, so + ad0s5 is the first + extended slice on a disk. These devices are used by file + systems that expect to occupy a slice. Slices, dangerously dedicated physical drives, and other drives contain partitions, which are represented as letters from a to h. - b is reserved for swap partitions, and - c is an unused partition the size of the - entire slice or drive. This is explained in . + This letter is appended to the device name, so + da0a is the a partition on + the first da drive, which is dangerously dedicated. + ad1s3e is the fifth partition + in the third slice of the second IDE disk drive. + + The boot code expects partition a to be + the root partition. Partition b is normally + reserved for swap partitions, and c is an + unused partition the size of the entire slice or drive. This + is explained in .