diskinfo.1m (2010 09)

d
diskinfo(1M) diskinfo(1M)
NAME
diskinfo - describe characteristics of a disk device
SYNOPSIS
/usr/sbin/diskinfo
[-b-v] character_devicefile
DESCRIPTION
The
diskinfo command determines whether the character special file named by character_devicefile is
associated with a SCSI or floppy disk drive. If so,
diskinfo summarizes the disk’s characteristics.
The
diskinfo command displays information about the following characteristics of disk drives:
Vendor name Manufacturer of the drive (SCSI only)
Product ID Product identification number or ASCII name
Type Floppy or SCSI classification for the device
Disk Size of disk specified in bytes
Sector Specified as bytes per sector
Both the size of disk and bytes per sector represent formatted media.
Options
The
diskinfo command recognizes the following options:
-b Return the size of the disk in 1024-byte sectors.
-v Display a verbose summary of all of the information available from the device. For floppy
drives, this option has no effect.
SCSI disk devices return the following:
Vendor and product ID
Device type
Size (in bytes and in logical blocks)
Bytes per sector
Revision level
SCSI conformance level data
DIAGNOSTICS
Most of the diagnostic messages from diskinfo are self-explanatory. However, one diagnostic message
deserves further clarification. If the diskinfo command fails to access the lunpath corresponding to a
given special file, it displays the following diagnostics data, which contains device identification and capa-
bility information:
device type 127 (unknown); device is inaccessible
iso ecma ansi rmb dtq resv rdf
WARNINGS
As of release 10.20 of HP-UX, certain IDE devices, CD-ROMs in particular, will respond to
diskinfo
inquiries as if they were SCSI devices. Therefore, the text "SCSI describe" in the output of the
diskinfo command does not definitively mean that the disk is in fact a SCSI drive (especially in the
case of CD-ROMs). Use ioscan -fn, to check which type of INTERFACE node, SCSI or IDE, the
device’s hardware path lies beneath, in order to definitively determine a drive’s interface.
DEPENDENCIES
General
The
diskinfo command supports floppy and HP SCSI disk devices.
SCSI Devices
The SCSI specification provides for a wide variety of device-dependent formats. For non-HP devices,
diskinfo may be unable to interpret all of the data returned by the device. Refer to the drive operating
manual accompanying the unit for more information.
AUTHOR
diskinfo was developed by HP.
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1