Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

System Administration Guide: Devices and File Systems
Previous Next

Formatting a Disk

Disks are typically formatted by the manufacturer or reseller. They usually do not need to be reformatted when you install the drive.

A disk must be formatted before you can do the following:

  • Write data to the disk. However, most disks are already formatted.

  • Use the Solaris installation utility to install the system.


Caution - Formatting a disk is a destructive process because it overwrites data on the disk. For this reason, disks are usually formatted only by the manufacturer or reseller. If you think disk defects are the cause of recurring problems, you can use the format utility to do a surface analysis. However, be careful to use only the commands that do not destroy data.


How to Determine if a Disk Is Formatted

  1. Become superuser or assume an equivalent role.
  2. Invoke the format utility.
    # format

    A numbered list of disks is displayed.

  3. Type the number of the disk that you want to check.
    Specify disk (enter its number): 0
  4. Verify that the disk you chose is formatted by noting the following message:
    [disk formatted]
Example 11-2 Determining if a Disk Is Formatted

The following example shows that disk c1t0d0 is formatted.

# format /dev/rdsk/c1*
AVAILABLE DISK SELECTIONS:
       0. /dev/rdsk/c1t0d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /[email protected],0/QLGC,[email protected],10000/[email protected],0
       1. /dev/rdsk/c1t1d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /[email protected],0/QLGC,[email protected],10000/[email protected],0
       2. /dev/rdsk/c1t8d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /[email protected],0/QLGC,[email protected],10000/[email protected],0
       3. /dev/rdsk/c1t9d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /[email protected],0/QLGC,[email protected],10000/[email protected],0
Specify disk (enter its number): 0
selecting /dev/rdsk/c1t0d0s0
[disk formatted]

How to Format a Disk

  1. Become superuser or assume an equivalent role.
  2. Invoke the format utility.
    # format

    A numbered list of disks is displayed.

  3. Type the number of the disk that you want to format.
    Specify disk (enter its number): 0

    Caution - Do not select the system disk. If you format your system disk, you delete the OS and any data on this disk.


  4. To begin formatting the disk, type format at the format> prompt. Confirm the command by typing y.
    format> format
    Ready to format.  Formatting cannot be interrupted
    and takes 23 minutes (estimated). Continue? yes
  5. Verify that the disk format was successful by noting the following messages:
    Beginning format. The current time Tue ABC xx xx:xx:xx xxxx
    
    Formatting...
    done
    
    Verifying media...
            pass 0 - pattern = 0xc6dec6de
       2035/12/18  
    
            pass 1 - pattern = 0x6db6db6d
       2035/12/18  
    
    Total of 0 defective blocks repaired.
  6. Exit the format utility.
    format> quit
Example 11-3 Formatting a Disk

The following example shows how to format the disk c0t6d0.

# format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <SUNW18G cyl 7506 alt 2 hd 19 sec 248
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       1. c0t1d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       2. c0t2d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       3. c0t3d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       4. c0t4d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       5. c0t5d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
       6. c0t6d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /[email protected],0/[email protected],1/[email protected]/[email protected],0
Specify disk (enter its number): 6
selecting c0t6d0
[disk formatted]
format> format
Ready to format.  Formatting cannot be interrupted
and takes 332 minutes (estimated). Continue? y
Beginning format. The current time is Wed Jan  7 16:16:05 2004

Formatting...
   99% complete (00:00:21 remaining) done

Verifying media...
        pass 0 - pattern = 0xc6dec6de
   71132922  

        pass 1 - pattern = 0x6db6db6d
   71132922  

Total of 0 defective blocks repaired.
format> quit
Previous Next

 
 
  Published under the terms fo the Public Documentation License Version 1.01. Design by Interspire