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All the devices are using their files which are located under /dev directory. Most of the devices are configured automatically during the boot up also device files to. On boot time, /sbin/ioinit.rc script will generate  new device files if needed.

• List  all configured  devices.

# ioscan -f

• List spesific device  like  disk/cd-rom etc.

# ioscan -funC disk

• List  all device  under  a path.

#ioscan -funH  0/0/1/0.0.0

• Check  tape driver

# ioscan -funC tape

• Check installed  Network Adapter 

# ioscan -funC lan

• Show detail of  device  file

# lssf /dev/rmt/0mn

• Configure recently connected  disk  or  cdrom driver

# insf -C disk

• Configure recently connected  tape driver

# insf -C tape

• View  all  EFI Driver

#ioscan -eC disk

on from Shell prompt

Shell>map -r -fs -b

• LUN adressing for  SCSI

#ioscan -u

• How  to check major and  minor  number?

#ll  /dev/*

• Check  major  and  minor  number equivalent.

#lsdev |grep 134
Major Number=134
134 -1 vols vxvm
Type-Perm owner-group Major Minor
crw-r--r-- 1 root root 134 0x000001 Jan 2 2015 trace

• Use lssf list device file

#lssf  /dev/rdsk/c0t3d0

How  to create a spesific device file for a  device ?

• Create  a device file cd-rom for  0.3.0  path.

# insf -H 0.3.0 -e

• Create a block device which attached  2.2.0

# mksf -H 2.2.0 -b

• Create a disk device  which major number  13 and minor number 0x0220012

#mknod /dev/pooldisk/disk122 c 13 0x0220012