AIX boot

Boot Process
Phases of the Boot Process:
Read Only Storage Kernel Init Phase
Motherboard is Checked
Bootlist is found
Boot image is read into memory
Initialization starts
Base Device Configuration Phase
All devices are configured with cfgmgr command
System Boot Phase
Logical volumes are varied on
Paging is started
/etc/inittab is processed

Logical Volume Manager (LVM) Commands for AIX

GlossaryTerm Definition
Journaled File System (JFS) File system that uses a journaled log for faster, more reliable data recovery
Logical Partition (LP) The LV is made up of LPs. The LP corresponds to 1 or more (in the case of mirroring) PPs.
Logical Volume (LV) The VG is subdivided into logical volumes and each LV can have a file system on it.
Physical Partition (PP) All physical volumes are subdivided into pps. PPs are all the same size.
Physical Volume (PV) Disk that is being managed by LVM.
Rootvg Default volume group created during installation. The vg holds the OS filesystems ( /,/usr, /home, /proc /opt, /tmp, /var and swap space )
Volume Group (VG) Area of storage that consists of one or more PVs

inittab in AIX

There are several AIX commands to manipulate the /etc/inittab file without directly editing it. While it is possible to directly edit /etc/inittab, the supported commands for modifying the records in the file are:
lsitab - Lists records in /etc/inittab
chitab - Changes records in /etc/inittab
mkitab - Adds records to /etc/inittab
rmitab - Removes records from /etc/inittab