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Differnce ISL and IPL

Regular Advisor

Differnce ISL and IPL

Please anyone help.

what is the difference between ISL and IPL?

Please explain.

Thanks in Advance
Dennis Handly
Acclaimed Contributor

Re: Differnce ISL and IPL

You can look at isl(1M).
A 11.20 document treats them the same:
... the initial program loader (IPL / ISL).
Michal Kapalka (mikap)
Honored Contributor

Re: Differnce ISL and IPL


check for example this link :

Acclaimed Contributor

Re: Differnce ISL and IPL

The ISL/IPL is the initial system (program) loader located on a bootable media, booted from boot console handler:

Main Menu: Enter command or menu > bo 0/0/3/0.0
Interact with IPL (Y, N, or Cancel)?> y

Boot IO Dependent Code (IODC) revision 0

HARD Booted.

ISL Revision A.00.43 Apr 12, 2000


As you can see the system asked for "IPL", so it is more or less the same.

Hope this helps!

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Kranti Mahmud
Honored Contributor

Re: Differnce ISL and IPL

Hi unixguy,

check the below links:

Dont look BACK as U will miss something INFRONT!