[SunHELP] SunFire V100 with disks more than 40GB

Rachmad Aryanto-ARACHMA1 Aryanto.Rachmad at motorola.com
Tue Apr 12 08:56:02 CDT 2005

Thanks Andrew,

I think this is just a limitation of the IDE interface regardless of the Sun platform. It has got to do with the limitation of maximum 24 bits LBA addressing in the IDE controller itself. I found one interesting discussion related to this if anyone interested:




-----Original Message-----
From: sunhelp-bounces at sunhelp.org [mailto:sunhelp-bounces at sunhelp.org] On Behalf Of adh at an.bradford.ma.us
Sent: 11 April 2005 18:53
To: sunhelp at sunhelp.org
Subject: Re: [SunHELP] SunFire V100 with disks more than 40GB

" From: Rachmad Aryanto-ARACHMA1 <Aryanto.Rachmad at motorola.com> " 
" Hello guys,
" I just got a SunFire V100 that I bought in Ebay. It came with one " standard hard drive of 40GB. I heard that it can handle up to " maximum 137GB. Would it work if I put 2 hard drives of 120GB each? " 
" I am using Solaris 9. Is it true that I need patches for this OS to " cope with large capacity of disks? Which one would that be? And what " would the maximum capacity I could get for SunFire V100?

i don't know specifically about the v100, but the older ultra 5/10 was limited to 137G/HD by its controller chip, and no patch was involved. they will take dual 120s, and even larger disks though you can only use the first 137G of each.

iirc you might have to enter the disk geometry by hand to make it fit within what s9 format can accept; autodetect usually sets heads at 16 and sectors at 64 but format's limits are much higher.  otoh you can hit format's cylinder limit on autodetect with big disks.

i have also found that what format [on s8 at least] can handle on disks and what it'll let you specify aren't the same.  for instance you can't enter more than 256 sectors but it'll happily autodetect and format 303, or read 303 from a format.dat. ________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought
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