[SunHELP] Ultra5/10 hardware question

[Steve Wingate]

What is the largest disk anyone has "booted" from in an Ultra 5?
keyword=booted from

On Mon, 03 Dec 2001 19:35:11 -0800
"Greg" <gonufer at yahoo.com> wrote:

> On 12/03/01 04:53 PM, Shahid Shahzad-W5106C wrote:
> 
> > Thanks, but I just updated the PROM to the latest but the solaris
> 
> > installation still shows the same size 8062MB instead of 30Gb of the
> 
> > disk. Please let me know if someone has any suggestions.
> 
> 
> You need to be running Solaris 8 10/00 or later to use EIDE drives 
> larger than 32GB on SPARC platforms.  There have never been any firmware 
> fixes for EIDE drive size on any of the mainline Sun platforms, all of 
> the restrictions have been in the OS drivers.  The OpenBoot drivers 
> never had any limitations nor are they used after SunOS takes over the 
> trap table and thus the responsibility for I/O.
> 
> If you've already labeled the disk with the wrong geometry then you'll 
> need to destroy the label by zeroing it with the dd command before the 
> kernel driver will let you re-label the disk.
> 
> Solaris 2.5.1, Solaris 2.6: drives not larger than 8GB
> Solaris 7, Solaris 8: drives not larger than 32GB
> Solaris 8 10/00 and later: drives larger than 32GB
> 
> Drives sold with accurate C/H/S geometries have no OS limitations.  The 
> 20GB EIDE drives sold by Sun have "true" C/H/S geometries and work with 
> the older Solaris releases even though the drive is larger than 8GB. 
> It's not common to find EIDE disks that report a C/H/S geometry over 8GB 
> "over the counter".
> 
> -greg
> 
> 
> 
> 
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