SUMMARY : SS20 Boot Problem

From: Stephen Johnston (
Date: Wed Nov 22 2000 - 07:32:17 CST

I had just thought this might be the problem, thanks very much, and sorry for
not RTFM'ing more carefully!


Also thanks to Tim Evans


Casper Dik wrote:
> >Having intalled the o/s (2.6 5/98) on an old SS20 with 4 CPUs and 512Mb of RAM -
> >the install worked as expected.
> >
> >When it comes to booting it is reporting being unable to find bootblk! The
> >disks are powered and if I boot single user from CD the ufsboot is present.
> >
> >The boot-device looks strange (not quite exaclty the same as the alias) however
> >if I manually tell it the device it still doesn't work
> The Solaris FAQ says:
> 5.60) I installed Solaris on a big disk, but now booting fails.
> Due to limitations in Openboot PROMs, you can't boot any of the 32bit
> SPARCs (sun4c, sun4m, sun4d) from a root partition that has parts lying
> beyond the 2GB mark on a SCSI disk.
> On systems with really old PROMs (revision 2.5 or less) you need to
> make the root partition smaller than 1GB.
> The Ultra PROMs are capable of this, but Solaris prior to version 2.6
> also has a bug which effectively prevents Ultras from booting from
> large root partitions too. Patch 103640-08 or later fixes this
> for Solaris 2.5.1, so later 2.5.1 HW releases should be OK too.
> Typical error messages include:
> bootblk: can't find the boot program
> boot: cannot find misc/krtld
> Short read. 0x2000 chars read
> Read error.
> --- end of excerpt from the FAQ
> Questions marked with a * or + have been changed or added since
> the FAQ was last posted
> The most recently posted version of the FAQ is available from
> <>

Stephen Johnston                                  Phone: +49 89 32006322
UNIX Systems Manager                              Fax  : +49 89 32006380
European Southern Observatory
Karl-Schwarzschild-Strasse 2
D-85748 Garching bei Muenchen           
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