[SunRescue] Max capacity of harddisk supported by SS20

[Gregory Leblanc]

> -----Original Message-----
> From: Mike Hebel [mailto:druaga at pmail.net]
> Sent: Thursday, July 20, 2000 8:38 AM
> To: rescue at ohno.mrbill.net
> Subject: RE: [SunRescue] Max capacity of harddisk supported by SS20
> 
> Is there a FAQ on Openboot Prom revisions?  I have a SS5 with 
> a ROM of 2.15
> and I'm about to re-partition (after backup) my 4 gig SCA 
> drive for more
> space.  (Newbieness caused me to break / and /opt into two separate
> partitions.)
> 
> Am I going to have a problem booting if I make it all one big 
> drive of about
> 4gig?

Possibly.  If you happen to locate your kernel on the first 2GB of the disk,
then you won't have a problem.  If you later patch the kernel, and it ends
up after the first 2GB of disk, then you're SOL.  
I think that the 32-bit SPARCs can only address the first 2GB of disk.  The
UltraSPARCs can address more.
	Grego


> -----Original Message-----
> From: rescue-admin at mrbill.net 
> 
> No, what he means is that the kernel does not suffer from the 2GB
> boundary. It's the OpenBoot PROM (In PC terms: the BIOS). It can't see
> the kernel file if it's beyond the 2GB limit. That means you're OK if
> your root (/) partition is within the first 2GB of the disk.
> 
> Guess wrote:
> 
> > Hi Leblanc,
> >
> > Do u mean newer version of kernel will take care of
> > the 2GB boundary ? May I know which version of kernel
> > is recommended ? Thank you.
> >
> > --- Gregory Leblanc <GLeblanc at cu-portland.edu> wrote:
> > > > -----Original Message-----
> > > > From: Mike Nicewonger
> > > [mailto:twmaster at twmaster.com]
> > > >
> > > > I do not know what the max capacity is but I do
> > > know you can
> > > > use a 9 GB disk
> > > > in the 20.
> > >
> > > 18GB disks will also work internally, assuming that
> > > you can find a 1" SCA
> > > drive.  The only issues are that the PROM can only
> > > address 2GB of the disk,
> > > so the kernel must be placed there to ensure that
> > > things work properly.
> > >       Grego
> > >
> > > > ----- Original Message -----
> > > > From: Guess <guessfirst at yahoo.com>
> > > >
> > > > > Can someone pls tell me what is the maximum
> > > > > harddisk(both internal & external) capacity
> > > supported
> > > > > by SparcStation 20 ? Can I use a 9GB(or even
> > > bigger)
> > > > > HD in this machine ? Thank you.