From: sjt@enlil.museum.upenn.edu (Steve Tinney) Subject: Re: SLS 1.3 with Ultrastore 34 Image Date: 22 Sep 1993 15:25:40 GMT
Steve Smoot (smoot@elmer-fudd.cs.berkeley.edu) wrote:
: Hi,
: I;m trying to bring up SLS (hot off of tsx-11) on a machine with
: a Ultrastore 34f. I got Image.Ultrastor, and am having a problem.
: It dies, unable to mount root device.
: I modified Image.Ultrastor as per SCSI-howto: Subection B4,
: (hack a couple of bytes.) But it did no good.
: Has anyone gotten this to work?
: -s
: Here is the suggestion in the HOWTO:
: 4. The bootable kernel for an ALPHA driver does not work,
: resulting in a "kernel panic : cannot mount root device"
: message, or it does not work with your Linux distribution.
: You'll need to edit the binary image of the kernel (before
: or after writing it out to disk), and modify a few two byte
: fields (little endian) to gurantee that it will work on your
: system.
: 1. default swap device at offset 502, this should be set to 0
: 2. ram disk size at offset 504, this should be set to the size
: of the boot floppy in K - ie, 5.25" = 1200, 3.5" = 1440.
: This means the bytes are
: 3.5" : 0xA0 0x05
: 5.25" : 0xB0 0x04
: 3. root device offset at 508, this should be 0, ie the boot
: device.
: Here is the code I used to do this:
: main(){
: FILE *fp,*out;
: unsigned char c,c2; int i;
: fp=fopen("Image.UltraStor","r");
: out=fopen("NewImage","w");
: c=getc(fp);c2=getc(fp);
: for(i=0; !feof(fp); i++) {
: if (i>509) {
: putc(c,out);putc(c2,out);
: } else if (i==502) {
: putc(0,out);putc(0,out);
: } else if (i==504) {
: putc(160,out);putc(5,out);
: } else if (i==508) {
: putc(0,out);putc(0,out);
: } else {
: putc(c,out);putc(c2,out);
: }
: c=getc(fp); c2=getc(fp);
: }
: fclose(fp);
: fclose(out);
: }
: Seems like it should have worked...
I tried to mail, but no luck. The loop counter in your code is wrong, but
even when Image.Ultrastor is changed correctly (verified with cmp -l)
I can't switch to a root disk properly. No matter. When I reset the IRQ
and Host-initiated sync to factory defaults and changed the mailbox
address to 340h, as per a response elsewhere in comp.linux.land, both
the new slackware boot/install and the tamu boot/install recognize
the card (Ultrastor 34F) correctly. I was able to fdisk, make the fs and
load the tamu package. Then I had to come to work. Seems like the
distributions can be made to work. Sounds like the mailbox change
is the crucial one: this should be in the SCSI Howto and/or the faq
and/or the installation readme's in the packages.
Steve