Sun Microsystems Sun Workstation 100U System Manager's Manual page 155

Sun 100/150 I,nstallation Manual
Power-up and Bootstrap
Waiting for disk to spin up ...
The monitor is trying to boot from a disk. The disk is not ready, so the monitor is
waiting in the hope that the disk is just starting to spin and will become ready soon. If
you get this message when the power has been on for a while, your disk cables are
probably loose or misconnected.
Watchdog reset!
The current program has stopped executing with a "double bus fault". This is
explained in detail in the Motorola 68010 manual; the two most common causes are
that low memory (interrupt vectors) has been overwritten, or the system stack pointer
is pointing to an invalid address. There is a serious bug in your program if this occurs.
What!
You typed a command that the monitor does not recognize. Try again.
Wrote wdata at address addr, but read rdata
The monitor has completed its power-on self test and found a problem in some subsys-
tem. The preceding "Self Test found a problem ... " message describes which part of the
system was in error. This message gives more details about the error.
Wdata
is the
data that was written into part of the system, or which was expected to be there if the
system was funetioning normally.
Addr
is the address where the data was read and/or
written. For memory errors, this is a physieal memory address; for other errors, the
interpretation of this field depends on what subsystem was being tested.
Rdata
is the
data that was read back from addr and was found to be invalid because it was not the
same as
wdata.
This information should be 'written down and reported to your local
Field Service organization, or to Sun Microsystems Field Service. See the section Non-
Critical Error, From St,// Tell
above.
xy: error nn cmd zz
xy: error nn bno bbbbb
xy: init error zz
The monitor is trying to boot from the Xylogics disk and has encountered an error.
The command being executed at the time is defined by the hexadecimal value zz (if
present); the block number is bbbbb (if present), and the particular error is encoded as
nne The error and command can be decoded by looking in the Xylogics manual.
xy: no bad block info
The boot program is trying to read from the Xylogics disk, but can't find the informa-
tion about bad blocks on the disk. It continues, but if the program attempts to read
any bad blocks (whieh have been remapped to elsewhere on the disk), the attempt will
fail.
zero length directory
A standalone program (possibly the boot program) is trying to read a file from disk,
but one of the directories in the path name has no files in it. The file system should be
checked and fixed by using ',ck(8).
Revision H of 12 March 1984
A-13