<s>
Guru	B-Device
Meditation	I-Device
started	O
as	O
an	O
error	O
notice	O
displayed	O
by	O
the	O
Amiga	B-Device
computer	I-Device
when	O
it	O
crashes	B-General_Concept
.	O
</s>
<s>
It	O
is	O
now	O
also	O
used	O
by	O
Varnish	B-Language
,	O
a	O
software	O
component	O
used	O
by	O
many	O
content-heavy	O
websites	O
.	O
</s>
<s>
This	O
has	O
led	O
to	O
many	O
internet	O
users	O
seeing	O
a	O
"	O
Guru	B-Device
Meditation	I-Device
"	O
message	O
(	O
or	O
the	O
variant	O
"	O
Guru	O
Mediation	O
"	O
)	O
when	O
these	O
websites	O
suffer	O
crashes	B-General_Concept
or	O
other	O
issues	O
.	O
</s>
<s>
It	O
is	O
analogous	O
to	O
the	O
"	O
Blue	O
Screen	O
of	O
Death	O
"	O
in	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
systems	I-Application
,	O
or	O
a	O
kernel	B-Operating_System
panic	I-Operating_System
in	O
Unix	B-Operating_System
.	O
</s>
<s>
It	O
has	O
also	O
been	O
used	O
as	O
a	O
message	O
for	O
unrecoverable	O
errors	O
in	O
software	O
packages	O
such	O
as	O
VirtualBox	B-Operating_System
and	O
other	O
operating	B-General_Concept
systems	I-General_Concept
(	O
see	O
Legacy	O
section	O
below	O
)	O
.	O
</s>
<s>
The	O
term	O
"	O
Guru	B-Device
Meditation	I-Device
Error	O
"	O
originated	O
as	O
an	O
in-house	O
joke	O
in	O
Amiga	B-Device
's	O
early	O
days	O
.	O
</s>
<s>
The	O
company	O
had	O
a	O
product	O
called	O
the	O
Joyboard	B-Device
for	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
home	B-Device
video	I-Device
game	I-Device
console	I-Device
,	O
a	O
game	O
controller	O
much	O
like	O
a	O
joystick	B-Device
but	O
operated	O
by	O
the	O
feet	O
,	O
similar	O
to	O
the	O
Wii	O
Balance	O
Board	O
.	O
</s>
<s>
Early	O
in	O
the	O
development	O
of	O
the	O
Amiga	B-Device
computer	I-Device
operating	B-General_Concept
system	I-General_Concept
,	O
the	O
company	O
's	O
developers	O
became	O
so	O
frustrated	O
with	O
the	O
system	O
's	O
frequent	O
crashes	B-General_Concept
that	O
,	O
as	O
a	O
relaxation	O
technique	O
,	O
a	O
game	O
was	O
developed	O
where	O
a	O
person	O
would	O
sit	O
cross-legged	O
on	O
the	O
Joyboard	B-Device
,	O
resembling	O
an	O
Indian	O
guru	O
.	O
</s>
<s>
If	O
the	O
player	O
moved	O
too	O
much	O
,	O
a	O
"	O
guru	B-Device
meditation	I-Device
"	O
error	O
occurred	O
.	O
</s>
<s>
Only	O
highly	O
technically	O
adept	O
Amiga	B-Device
users	O
would	O
know	O
,	O
for	O
example	O
,	O
that	O
exception	O
3	O
was	O
an	O
address	O
error	O
,	O
and	O
meant	O
the	O
program	O
was	O
accessing	O
a	O
word	O
on	O
an	O
unaligned	O
boundary	O
.	O
</s>
<s>
Users	O
without	O
this	O
specialized	O
knowledge	O
would	O
have	O
no	O
recourse	O
but	O
to	O
look	O
for	O
a	O
"	O
Guru	O
"	O
or	O
to	O
simply	O
reboot	B-Operating_System
the	O
machine	O
and	O
hope	O
for	O
the	O
best	O
.	O
</s>
<s>
When	O
a	O
Guru	B-Device
Meditation	I-Device
is	O
displayed	O
,	O
the	O
options	O
are	O
to	O
reboot	B-Operating_System
by	O
pressing	O
the	O
left	O
mouse	O
button	O
,	O
or	O
to	O
invoke	O
ROMWack	O
by	O
pressing	O
the	O
right	O
mouse	O
button	O
or	O
to	O
manually	O
reboot	B-Operating_System
.	O
</s>
<s>
ROMWack	O
is	O
a	O
minimalist	O
debugger	B-Application
built	O
into	O
the	O
operating	B-General_Concept
system	I-General_Concept
which	O
is	O
accessible	O
by	O
connecting	O
a	O
9600	O
bit/s	O
terminal	O
to	O
the	O
serial	B-Protocol
port	I-Protocol
.	O
</s>
<s>
Its	O
border	O
and	O
text	O
are	O
red	O
for	O
a	O
normal	O
Guru	B-Device
Meditation	I-Device
,	O
or	O
green/yellow	O
for	O
a	O
Recoverable	O
Alert	O
,	O
another	O
kind	O
of	O
Guru	B-Device
Meditation	I-Device
.	O
</s>
<s>
In	O
AmigaOS	B-Application
1.x	O
,	O
programmed	O
in	O
ROMs	B-Device
known	O
as	O
Kickstart	B-Device
1.1	O
,	O
1.2	O
and	O
1.3	O
,	O
the	O
errors	O
are	O
always	O
red	O
.	O
</s>
<s>
In	O
AmigaOS	B-Application
2.x	O
and	O
3.x	O
,	O
recoverable	O
alerts	O
are	O
yellow	O
,	O
except	O
for	O
some	O
very	O
early	O
versions	O
of	O
2.x	O
where	O
they	O
were	O
green	O
.	O
</s>
<s>
Dead-end	O
alerts	O
are	O
always	O
red	O
and	O
terminal	O
in	O
all	O
OS	O
versions	O
except	O
in	O
a	O
rare	O
series	O
of	O
events	O
,	O
as	O
in	O
when	O
a	O
deprecated	O
Kickstart	B-Device
(	O
example	O
:	O
1.1	O
)	O
program	O
conditionally	O
boots	O
from	O
disk	O
on	O
a	O
more	O
advanced	O
Kickstart	B-Device
3.x	O
ROM	B-Device
Amiga	B-Device
running	O
in	O
compatibility	O
mode	O
(	O
therefore	O
eschewing	O
the	O
on-disk	O
OS	O
)	O
and	O
crashes	B-General_Concept
with	O
a	O
red	O
Guru	B-Device
Meditation	I-Device
but	O
subsequently	O
restores	O
itself	O
by	O
pressing	O
the	O
left	O
mouse	O
button	O
,	O
the	O
newer	O
Kickstart	B-Device
recognizing	O
an	O
inadvised	O
low	O
level	O
chipset	O
call	O
for	O
the	O
older	O
ROM	B-Device
directly	O
poking	O
the	O
hardware	O
,	O
and	O
addressing	O
it	O
.	O
</s>
<s>
The	O
error	O
is	O
displayed	O
as	O
two	O
fields	B-Application
,	O
separated	O
by	O
a	O
period	O
.	O
</s>
<s>
If	O
the	O
cause	O
of	O
the	O
crash	B-General_Concept
is	O
uncertain	O
,	O
this	O
number	O
is	O
rendered	O
as	O
48454C50	O
,	O
which	O
stands	O
for	O
"	O
HELP	O
"	O
in	O
hexadecimal	O
ASCII	B-Protocol
characters	I-Protocol
(	O
48	O
=	O
H	O
,	O
45	O
=	O
E	B-Application
,	O
4C	O
=	O
L	O
,	O
50	O
=P	O
)	O
.	O
</s>
<s>
There	O
was	O
a	O
commercially	O
available	O
error	O
handler	O
for	O
AmigaOS	B-Application
,	O
before	O
version	O
2.04	O
,	O
called	O
GOMF	O
(	O
Get	O
Outta	O
My	O
Face	O
)	O
made	O
by	O
Hypertek/Silicon	O
Springs	O
Development	O
corp	O
.	O
</s>
<s>
It	O
was	O
able	O
to	O
deal	O
with	O
many	O
kinds	O
of	O
errors	O
and	O
gave	O
the	O
user	O
a	O
choice	O
to	O
either	O
remove	O
the	O
offending	O
process	O
and	O
associated	O
screen	O
,	O
or	O
allow	O
the	O
machine	O
to	O
show	O
the	O
Guru	B-Device
Meditation	I-Device
.	O
</s>
<s>
Recoverable	O
Alerts	O
are	O
non-critical	O
crashes	B-General_Concept
in	O
the	O
computer	O
system	O
.	O
</s>
<s>
In	O
most	O
cases	O
,	O
it	O
is	O
possible	O
to	O
resume	O
work	O
and	O
save	O
files	O
after	O
a	O
Recoverable	O
Alert	O
,	O
while	O
a	O
normal	O
,	O
red	O
Guru	B-Device
Meditation	I-Device
always	O
results	O
in	O
an	O
immediate	O
reboot	B-Operating_System
.	O
</s>
<s>
It	O
is	O
,	O
however	O
,	O
still	O
recommended	O
to	O
reboot	B-Operating_System
as	O
soon	O
as	O
possible	O
after	O
encountering	O
a	O
Recoverable	O
Alert	O
,	O
because	O
the	O
system	O
may	O
be	O
in	O
an	O
unpredictable	O
state	O
that	O
can	O
cause	O
data	O
corruption	O
.	O
</s>
<s>
AmigaOS	B-Application
versions	O
4.0	O
and	O
onwards	O
replaced	O
"	O
Guru	B-Device
Meditation	I-Device
"	O
with	O
"	O
Grim	B-Device
Reaper	I-Device
"	O
,	O
but	O
briefly	O
mentions	O
the	O
Guru	B-Device
Meditation	I-Device
number	O
in	O
the	O
prompt	O
box	O
.	O
</s>
<s>
MorphOS	B-Operating_System
displays	O
an	O
"	O
Application	O
Is	O
Meditating	O
"	O
error	O
message	O
.	O
</s>
<s>
Attempting	O
to	O
close	O
the	O
application	O
may	O
revive	O
the	O
operating	B-General_Concept
system	I-General_Concept
,	O
but	O
restarting	O
is	O
still	O
recommended	O
.	O
</s>
<s>
Varnish	B-Language
references	O
Guru	B-Device
Meditation	I-Device
for	O
severe	O
errors	O
.	O
</s>
<s>
The	O
ESP8266	B-Device
and	O
ESP32	B-Device
microcontrollers	O
will	O
display	O
"	O
Guru	B-Device
Meditation	I-Device
Error	O
:	O
Core	O
X	O
panic'ed	O
"	O
(	O
where	O
X	O
is	O
0	O
or	O
1	O
depending	O
on	O
which	O
core	O
crashed	O
)	O
along	O
with	O
a	O
core	B-Error_Name
dump	I-Error_Name
and	O
stack	B-Language
trace	I-Language
.	O
</s>
<s>
VirtualBox	B-Operating_System
uses	O
the	O
term	O
"	O
Guru	B-Device
Meditation	I-Device
"	O
for	O
severe	O
errors	O
in	O
the	O
virtual	O
machine	O
monitor	O
,	O
for	O
example	O
caused	O
by	O
a	O
triple	B-Error_Name
fault	I-Error_Name
in	O
the	O
virtual	O
machine	O
.	O
</s>
<s>
E23	B-Application
displays	O
a	O
"	O
Guru	B-Device
Meditation	I-Device
"	O
and	O
restarts	O
when	O
severe	O
errors	O
occur	O
.	O
</s>
<s>
NewPipe	O
,	O
a	O
free	O
and	O
open-source	O
Android	O
application	O
for	O
YouTube	O
and	O
SoundCloud	O
,	O
displays	O
a	O
"	O
Guru	B-Device
Meditation	I-Device
"	O
when	O
an	O
error	O
occurs	O
.	O
</s>
