21

0100 1-OCT-67

On write to the DISK the third
word of the buffer will occasionally have
the second word OR'ed into it.
Sometimes it is being given bad parity, to boot.

Test 12, random number generator,
seems to leave parity errors in about
half the disk. I have left the disk
in that state.

John Sauter

0420 1-OCT-67

While running a new address
tester the disk made a funny sound.
It turned on the "sector address error"
light, and, a few minutes later, "cabnet
warning temperature" and "stator temperature".
It also turned off "unit A operative" and
"unit A". I tried to get 'hold of Dutch
or Leo, waking up people and operators