Drive isn’t connected.

No disk in drive.

Disk is probably blank.

Can’t find an address mark.

Read-verify failed.

Bad address mark (badCksmErr).

Bad address mark (badBtSlpErr).

Can’t find a data mark.

Bad data mark (badDCksum).

Bad data mark (badDBtSlp).

Write underrun occurred.

Drive error (cantStepErr).

Can’t find track 0.

Can’t initialize disk controller chip.

Tried to read side 2 of a disk in a single-sided drive.

Can’t correctly adjust disk speed.

Drive error (seekErr).

Can’t find sector.







Unable to read clock.

Time written did not verify.

Parameter RAM written did not verify.

Validity status is not $A8.





DDP socket error: socket already active; not a well-known socket; socket table full; all dynamic socket numbers in use.

DDP datagram or ALAP data length too big.

No bridge found.

ALAP error attaching/detaching ALAP protocol type: attach error when ALAP protocol is negative, not in range, or already in table, or when table is full; detach error when ALAP protocol type isn’t in table.

ALAP no CTS received after 32 RTS’s, or line sensed in use 32 times (not necessarily caused by collisions).



Driver Open error, port already in use.

Driver Open error, port not configured for this connection.

Operation on a read-only zone.

Desk scrap isn’t initialized.



No data of the requested type.











Sorry, there isn’t enough memory to do that. Try closing some windows or giving JMP a larger application memory size with the Finder’s “Get Info” command.

NIL master pointer.



Attempt to operate on a free block.

Attempt to purge a locked block.









Block is locked.