Problems with QIC-02 cartridge tape drives
You may encounter the following problems with
QIC-02 cartridge tape drives:
QIC-02 cartridge tape drive not recognized at bootup
The system recognizes a cartridge tape drive if it displays
a message similar to this at boot time:
%tape 0x338-0x33C 05 1 type=wangtek
If it cannot find the tape drive,
the system displays a message such as this:
NOTICE: ct: Tape controller (type=wangtek) not found
For a cartridge tape drive:
Verify that the tape controller card is physically configured
to the base address that you gave when you installed the tape
If necessary, reinstall the drive and change the parameters.
Verify that the tape controller is seated properly on the
motherboard. If necessary, you may need to insert the
controller in a different slot.
Some tape drives (particularly external drives) require
that the drive be attached to the tape controller and powered
on at boot time.
Verify that the cartridge tape drive is supported by SCO OpenServer.
See the SCO list of compatible hardware for a list of the compatible tape drives.
If your system still does not recognize the tape controller
card at boot time,
see your hardware documentation.
Use of interrupts with the Archive drive
Archive drives using the SC402 controller on
ISA bus machines do not use the default type A
interrupt 4. Reset the jumpers on the controller card or
use the mkdev tape command to change the
Settings required by the Olivetti drive
The Olivetti tape controller on
ISA bus machines uses
the following settings:
Base I/O address (hex)
Bad octal digit
After installing a cartridge tape drive,
the system may display the following message
during the kernel relink process:
/etc/conf/pack.d/ct/space.c line 46 bad octal digit
To fix this problem, verify that the base address for the tape
controller is entered with a leading ``0x'' rather than a trailing ``H''.
Install the tape again to modify the cartridge tape parameters.
Tape commands hang
If the tape drive hangs when you test it with the command
Verify that the cartridge tape controller card is physically
configured for the DMA value that you gave when you ran
To fix this, either physically reconfigure the tape controller
DMA setting to agree with the address that you gave with
mkdev tape, or run mkdev tape
again and specify the DMA value on the tape controller.
Do the same for the interrupt vector.
Verify that the cable between the tape controller and the
tape drive is properly attached.
If the tape reset command still hangs,
see your hardware documentation.
Cannot open /dev/rct0 error message
command (or other commands which access the tape drive)
fail to write the contents of a directory
to a tape, and the system displays the following message:
Cannot open /dev/rct0
To correct the problem:
Use hwconfig to verify that the interrupt
vector for a cartridge tape drive does not conflict with
any other device on your system.
``QIC-02 cartridge tape drive not recognized at bootup''
for information on the available interrupt vectors.
To change the interrupt vector, run mkdev tape
and indicate a new interrupt vector value.
Verify that the actual physical interrupt (IRQ)
setting on a cartridge tape controller card agrees
with the interrupt vector that you specified with
Make sure that the proper device for the tape drive
is located in the
The output should look like this:
crw-rw-rw 1 root root 10, 0 Feb 14 12:00 rct0
(The major device number (10) may differ.)
If the listing of /dev
does not contain a line similar to this, run
mkdev tape again to create the device.
Verify that all cables are connected correctly.
If the tar command still does not work, the tape
may be broken. See your hardware documentation.
Problems with SCSI tape drives
General problems with tape drives
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 -- 03 June 2005