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How to erase tape data in unix V4.0 D?

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# 1  
Old 10-02-2010
How to erase tape data in unix V4.0 D?
hi!
my computer is...
System: Digital Personal Workstation 433a
Processor: Digital Alpha 21164, 433 MHz
Memory: 64 MB
OS: Digital Unix Console (SRM), Digital Unix V4.0D

how to erase tape data?
I tried with mt erase but no success.
My tape is 120m.
So, how can i erase tape?


thanks in advance.
Last edited by pludi; 10-02-2010 at 01:19 PM..
# 2  
Old 10-06-2010
What do you get for:

Code:
mt status

If it can't find the tape drive, you need to know the address of the tape drive and do "mt -f /dev/rmtxxxxxxxxxxx command" .
# 3  
Old 10-06-2010
The Tru64 UNIX mt command does not have an erase option. Just use the dd command to erase the tape.
Code:
dd if=/dev/zero of=<tape_device_file>

# 4  
Old 10-06-2010
The "mt erase" was there in 4.0D and 4.0F .

mt(1)
# 5  
Old 10-07-2010
You are right. Mea culpa. I looked at the 5.1B docs where mt(1) does not have that option. DEC India, who were responsible for Shells, Commands and Utilities maintenance at that time, must have removed the option for some reason.

Tru64 UNIX 5.1B mt(1)
# 6  
Old 10-07-2010
The was a decided shift to unix System V at DEC Unix 5.1 (aka Tru64).
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