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cisco 3620 copy flash command

Last Modified: 2012-05-09
I want to boot my 3620 from a new 20 MB PMCIA flash card. I already have the router configured in TFTP console session using hyperterminal cli emulation.
show wersion=Router#show version
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3620-IS-M), Version 12.1(3a)T7,  RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/cgi-bin/ibld/view.pl?i=support
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Sat 10-Mar-01 19:45 by ccai
Image text-base: 0x60008950, data-base: 0x6102E000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (f
ROM: 3600 Software (C3620-IS-M), Version 12.1(3a)T7,  RELEASE SOFTWARE (fc1)

Router uptime is 1 hour, 11 minutes
System returned to ROM by power-on
System image file is "flash:c3620-is-mz.121-3a.T7"

cisco 3620 (R4700) processor (revision 0x81) with 49152K/16384K bytes of memory.

Processor board ID 29853621
R4700 CPU at 80Mhz, Implementation 33, Rev 1.0
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
2 Ethernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
DRAM configuration is 32 bits wide with parity disabled.
29K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
20480K bytes of processor board PCMCIA Slot0 flash (Read/Write)

Configuration register is 0x2102
Show file system=Router#show file system
File Systems:

     Size(b)     Free(b)      Type  Flags  Prefixes
       30712       30136     nvram     rw   nvram:
           -           -    opaque     rw   null:
           -           -    opaque     rw   system:
           -           -   network     rw   tftp:
*   16777216     6839256     flash     rw   flash:
    20971520    20971520     flash     rw   slot0:
           -           -     flash     ro   slot1:
           -           -    opaque     wo   lex:
           -           -    opaque     ro   xmodem:
           -           -    opaque     ro   ymodem:
           -           -   network     rw   rcp:
           -           -   network     rw   pram:
           -           -   network     rw   ftp:

I tried this command:Router#copy flash:c3620-is-mz.121-3a.T7 slot0
and got:
Router#copy flash:c3620-is-mz.121-3a.T7 slot0
Destination filename [slot0]? c3620-is-mz.121-3a.t7
%Warning:There is a file already existing with this name
Do you want to over write? [confirm]n

I phrased the command this way becasue it looks like in show version the Sim based flashed is just called flash and my 20 mb PMCIA card is slot0
The routers's response seems to indicate that it think that slot0 is onboard flash.
Where am I going wrong here?
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