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changing the flash in a 2501

Posted on 2004-03-26
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Last Modified: 2010-04-17
This may be a simple question but how do I change the flash in a 2501 from read only to read /write?
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Question by:S3T
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Greenclock earned 500 total points
ID: 10692166
S3T

The Flash memory will be in Read/Write mode when you boot into boot mode.  This will allow you to load a new image into the flash.

See below.  I suggest you check out the 2 URL's for more details on how to load a new image.  It can be tricky the first time.  

This can be done as follows:
   Router> enable
   Password: password
   Router#
   Router# conf t
   Enter configuration commands, one per line. End with CNTL/Z.
   Router(config)# config-register 0x2101
   Router(config)# ^Z
   Router#
   Router# wr mem

   Router# reload

   Router(boot)>

Take a look at the following - http://www.sdnp.undp.org/rc/areas/tech/setup/cisco-upgrade.html

Cisco 25xx http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/prod_release_note09186a00800810f3.htm

GC
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Expert Comment

by:Greenclock
ID: 10692181
Corrected Link  - Sorry missed the "l" of the end of the link

http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/prod_release_note09186a00800810f3.html

GC
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Author Comment

by:S3T
ID: 10692318
Greenclock,

Thank you for your answer but maybe I should have worded my question differently. I have reloaded IOS images many times to different routers with the [copy tftp command]. I am looking for the command /s to change the flash from read to read/write when viewed with [sh ver]. I have seen it with the config. reg set to 0x2102. Thanks
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Author Comment

by:S3T
ID: 10692372
Greenclock,

Sorry I see what you were saying and I was looking at something total dif. Your answer worked. Thanks
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LVL 6

Expert Comment

by:Greenclock
ID: 10692397
No probs...

The very thing you were asking had me baffled for a while when I got hold of my first 25xx.  Just glad I could be of help.

Thanks for the points..

GC
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