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| jane55 2002-05-28, 9:46 pm |
| How do I chage a router IOS to read/write? | |
| Yankee 2002-05-29, 4:10 am |
| you upgrade your 2500 series to a 2600 series router 
But you are asking for a reason and I suspect you may be trying to upgrade your IOS...What is the real question?
Yankee | |
| jane55 2002-05-29, 6:21 am |
| I upgrade a 2500 router IOS with a later version of 2500 series IOS. The new IOS works great, but it says "Read Only".
Since the IOS is read only I cannot back it up to a TFTP or upgrade in the future.
I need to know how to change an IOS from read only to read write. | |
| wirechild 2002-05-29, 3:21 pm |
| The IOS is not read only it's the flash that is read only and is suppose to be that way in 2500 series and a few others. This is not preventing you from copying your IOS or config to a tftp server. if you are not able to, then I would start looking else for the problem. | |
| jane55 2002-05-29, 7:56 pm |
| No, it is not suppose to be that way. I used "no boot flash partition:1:???" to remove it. Everthing else I tried didn't work. | |
| Yankee 2002-05-30, 5:43 am |
| yes it is suppose to be that way now and you have to learn how to perform an upgrade on the 2500 IOS. It involves changing config-reg to 0x2101 then configuring the ethernet address and the ip default-gateway statement. you may then tftp a new IOS version.
Yankee | |
| jane55 2002-05-30, 6:21 am |
| Yankee,
I remember reading that in CCNA book. | |
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| do a search at http://www.cisco.com/univercd/home/home.htm
for
*2500 copy tftp*
4th link down.
once you get there, look around the links on that page, maybe helpful to u in the future.
or go to the 1st link on the search result and go all the way down to the bottom of the page. | |
| MadChef 2002-05-30, 9:05 am |
| quote:
Originally posted by jane55
No, it is not suppose to be that way. I used "no boot flash partition:1:???" to remove it. Everthing else I tried didn't work.
Yankee is right (again). From http://www.cisco.com/warp/public/63...50.shtml#memory
The 2500 routers run the Cisco IOS software from Flash. These image files are defined as relocatable since the Cisco IOS software image can be executed from varying locations in the Flash.
A relocatable image file is recognized by the letter "l" contained in the file name (for instance: c2500-js-l.121-9). As a consequence, the Flash memory is set as read only when the main Cisco IOS software is running. Copying a new Cisco IOS software image then requires the router to be in RxBoot. Newer releases of Cisco IOS software make this step automatic and transparent in the background.
MadChef |
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