This is not actually a bug.
Starting with 12.2(1) IOS, the 2600 and 3600 platforms support the
squeeze command. To get it to work, you have to reformat the flash
using a 12.2 image, which creates a log file used in the squeeze
process. That log is a few hundred K in size, and hidden.
The listed flash requirements for 12.2(8)Tx images is 16MB, and this is
part of the reason why ... even though technically it can fit in an 8MB
flash. It's also listed that way because future versions are not going
to fit in 8MB, even formatted with old flash.
Thanks,
Shawn
Sasa Milic wrote:
>
> Speaking about upgrade bugs, I've found upgrade bug in 12.2.
> Here is what is happening, and how to overcome it.
>
> Hardware:
> ---------
>
> 2600 with 8 MB flash, 12.2(8)T1 telco IOS loaded.
>
> Problem:
> --------
>
> There is 8MB flash, and I want to load 12.2(8)T2. "show flash"
> shows that flash is 8MB. Do "erase flash" to remove existing
> image from flash. Now "show flash" shows that there is 7.8MB
> free in flash, and 12.2(8)T2 cannot be loaded ("copy tftp flash"
> says that there is no enough space). "squeeze" doesn't help.
>
> Solution:
> ---------
>
> Load older IOS that fits into 7.8 MB, for example 12.0(7)T,
> reload router, erase flash (now it will have 8 MB free), and
> then load 12.2(8)T2.
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