Re: Upgrade & Kernel Problems
On Wed, Sep 23, 1998 at 05:43:59PM +0100, Philip Hands wrote:
> Tecras and other notebooks, and some PCs have a problem where they fail to
> flush the cache when switching on the a20 gate (IIRC), which is provoked by
> bzipped kernels, but not by zimage kernels.
>
> So when the bzip loader does its magic to unzip the kernel, the cache
> ends up full of drivel, which it then proceeds to try and run.
bzImage files are actually "big zImage" not "bzipped Image". bzImage
kernels can be as large as you like, but because they need to decompress
into extended memory, they aggravate this problem. zImage kernels just
compress into conventional memory, so they never need to touch the a20 gate,
but they hit the 640k limit.
Have fun,
Avery
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