Matthew Garrett wrote:
On Tue, Jul 12, 2005 at 11:49:35PM +0900, Tejun Heo wrote:
This has come up several times now. One thing I'm curious about is
why we are disabling HPA on boot without consent from the user. AFAIK,
HPA is mostly used to implement hidden recovery/suspend storage areas
and disabling automatically on boot increases the likeliness of
destroying them. What do we gain by disabling HPA on boot? Are there
some dumb machines which unnecessarily sets HPA and reduces the capacity
of drives excessively? Even in such cases, wouldn't it be better to do
idedisk_check_hpa() only when kernel parameter explicitly says so?
I'm not sure why we're doing it, but reverting this behaviour is likely
to make some systems unbootable (install with kernel which disables HPA,
format entire drive, put filesystem on it).
Yeah... it will immediately make disks unusable. sad, sad.
--
tejun
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