"Arno Wagner" wrote in message
Previously wrote:
I am still not clear on how the hdd cam work with the 2 different
configurations. They give different numbers of total sectors...
The configuration is not in the HDD.
Yes it is, clueless Babblebot.
It is a "fiction" the BIOS makes up from what the HDD tells it.
See, it is.
The readon is that HDDs can have much more cylinders/heads.sectors
Cylinders, babblebot, cylinders.
than old BIOSes could handle.
The rea's'on is that HDs use different limits for C, H and S than bioses
do, P(CHS) and L(CHS). That's why they are called a translating bios.
Drives still have an unchanged 16-heads limit whereas the new bios was enhanced by setting the heads limit at 256.
Drives have an enhanced cylinder limit (65536) whereas the new bios
still has the old 1024 cylinder limit of the legacy bios.
The total limit for both of them is the same CxHxSx512 = ~8GB
Ubnfortunately, before LBA there was
no standard way
Yes there was, problem was there were two standard ways:
LBA(assist) and Large (or bitshift).
A good bios should be able to tell from the MBR CHS
-by checking against the rules for each- which one was used.
to do this translation.
Maybe because there is no translation in using LBA? Moron babblebot.
But even an Int13 extended (LBA) BIOS can use CHS for addressing a
drive and use a CHS of it's choice.
Arno