Hi Jon,

actually I do not expect "drivers" like OnTrack, Ez Drive etc.
to mess with host protected areas. They just redirect attempts
to access the disk by BIOS to their own code, which modifies
the BIOS call parameters. Which is why OS which access disks
without using the BIOS have to be configured to do suitable
transformations themselves (e.g. Linux offset boot parameter)
or use suitable drivers made for the specific OS in question.

But you make a very important point about the transparency
of the process. In the days when DOS was normal, you could
probably get everything converted during the driver install
process get away with it. But as soon as you have a system
with 2-99 operating systems on disk, it is A LOT easier to
first install the "driver" BEFORE you install any of your
operating systems at all. Because otherwise, even if you
take partition images and everything, you WILL end up with
having to do elaborate tuning to get things to boot again.

Boot managers tend to be RATHER sensitive about where and
on which disk geometry the system that you want to boot is.
So if you install a "driver" which changes that or even
shifts everything to another offset on the disk, you will
have to have some serious explaining to do until the boot
process cooperates with you again.

Then it's a lot easier to start with the "driver" and then
install the OS of your choice later. You may still backup
your files as files or in tarballs, not as disk/partition
images, to add them to the freshly reinstalled OS later.

Regards, Eric



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