Whats-a-MegaByte & Switching to LBA Safety

[Ray & Sandie Clark]

Two questions:

[1]     When Parted talks about 1 MB does it refer to 10**6 or 2**20?

[2]     The documentation talks as though one can switch from CHS to LBA at any
time and there will be no ill effect on the rest of the system.  Perhaps I
don't understand clearly enough, but I would be afraid that this either
would or could result in some OS mapping differently and messing up the
whole disk.

Can someone make an explicit statement in this regard?

The documentation also seems to indicate that if there is a problem that you
can always flip it back.  This is fine if nothing messed up the disk...I
guess.  Is this a sure bet?

I guess what I am getting at is that I get the "warning, windows is using
CHS" (I partitioned with partition magic), and I want to switch to the more
trouble free, but I don't want to trash my system.

I would appreciate any clarifications to help me understand.

Thank you ahead of time.

--Ray Clark