Other than not being fully automated, what would be wrong with:
- use dd to copy the first 10MiB of the old drive to the new,
- use dd to skip all but the last 10MiB of the old drive and seek to the
same spot on the new drive
- use dd if=/dev/zero to zero the first MiB of each partition.
That *should* guarantee that the partition structure is copied from the old
drive to the new and that no partition contains RAID IDs. You have to think
about what you're doing, but it should work and allow mdadm to equalize to the
new drive.
Also, unless I'm mistaken, neither hard drives nor hard drive controllers have
used CHS in many years, mostly because CHS has not been constant across the
platter(s) in about as many years. Far as I know, only partitioning tools
gripe about CHS alignment. It's why I stopped using fdisk, sfdisk and other
ancient partitioners. And I came close to scrapping parted because it can't do
simple arithmetic; but using 'unit s' works well enough, provided I do all the
begin/end computations outside of parted.
N
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