I'm working with new 4TB drives, and one of them just had a bad spot
in a fairly awkward place.
The very first block of an ext4 partition was unreadable, and caused
problems in booting, as well as anything else that wanted to scan
partitions.
I overwrote the first 4K with zeroes, deleted the partition (with
gdisk) and created a new unformatted partition to cover the area. Now
that partition passes a read test, and I'm checking the other partitions.
The damaged partition has been inactive for a while, so I'm quite sure
I have adequate backups. But now seems to be a time for me to learn
-- lots of things have been going wrong, and I've been learning how to
cope.
So I wonder if there's a way to get that partition back, at least in
part, without using my backups.
Any hints, pointers, tutorials, or opinions welcome.
--
Kevin O'Gorman
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