moving a partion to a new sector [solved]

[njcwotx]

I have a bootable flash drive I am using on a raspberry pi, parted says the 2nd partition is not aligned.

I want to 'shift' the partion over some to align it. I know what sector to set for aligning. and have created the partition and parted says its aligned.

I am having trouble restoring the partition. I tried for example:

dd if=/dev/sde2 of=sde2.img

using parted I created a partition of the same size and restored with 'dd of=sde2.img if=/dev/sde2'

I can mount the partition afterwards and the file system appears ok, but when I boot. it complains of corruption. fsck finds all sorts of errors.

I was going to try to rsync the filesystem over directly to a new flash, but not sure if that completely works yet either.

Anyone every 'move' a partition?
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[njcwotx]

attempting a move with gparted....

2 tries, first move wasnt aligned using with cylinder, but parted still didnt agree.

Tried again with align by Mib and parted agreed with alignment.

Boot up=corruption.

Will try again tonight, this time ill gpart to Mib and expand slightly to give it a try.
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[Buffoon]

Parted is probably lying and there is nothing wrong with your partition.

[njcwotx]

Its a flash drive with a small block size. The original image works fine and I can rebuild it over and over. Nevertheless, I am working to see how it could be moved and survive. Its not an exercise to 'fix', but more of one of curiosity at this point.
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[frostschutz]

[njcwotx]

it was just typo in the post.
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[njcwotx]

I tried from the beginning. Started with a fresh clean image of the bootable flash. Tested its bootup and it worked.

Then I used gparted to shift it and align on MiB. Even expanded it to use rest of drive. Once complete I expanded the first partition to fill up the gap. Parted liked alignment, and the bootable flash worked!

so, gparted can do it. Came across a post cylinder alignment was old school and MiB Alignment was more modern. So thats why I tried it.


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dd if=/dev/sdb2 of=sdb2.img seemed to work, I could reverse with dd if=sdb2.img of=/dev/sdb2 and mount it, but the bootable flash had issues and fsck thought it was weird. maybe dd not work as good on partions vs entire disk?
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