Rob van der Heij wrote:
I expect the problem is using 'dd' for the copying may not get the magic signatures that makes the disk a CDL format, so the driver ends up seeing it as LDL and gets things misaligned. But you should be able to notice that when the new system is booting.
This is not the case. Using dd on the entire disk does copy all data in the "magic" first tracks, and blockdev --rereadpt /dev/target/disk will cause the kernel to reread it on the fly. Just make sure the target is really the same disk layout as the source upfront, because otherwise you'll end up in deep <censored> because the dasd driver's media detection will see a different disk layout than the partition detection code.
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