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SMR drives and ZEROs sectors and missing head display

Posted: 09.06.22, 11:18
by positivebit
just wondering for which reason, in DE task, cloning a charger SMR drive, sometimes disapear the [ HEAD-0 (1,2,3) etc] text after LBA text.
also, another thing, is that the sectors without HEAD number have all ZEROs inside.

please check pictures...

Sector zeros and missing heads.png
Sector zeros and missing heads.png (28.04 KiB) Viewed 8085 times

Re: SMR drives and ZEROs sectors and missing head display

Posted: 09.06.22, 11:26
by northwind
That's because when you create head map, the drive creates it based on the occupied sectors. That means that empty sectors are not mapped, simply because they are zeroed.

Re: SMR drives and ZEROs sectors and missing head display

Posted: 09.06.22, 16:17
by d_d_recovery
+1 for Northwind
Here is a little video about it.
https://youtu.be/qMJR5g7l5nI

Re: SMR drives and ZEROs sectors and missing head display

Posted: 09.09.22, 03:09
by osity
Cool find. Thanks for the video explanation D_D Recovery.