On 6/20/2020 1:31 PM, Hashim Aziz via Cygwin wrote:
To reproduce simply run the following command on a drive (obviously, this will
irreversibly wipe all data):
dd if=/dev/zero of=/dev/sdX bs=4M status=progress
Both drives were attached via internal SATA (by way of a PCIE to SATA Host Bus
Adapter).
Cygwin was running in an elevated window as dd cannot run in Cygwin without
administrator access, at least not on Windows 10 and not when dealing with raw
disks. I was running Avast the first time I discovered this, and am currently
running Windows Defender, so doubt that the AV is the cause of this.
The hard drives are a Western Digital WD10PURX-64E5EY0 (Serial:
WD-WCC4J6HX189U) and a Kingston SV200S3128G (Serial: 12BA315PKAWK).
I just ran DD for Windows 0.6beta3 with variations of the following command:
dd.exe if=/dev/zero of=\\.\PHYSICALDRIVEX --progress bs=4M
...and can confirm that the bug also manifests here, but in a slightly
different way - irrespective of the disk or block size, it fails to wipe the
last 176 sectors of the drive.
I was going to ask: even with block size 512 bytes? But I guess you checked
that ...
Regards - Eliot
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