From: Andrey Repin <anrdaemon@yandex.ru>
To: Hashim Aziz <hashaziz@hotmail.com>, cygwin@cygwin.com
Subject: Re: [cygwin] DD bug fails to wipe last 48 sectors of a disk
Date: Wed, 24 Jun 2020 13:21:26 +0300 [thread overview]
Message-ID: <1814912576.20200624132126@yandex.ru> (raw)
In-Reply-To: <DB7PR01MB519371C6CAE2D3CFFEF41DCAD5940@DB7PR01MB5193.eurprd01.prod.exchangelabs.com>
Greetings, Hashim Aziz!
Bottom posting in this channel, please.
> I've just tested with the command:
> dd if=/dev/zero of=/dev/sda iflag=fullblock bs=4M status=progress
oflag=direct
Although I'm unsure how Cygwin/Windows handles it. But without this flag, the
write is cached, and the problem may be outside dd, or even Cygwin.
> ...and can confirm that the last 48 sectors remain unwiped in this case also.
> Here is the output:
> 1000182120448 bytes (1.0 TB, 931 GiB) copied, 8284 s, 121 MB/s
> dd: error writing '/dev/sda': No space left on device
> 238468+0 records in
> 238467+0 records out
> 1000204861440 bytes (1.0 TB, 932 GiB) copied, 8284.89 s, 121 MB/s
--
With best regards,
Andrey Repin
Wednesday, June 24, 2020 13:19:42
Sorry for my terrible english...
next prev parent reply other threads:[~2020-06-24 10:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-19 18:19 Hashim Aziz
[not found] ` <1d1801d64677$bea56050$3bf020f0$@pdinc.us>
2020-06-20 17:31 ` [cygwin] " Hashim Aziz
2020-06-20 20:26 ` Eliot Moss
2020-06-23 15:28 ` Hashim Aziz
2020-06-23 15:29 ` Eliot Moss
2020-06-23 16:06 ` Nicholas Clark
2020-06-23 19:46 ` Hashim Aziz
2020-06-24 10:21 ` Andrey Repin [this message]
2020-06-25 12:08 ` Hashim Aziz
2020-06-25 13:25 ` Brian Inglis
2020-06-28 14:34 ` Christian Franke
2020-06-28 17:50 ` Jason Pyeron
2020-06-28 20:28 ` Brian Inglis
2020-06-23 19:33 ` Brian Inglis
2020-12-29 0:46 ` Hashim Aziz
2020-12-29 2:41 ` Jason Pyeron
2020-12-29 17:54 ` Brian Inglis
2020-12-30 1:35 ` Jason Pyeron
[not found] ` <DB7PR01MB5193B13815933B913D11DDC2D5D20@DB7PR01MB5193.eurprd01.prod.exchangelabs.com>
2021-01-04 21:08 ` Jason Pyeron
2020-08-04 22:42 ` Hashim Aziz
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