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From: Sergey Vlasov <vsu@altlinux.ru>
To: community@lists.altlinux.org
Subject: Re: [Comm] 4.0 Server DVD, CD и неверные md5.
Date: Wed, 18 Jul 2007 12:40:53 +0400
Message-ID: <20070718084053.GA29749@newmaster.mivlgu.local> (raw)
In-Reply-To: <20070717194515.GA16416@cryo.net.ru>

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On Tue, Jul 17, 2007 at 11:45:15PM +0400, Pavlov Konstantin wrote:
> On Mon, Jul 16, 2007 at 12:41:55AM +0400, Dmitry V. Levin wrote:
> > On Sat, Jul 14, 2007 at 02:35:30PM +0400, Pavlov Konstantin wrote:
[...]
> > Об этом говорят со времён выпуска первого дистрибутива, списывают на
> > особенности тиражирования.
> > Однако мне всё-таки интересно, чем отличаются iso-образы.
> 
> 32bit CD:
> 
> thresh@snowflake /var/warez $ readcd dev=/dev/hdc f=S32.iso
> Read  speed:  4234 kB/s (CD  24x, DVD  3x).
> Write speed:  4234 kB/s (CD  24x, DVD  3x).
> Capacity: 309908 Blocks = 619816 kBytes = 605 MBytes = 634 prMB
> Sectorsize: 2048 Bytes
> Copy from SCSI (1,0,0) disk to file 'S32.iso'
> end:    309908
> addr:   309908 cnt: 20
> Time total: 349.668sec
> Read 619816.00 kB at 1772.6 kB/sec.
> thresh@snowflake /var/warez $ md5sum S32.iso
> c88d037618e8d087e4bc64262689cbd0  S32.iso
> 
> ... скопировал рядом S32.iso в Server-4.0.1-i586-install.iso, rsync на
> Server-4.0.1-i586-install.iso с rsync.alt...
> 
> thresh@snowflake /var/warez $ md5sum Server-4.0.1-i586-install.iso
> e11b90d5e43c14564497ed0314ebc70a  Server-4.0.1-i586-install.iso

$ (cat Server-4.0.1-i586-install.iso; dd if=/dev/zero bs=2k count=2 2>/dev/null) | md5sum -
c88d037618e8d087e4bc64262689cbd0  -

Т.е., в данном случае размер дорожки на CD больше размера исходного
образа на 2 сектора.  Можно просто обрезать их при чтении.

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  reply	other threads:[~2007-07-18  8:40 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-12  7:29 [Comm] План выпусков продуктов линейки ALT Linux 4.0 Максим Яновский
2007-07-12 11:47 ` Владимир Черный
2007-07-12 12:38   ` Евгений
2007-07-12 12:40     ` Алексей Шенцев
2007-07-12 12:49     ` Michael Shigorin
2007-07-12 13:17       ` Евгений
2007-07-12 21:56         ` Michael Shigorin
2007-07-13  4:26           ` Евгений
2007-07-13  3:56     ` Владимир Черный
2007-07-13  4:31       ` Евгений
2007-07-13  4:47         ` Владимир Черный
2007-07-13  4:51           ` Евгений
2007-07-13  7:11           ` Максим Яновский
2007-07-13  7:21             ` Alexey Sidorov
2007-07-13 15:21               ` Gleb Kulikov
2007-07-13 15:41                 ` Mikhail A. Pokidko
2007-07-13 15:57                 ` Алексей Сидоров
2007-07-13 17:15                   ` Motsyo Gennadi aka Drool
2007-07-13 17:59                 ` Pavlov Konstantin
2007-07-13 18:50                   ` Michael Shigorin
2007-07-14  5:25                     ` Bogaevskiy Jurij
2007-07-14 10:03                       ` Алексей Шенцев
2007-07-14 10:22                         ` Bogaevskiy Jurij
2007-07-14 10:35                           ` [Comm] 4.0 Server DVD, CD и неверные md5 Pavlov Konstantin
2007-07-14 12:51                             ` Bogaevskiy Jurij
2007-07-14 13:21                               ` [Comm] co-location Grigory Fateyev
2007-07-15 20:41                             ` [Comm] 4.0 Server DVD, CD и неверные md5 Dmitry V. Levin
2007-07-17 19:45                               ` Pavlov Konstantin
2007-07-18  8:40                                 ` Sergey Vlasov [this message]
2007-07-14 10:39                           ` [Comm] План выпусков продуктов линейки ALT Linux 4.0 Алексей Шенцев
2007-07-15 14:50                         ` Aleksander N.Gorohovski
2007-07-15 15:14                           ` Алексей Сидоров
2007-07-16  6:08                           ` Алексей Шенцев
2007-07-16 13:51                             ` Aleksander N.Gorohovski
2007-07-16 11:21                               ` Алексей Шенцев
2007-07-16  8:37                           ` Oleg Poteev
2007-07-16  9:11                             ` Teran
2007-07-16 10:29                               ` Евгений
2007-07-16 10:39                                 ` Teran
2007-07-16 11:16                                   ` Евгений
2007-07-14  7:37                   ` Gleb Kulikov
2007-07-14  7:51                     ` Евгений
2007-07-15  4:28                     ` Владимир Черный
2007-07-13  7:21             ` Евгений
2007-07-13 10:18             ` Michael Shigorin
2007-07-13 10:27             ` Владимир Черный
2007-07-13  7:32           ` Andrii Dobrovol`s`kii
2007-07-13  7:56             ` Alex Karpov
2007-07-13 10:14         ` [Comm] десктопы и архитектуры Michael Shigorin
2007-07-13 10:12       ` [Comm] План выпусков продуктов линейки ALT Linux 4.0 Michael Shigorin
2007-07-13  1:58   ` Максим Яновский
2007-07-13 17:17     ` Aleksander N.Gorohovski
2007-07-13 14:37       ` Алексей Сидоров

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