[arch-general] Bad md5sum or bad download for archlinux-2015.02.01-dual.iso

[David C. Rankin]

On 02/19/2015 04:32 PM, Marcel Kleinfeller wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> [marcel at oompf ~]$ md5sum archlinux-2015.02.01-dual.iso      3d6a54886230649a049a9d431e03bbba  archlinux-2015.02.01-dual.iso
>
> Everything should be fine with this mirror.

Marcel, All,

   I am now thoroughly confused regarding why I am not getting the correct 
checksum when I download to my laptop. Is there any reason one can think of 
(other than a failing drive -- i.e. disk geometry, etc...) that would cause the 
reporting of an incorrect checksum? The reason I ask is on my first download 
from www.gtlib.gatech.edu I received a checksum of:

31fa61afd67cbd88c91f97d7d04244a1

   I then downloaded the ISO from mirrors.gigenet.com to my server and received 
the correct checksum:

3d6a54886230649a049a9d431e03bbba  archlinux-2015.02.01-dual.iso

   To correct the copy on my laptop, I then deleted the original download and 
rsync'ed the good copy from my server (via wifi):

rsync -uav nirvana:~/arch/iso/archlinux-2015.02.01-dual.iso .

   Strangely, the checksum is still not correct:

723f6bab8b950ef59a689ff90a5ec82d  archlinux-2015.02.01-dual.iso

   I repeated the rm/rsync again and while the size reported is the exact 
correct number of bytes, the checksum is again wrong:

2832de308651f77df753b5a5977431c0  archlinux-2015.02.01-dual.iso

   Is there anything other than hardware that could account for this? The drive 
in the laptop is a WDC WD7500BPVX-22JC3T0 and smartctl tests all report "No 
Errors Logged", so I'm a bit stumped?

-- 
David C. Rankin, J.D.,P.E.