Date: Mon, 8 Nov 2004 06:03:15 -0800 From: cape canaveral <somniosus@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: What is the best way to obtain an exact copy download?-->wrong md5 after downloading 5.3dsc1,2=( Message-ID: <f2f44cff0411080603736a059e@mail.gmail.com> In-Reply-To: <f2f44cff04110806014bfc9081@mail.gmail.com> References: <20041108084129.28575.qmail@web51610.mail.yahoo.com> <20041108100213.GC868@orion.daedalusnetworks.priv> <f2f44cff04110806014bfc9081@mail.gmail.com>
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On Mon, 8 Nov 2004 12:02:13 +0200, Giorgos Keramidas <keramida@ceid.upatras.gr> wrote: > On 2004-11-08 00:41, Mark Jayson Alvarez <jay2xra@yahoo.com> wrote: > > Good day! > > After downloading disc1 and disc2 of freebsd 5.3, my boss told me to > > verify the download using md5. > > Good thinking. > > > And to my surprise, none of those two iso's have the same md5 as that > > of the md5 written in CHECKSUM.md5. > > Some times, if you start downloading an ISO image while it is still being > uploaded to the ftp-master server or while a mirror still fetches the same ISO > image from ftp-master, what you get is an incomplete download. Try comparing > the sizes of the files on the remote server after a while. If it has changed, > the ISO iamge is still being uploaded to the FTP server; wait a bit and retry. > > > > > Question: > > On the middle of my download, how will I know if I'm still downloading > > the correct file, that no packet is being dropped and that I will end up in > > a perfect mirror file download? Do you know any downloading tool that will > > do just like this? Earlier, I just used the konqueror when I downloaded > > those ISO's. Is it really that hard to download? We're using E1 modems and > > our internet connection is quite fast. I'm just thinking, we are still lucky > > because of this. But how about those people with low bandwidth internet > > connection? Do they have a choice? > > All this should be handled gracefully by the TCP network. AFAIK, there is no > easy way to verify half of a file while it's still being downloaded over FTP. > > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > One optoin is to use the Bittorrent download - it will do hash checks of each piece and re-download any which fail. Another option (if you do not want to re-download both CDs) is to have someone with known good copies help you recover the existing files. Two utilities which can do this are zidrav and quickpar. I doubt very much that more than 1MB of parity data would be required to repair these cd images; they are probably off by only a few bytes. -Aaron
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