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Old May 30, 2006, 01:12 PM
Orecron Orecron is offline
Join Date: May 2006
Posts: 1
Default Odd file type.

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im really unsure about this file backup for a dreamcast game...
the file names are as follows


all the way up to


it came with an SFV file and some other. i dont have the program to open it. ran an SFV check, all is good. wont open with winrar, zip and so on.

any clues?
Old May 31, 2006, 01:53 PM
carl1961 carl1961 is offline
Join Date: May 2006
Posts: 4
Default Sonic.Adventure.2.SelfBoot.7z.001

Use winrar to extract file Sonic.Adventure.2.SelfBoot.7z.001
it will combine all the others to one file. you can doubleclick the file and it should run winrar if not right click file and clickon OPEN WITH and point to

\Program Files\WinRAR\WinRAR.exe
Old Jun 28, 2006, 07:12 AM
shade0723 shade0723 is offline
Join Date: Jun 2006
Location: Romania,Galati
Posts: 1

what you have there is chain arhive which you can only open with a program called 7-zip and it's freeware.just install that program and click extract.inside that arhive you should find somthing like sonic.adventure.2.selfboot.cdi and it's the cd image from the game.(hope you haven't deleted it yet ) i almost did )
Old Nov 02, 2007, 11:22 AM
bluestreak711 bluestreak711 is offline
Join Date: Nov 2007
Posts: 9

please help i am in the same situation and when i extract the files and get the disc image it tells me that the disc structure is invalid
Old Nov 06, 2007, 08:56 PM
bluestreak711 bluestreak711 is offline
Join Date: Nov 2007
Posts: 9

Orecron i havent found an answer yet i am looking for myself and since this thread is dying i didnt get any responses so i posted it on my other forum and just keep in check here


and if you solve the problem you were having before i do please share
but i am gathering good information in my other thread

everybody on this forum can just reply here and let me know what you think
Old Nov 07, 2007, 01:15 AM
cobblers cobblers is offline
Junior Member
Join Date: Mar 2007
Posts: 17

bluestreak711, i assume from your other thread that you're using nero7 to burn with?...well i think you'll need to use an older version- nero5.5 to burn dc images, or try using alcohol to burn the image maybe?

personally, back in the good old days of dreamcast, i used to use cdrecord to burn dc games but it is a very involved process and the old memory isn't what it used to be... i used to post to this forum with the username of arthur_p_huxake, search for posts from that username and you should find some relevant info...goodluck fella, keep us posted and let us know how you get on.


Last edited by cobblers; Nov 07, 2007 at 05:44 AM.

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