9.10 beta wubi.exe wants another iso than the one it is extracted from

[marcan]

intro:
i'm using Ubuntu 9.10 "Karmic Koala" - Beta amd64 ubuntu-9.10-beta-desktop-amd64.iso
using windows 7 RC (7100) 64bit (w/ french language addon) as host system (ntfs 64k clusters on single sata 200gb drive mbr)
using wubi.exe (wubi 9.10 rev153) extracted from ubuntu-9.10-beta-desktop-amd64.iso and using the same iso in the same folder as wubi.exe.

what i expect to happen:
so this should have wubi use that .iso file to do the install or so it is supposed .

what happens instead:
well it doesn't .. rather it find karmic-desktop-amd64.iso.torrent and starts to download it..

what i tried :
1- renaming ubuntu-9.10-beta-desktop-amd64.iso to karmic-desktop-amd64.iso
result:fail
wubi didn't like this and just started downloading karmic-desktop-amd64.iso from torrent

2- after failing with renaming.. i looked for cli flags to use with wubi.exe.. and i just found a way then..
for this possible workaround. assuming my ubuntu-9.10-beta-desktop-amd64.iso isn't corrupted (mine isn't .. i checked)
i just run "wubi.exe --skipmd5check" and it worked !

temporary workaround:
run "wubi.exe --skipmd5check" assuming your iso isn't corrupted..

[Agostino Russo (ago)]

Yes this is correct, the code at the moment checks for the Final Release or falls back to the latest daily ISO.

[Agostino Russo (ago)]

It is annoying but setting importance to low since there isn't much we can do at the moment, some mechanism to automatically accommodate for beta/rc releases will have to be introduced in the next cycle.

[marcan (benoit-marc-andre-4)]

i don't know if it's related,but the workaround it thought was working..
worked for creating the bootmanager entry and for the initial setup.
but when setup is trying to access the .iso file,it fails and gives me a disk i/o error and aborts the installation..
..
maybe the installation does a md5check aswell and when failing that it gives an error and aborts..

[Sohaib Afifi (sohaibafifi)]

Try the --isopath option and indicate the iso file you want to install

[Redundant Username (cartoons99)]

Thanks. I just extracted wubi.exe from the .iso and used that installer to keep it from reverting.