On Friday 10 February 2006 16:58, Stefano Melchior wrote: > On Fri, Feb 10, 2006 at 10:52:28AM -0500, Jeff Dike wrote: > Hi Jeff, > > > On Fri, Feb 10, 2006 at 03:58:35AM -0700, Yu Yang wrote: > > > UML reports errors similar to below: > > > > > > [42949373.440000] VFS: Cannot open root device "ubd" or > > > unknown-block(0,0) [42949373.440000] Please append a correct "root=" > > > boot option > > > [42949373.440000] Kernel panic - not syncing: VFS: Unable to mount root > > > fs on unknown-block(0,0)
Jeff is seeing this unknown-block and this often suggests the problem he describes (Kbuild tend to reuse /boot/config-$(uname -r) even for cross-builds, which is wrong). > > Looks like you don't have the ubd driver configured. Run > > linux --showconfig | grep UBD > > > > If that doesn't show BLK_DEV_UBD configured, mrproper the tree, then run > > defconfig ARCH=um before building it. > > may it be that he did not specified correctly the identifier of the user > block dev? > I mean he should have run: > > # linux root=/dev/ubd0 In my expierence, rootfs=/dev/ubd0 is ok, root=/dev/ubd0 is not (UML passes root=98:0). Anyway, the default "root=98:0" is ok. > not > # linux root=/dev/ubd > It is only a hypothesis! > Cheers > SteX -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___________________________________ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
