> On Monday 02 January 2006 15:48, HappyPhot wrote: >> Hi, >> I've suffered for many days and "google" almost every where. >> I would like to boot from the flash with jffs2 (i.e. using jffs2 as my >> root /) . But it alyaws shows: >> VFS: Cannot open root device..... (whole message is as below) >> >> Anybody knows what may cause this ? Please help and >> thank you. >>[...] > > You omitted the interesting part of the log output, the bootarguments at > the > very beginning. What is the value of root= ? > Maybe you made the typical mistake of specifying /dev/mtd3 instead > of /dev/mtdblock3, or you didn't compile in support for mtd access as a > block > device? >
Hi, David and all, I've tried root=/dev/mtdblock3, root=/dev/mtd3, root=31:03 etc. And "Caching block device access to MTD devices" was also selected when 'make menuconfig'. The results were the same. I use "phys_mapped_flash" and "mtdparts=phys_mapped_flash:2M(k4),2M(k6), 4M(rd),4M(jffs2),-(User_Data)". What is the "root=" I should use ? Also, I am wondering how the kernel knows "/dev/mtdblock3" is in my flash ? I think I never do any setting about this.... thank you , /HappyPhot
