编译内核出错。

荣誉斑竹

VFS: Cannot open root device "sda3" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

我用的是VMWARE.　装的是gentoo.

lingfen1552

偶多次遇到这种情况，是kernel加载设置不对！你将grub.conf中的内容贴出来！

荣誉斑竹

多谢，我是按照www.gentoo.org上的手册来装的．

cp arch/i386/boot/bzImage /boot/kernel

您看看我的grub.conf　没问题吧？

default 0
timeout 10

title=Gentoo
root (hd0,0)
kernel /boot/kernel root=/dev/sda3

再贴一下我的fdisk -l的显示．

livecd linux # fdisk -l

Disk /dev/sda: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 10 80293+ 83 Linux
/dev/sda2 11 43 265072+ 82 Linux swap / Solaris
/dev/sda3 44 522 3847567+ 83 Linux

荣誉斑竹

void __init mount_block_root(char *name, int flags)
{
    char *fs_names = __getname();
    char *p;
    char b[BDEVNAME_SIZE];

    get_fs_names(fs_names);
retry:
    for (p = fs_names; *p; p += strlen(p)+1) {
        int err = do_mount_root(name, p, flags, root_mount_data);
        switch (err) {
            case 0:
                goto out;
            case -EACCES:
                flags |= MS_RDONLY;
                goto retry;
            case -EINVAL:
                continue;
        }
            /*
         * Allow the user to distinguish between failed sys_open
         * and bad superblock on root device.
         */
        __bdevname(ROOT_DEV, b);
        printk("VFS: Cannot open root device \"%s\" or %s\n",
                root_device_name, b);
        printk("Please append a correct \"root=\" boot option\n");

        panic("VFS: Unable to mount root fs on %s", b);
    }
    panic("VFS: Unable to mount root fs on %s", __bdevname(ROOT_DEV, b));
out:
    putname(fs_names);
}


内核代码的这里. do_mount_root 出错了.怎么回事?