Am 04.12.2017 um 00:09 schrieb A.W.C.:
Hi Baruch,
what I want ismanually mount the root file system from busybox rescue
shell. To make some changes, umount and exit from shell. Linux v
2.6.26.5, rootfstype=squashfs, root filesystem is on mtd4, NAND flash,
jffs2.
# mount -t proc none /proc
# mount -t sysfs none /sys
# mount -t devtmpfs devtmpfs /dev
mount: mounting devtmpfs on /dev failed: No such device
Seems devtmpfs is not supported by your kernel. Use mknod to create the
most basic device nodes (/dev/null, /dev/zero, /dev/mtdblock{,1,2,3,4}
and a few ttys). But: This is absolutely not busybox related. This is
linux basics.
# mount -t jffs2 /dev/mtd4 /mnt/root
mount: mounting /dev/mtd4 on /mnt/root failed: No such file or directory
After creating the device node with the proper minor major mount will work.
Yours,
Mattias
On Sunday, December 3, 2017 9:23 AM, Baruch Siach <[email protected]>
wrote:
Hi Alex,
On Fri, Dec 01, 2017 at 03:17:39PM +0000, A.W.C. wrote:
> But I already have directories /dev, /proc, /sys, /tmp
> If I'll make these new dir for TinyCross they will replace existing
ones?
>
> mkdir -p /proc
> mkdir -p /sys
> mkdir -p /tmp
> mkdir -p /var/log
>
> Basically, I want mount root partition, its located on /dev/mtd4. In my
> specific case I need manually mount a few partitions only required
for this
> task, correct?
> Then mount root
>
> mount /dev/mtd4 /mnt/root
You must specify the type of the filesystem when mounting raw MTD
filesystems.
This is probably jffs2 in your case, though it might also be ubifs. In
case of
ubifs you also need to "attach" the ubi volume before you mount it.
> Please correct me if I'm wrong.
>
> How to exit from busybox shell properly? Command 'exit' produces
Kernel panic.
This is expected behaviour. The kernel panics when PID 1, your shell,
exits.
The common implementation is to exec the rootfs init from the
initramfs init
script.
baruch
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