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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 08-30-2006, 08:11 AM   #1
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Registered: Jul 2006
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Failed to mount root filesystem during boot

I'm maybe in the wrong forum, sorry for that.
I'm trying to build a really small linux, an embedded linux. I'm using an usb-stick to boot from.
The bootsequence goes well until init tries to mount /dev/sda1 on /. Then it tells me that there's no such device.

from the boot-sequence:
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly
mount: Mounting /dev/sda1 on / failed: No such device.

But there's is a device file in /dev for sda and sda1

My fstab:
/dev/sda1 / ext3 defaults 1 1
Old 08-30-2006, 10:20 AM   #2
Registered: Dec 2005
Distribution: Slackware
Posts: 250

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If your system is on an usb-device, I think, you'll need to load some usb modules in an initrd before booting.

I found that:
mkinitrd --with-usb --preload=ehci-hcd --preload=usb-storage --preload=scsi_mod --preload=sd_mod ./usbinitrd-`uname -r` `uname -r`
Remeber to edit your lilo.conf or grub.conf to use the newly created initrd.
Old 08-31-2006, 05:17 AM   #3
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No I don't think so, since kernel 2.6.11 or something you can make it wait for finding your usbhardware with the rootdelay=# (# seconds). I rebuild my devices files and it fixed my problem. Thanks anyway!
Old 08-31-2006, 10:35 AM   #4
Registered: Dec 2005
Distribution: Slackware
Posts: 250

Rep: Reputation: 34
Hey, that sounds great, I guess it is a lot ieasier then what I postet before.

Now I know, what I'm gonna try tonight


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