[SOLVED] Can't boot from usb harddrive

[daremra]

Hi there,

I'm trying to boot from an external ext4 harddrive.
To that end I copied (simply with cp) all files from the second partition of my SD card to the harddrive,
removed all "files" from /dev /run and /proc
and changed cmdline.txt on the first partition so it would mount root from /dev/sda1
And I made an entry in /etc/fstab to mount the disk (using its UUID) to /

It does find the harddrive but I then get a lot of errors from systemd:
$this->bbcode_second_pass_code('', '
[FAILED] Failed to start Load/Save Random Seed.
[FAILED] Failed to start udev Kernel Device Manager. (repeated several times)
')
...
It then tries to run these two jobs:
$this->bbcode_second_pass_code('', '
A start job is running for dev-mmcblk0p1.device
A start job is running for dev-ttyAMA0.device
')

And finally:
$this->bbcode_second_pass_code('', '
[DEPEND] Dependency failed for /boot.
[DEPEND] Dependency failed for Local File Systems.
')

And that's it.
Any idea what's wrong with udev?
Is one of the rules hardcoded to the second partition?

[daremra]

Oh well, stupid me.

I had used the harddrive before so it already had an entry in fstab which I only changed the mountpoint to /
BUT it still had the user and some other stupid non-root options...After changing that it works.

Sorry, for the post