Knoppix and USB 2.0 external disk

[ksiyan]

I am trying to clone my laptop's hard disk by booting with Knoppix 5.0.
The laptop does not have USB 2.0 so I am using a PCMCIA USB 2.0 adaptor
and connecting the external disk (SimpleDrive) to it.

I can see the external disk recognized as a scsi emulated drive
/dev/sda1. I can read this disk but when I write to it using:

dd if=/dev/hda1 of=/dev/sda1 it hangs.

If I use fdisk or cfdisk to alter the partition on /dev/sda1 it hangs.

It appears that I can read from /dev/sda1 but not write to it.

Any ideas anyone on how I can get it to write to /dev/sda1 (USB 2.0
connected external disk).

Thanks,

Karan

 

[Harry331]

(e-mail address removed) wrote...

I am trying to clone my laptop's hard disk by booting with Knoppix 5.0.
The laptop does not have USB 2.0 so I am using a PCMCIA USB 2.0 adaptor
and connecting the external disk (SimpleDrive) to it.

I can see the external disk recognized as a scsi emulated drive
/dev/sda1. I can read this disk but when I write to it using:

dd if=/dev/hda1 of=/dev/sda1 it hangs.

If I use fdisk or cfdisk to alter the partition on /dev/sda1 it hangs.

It appears that I can read from /dev/sda1 but not write to it.

Any ideas anyone on how I can get it to write to /dev/sda1 (USB 2.0
connected external disk).

Maybe your external disk was mounted as ReadOnly.

Try changing the mount point to ReadWrite.

See http://www-128.ibm.com/developerworks/linux/library/l-knopx.html

 

[Folkert Rienstra]

(e-mail address removed) wrote...

Maybe your external disk was mounted as ReadOnly.

Aha, that obviously explains the hanging.