I have a fujitsu siemens amilo li2727 and have bought a 320gb sata hard drive for it but when i use the backup/recovery discs to install the drive I get 837 (null). I thought it would be straight forward to change the drive and then restore everything to the new drive. Any ideas

That laptop runs SATA I not SATA II.

My first educated guess would be you bought a SATA II drive.

Check the rear of the drive if there is a jumper to revert to SATA I.

This is the drive i have bought
320 GB Fujitsu MHZ2320BH Notebook, 2.5", SATA 3Gb/s, 5400rpm, 8MB Cache, 12 ms
I have also heard that there is a problem with the recovery/restore discs. I have used the discs on the original drive with no problem but when using them with the new drive i get the script error 873 (null) message

Again that is a SATA II (3Gb/s) drive on a SATA I (1.5Gb/s) motherboard.

Do you see any jumpers on the rear to convert it?

Does your BIOS detect it?

no there are no jumpers and yes the bios does detect it

Did you see this thread:

Fujitsu Technology Solutions - Forum • View topic - [Li2727] Recovery Discs

Just as a test you might try running Ubuntu Live CD:

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