We recently made a small new feature for the Rescue CD. One of our customers had problems with a system file that was renamed by our virus scanner, but the detection was actually a false positive. Problem was of course promptly fixed in anti-virus databases, but since the system file was renamed, the machines in question failed to boot. To help this customer we implemented a new feature for Rescue CD that allows the user to run repair scripts from a USB stick when booting with the Rescue CD. Since this feature might be useful in some other situations too, we decided to make a new public release. Here are instructions on how to use the feature:
1. Copy the script (repair_script.sh) onto a USB stick, in a folder called fsecure/rescuecd (for example, in Windows this might be E:\fsecure\rescuecd\repair_script.sh). The script must be called repair_script.sh, and if the script is from F-Secure, it should have an accompanying gpg signature file (repair_script.sh.sig) which should also be copied to the same folder.
2. Insert the USB stick in the broken computer and boot the computer using Rescue CD 3.01.
3. When Rescue CD asks which partitions to scan, there is now a new option to run the repair script. Select that, and which partitions you want to run the script on, and continue.
4. If the script is not from F-Secure or the gpg signature is not correct, the script will still be shown, but Rescue CD will display a warning and ask if you still want to run the script.
5. After the script has ran, the results will be displayed and you have the option to continue with a file system scan or reboot the computer.
Please note that this version only supports running the repair script before the actual virus scan. So if you must run a repair script after a virus scan, you should first boot and scan the computer, and then insert the USB stick containing the repair script and reboot with Rescue CD.
The new version can be downloaded here.
checksums for f-secure-rescue-cd-release-3.01-14505.zip: