Grub read error

Hi  Frank,

Thank you for reaching out to Sophos Community.

If the device isn’t accessible anymore, kindly do the re-image.  It’s likely some of the core operating system files became corrupted.

And reimaging the device is the only alternative. If the issue still occurs after the re-image, I would recommend creating a case ID.

Thanks for the quick reply! I'll try to re-image the firewall and let u know if it did the job.

And yeah, If it re-imaging doens't work, a case id will be created and we will see from there.

Hi Frank,

Please do, and kindly share an update here. Thank you.

Dear Erick,

This morning i tried to re-image the XG 135 with the same version as the still working firewall at the customer. That one runs at build 18.5.2 MR-2-Build380. Sadly i can only find the two newer versions (19 & 19.5) on the Sophos license portal. Is there any way to still get an image of this exact version?

Otherwise I need to upgrade the working firewall what creates downtime at the customer. And yeah, that's the whole reason we put two firewalls in HA at our customers of course.

If there is no way to download this image, I think I'm going to create a case for it.

Thank in advance!

Dear Erick,

This morning i tried to re-image the XG 135 with the same version as the still working firewall at the customer. That one runs at build 18.5.2 MR-2-Build380. Sadly i can only find the two newer versions (19 & 19.5) on the Sophos license portal. Is there any way to still get an image of this exact version?

Otherwise I need to upgrade the working firewall what creates downtime at the customer. And yeah, that's the whole reason we put two firewalls in HA at our customers of course.

If there is no way to download this image, I think I'm going to create a case for it.

Thank in advance!

Hi Frank,

You can download the old version from here: 

SFOS Installers - https://download.sophos.com/network/SophosFirewall/installers/index.html
1.) For Hardware appliances - https://download.sophos.com/firmware/HW/index.html
2.) For Software appliances - https://download.sophos.com/firmware/SW/index.html
3.) For Virtual appliances - https://download.sophos.com/firmware/VM/index.html

 Download old version of firewall 

Dear Erick Jan

I tried re-imaging the firewall via USB but kept getting the same error message as shown below:

Also tried different tools as Rufus and BalenaEtcher for making the isofile bootable on the USB. Also tried the dd format option in Rufus. I think I kind of tried everything I can do to re-image the firewall but nothing seems to work. I think the hard drive had it's best time. If you got any other suggestions, please let me now. If not I think I make a case of it and see what the next steps will be.

And again, thanks for the quick replies!

Hi Frank,

I've found an old post with the same error. Kindly refer to the following  Install says "Cleaning NVRAMERROR: Unable to clean NVRAM" 

"Basically it is due to boot from USB stick as the SFOS is treating the USB disk as the main partition and unable to clean the NVRAM because the partition on that disk becomes readonly.

I could overcome this message by installing from a CD/DVD. I burned the ISO directly onto a disk and booted by machine from the disk drive, it worked like a charm!"

Dear Erick Jan

Sadly the unit doesn't have a diskdrive in it so the CD/DVD solution doesn't work for us.

I created a case id at the Sophos support page and wait til I got an reaction from them to see what to do with the firewall.

Probaly going to send it RMA.

Thanks again for the quick replies and the help!

Frank Boender