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As those aren’t available separately (just in forms that won’t boot on UEFI systems), I needed to download the MFS Tools ISO, mount it, extract the squashfs image from inside it, mount that squashfs image (requires a Linux OS, which I just happen to have), and then copy the files from /usr/local/bin folder in the mounted location to another USB key (as you won’t be able to write them to the Etcher-created USB key):Īs that’s a non-trivial exercise (probably wouldn’t have been able to do it myself six months ago), I’ve attached a zip file with those tools (MFS Tools 3.32-devel) at the bottom of this post. Next, you need the MFS Tools mentioned in the forum post. But now what? Shut down the PC, attach the SATA drives, old and new, and boot from the USB key again. (You can clean that off later if you want.) This uses the shim/grub/MOK process that you can read more about here. This effectively whitelists the openSUSE signing certificate so that it is trusted to boot on your PC.
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If you have Secure Boot turned on (which you probably do, as Windows PCs ship with that on by default), it will boot, but only after you allow the openSUSE boot loader and kernel: Insert that USB key into your PC, and try to boot it. (I chose GNOME LiveCD.) Once you’ve downloaded that ISO, you can “burn” it to a USB key (which will destroy anything on that USB key) using a program like Balena Etcher. Click on the “Live” tab and choose one of the “Intel or AMD 64-bit desktops” versions.
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I downloaded the latest openSUSE 圆4 LEAP ISO from. The forum post mentioned that they used openSUSE 圆4 LEAP for their Linux image, so I figured that was a good place to start. Short of going out and buying the cheapest possible (disposable) PC, it seemed like there should be a way to get this to work. Sadly, the downloads available on the forum post do not work with UEFI (even if they say they might - they don’t). That means I need a USB key that can boot via UEFI (no CSM available). Now, all the PCs I have access to (with at least two accessible SATA ports) are UEFI-based.
This time, the process wasn’t quite that simple because I no longer had access to an old PC. Many hours later (we’re talking about terabytes of data here), the process was done. The previous time I did this, I took my old and new drives into the office (remember when people worked in those?), connected them to an old surplus PC, booted it into Linux, and copied the content. (Yes, that post is from almost six years ago, but the process hasn’t changed much.) The basic process can be found on page 7 of this post in the Tivo Community forums.
Run an “mfscopy” command to copy all the content from the old drive to the new drive, skipping anything that runs into a bad block. Connect both drives (via SATA) to a desktop computer (USB works too, if you happen to have multiple SATA-to-USB adapters that work with 3.5″ drives). The process for replacing the drive isn’t that bad: Get a new drive, same size or bigger. If you care to read more about that mess, see blogs like this one.) (That short lifespan is tied to Western Digital and CMR vs. Sadly, it’s only one year after the previous drive replacement.
I’ve been using Tivo DVRs for many years, and this is the fourth drive replacement that I’ve done. It’s a little off topic, but it ties in some of the Secure Boot topics that I had discussed previously, and might be useful to anyone trying such a maneuver in the future.