Since (almost) nobody uses CDs any more, the handy bootable system-fixer Linux distro has dropped the “CD” from its name <https://www.system-rescue.org/>. The latest version, 9.00, is reviewed here <https://www.theregister.com/2022/01/24/systemrescue/>. Not sure what the benefit of the new in-kernel NTFS driver is, since the existing FUSE support works fine, and benchmarks I have seen seem to indicate that one is not unambiguously faster than the other. Seems SystemRescue is very popular with Windows users: “Windows gets its underwear in a twist relatively easily, and it's not generous with tools to fix it.” The writer also says “We would have quite liked to see some tools to help with a dead Linux box, too, though.” But the main (software) issue I get with Linux installations not booting is some screwup in the bootloader, and you can use the Linux installation itself to fix that, by chrooting into it from your SystemRescue boot.