Bootcamp not appearing as bootable disk on High Sierra

I have a MacBook Pro (Retina, 13", Late 2013, 8GB/251GB) on which I have had a Bootcamp partition installed with Windows7 for several years (probably since early days, i.e. since 2014). Initially the MBP ran Mavericks OS, which I thereafter have continuously updated to current OS of High Sierra (10.13.6). Booting Windows has never been a problem. Until now. Now it does not show up when booting and pressing Alt/Option - only the *Macintosh HDD* is visible. Half a year ago I did the stupid mistake of running down free HDD space to something like 10 GB and as people might know this is not really appreciated by MacOS. However, I was able to get back to dry land after reading several forum posts. I am suspecting that this episode might have been the event that screwed up my Bootcamp somehow. Initially there **was** a corrupted MBR table as other posts have dealt with, e.g. these: https://discussions.apple.com/thread/252319323?login=true&sortBy=best https://discussions.apple.com/thread/252776981?sortBy=best&page=3 https://apple.stackexchange.com/questions/308824/how-to-convert-a-drive-from-the-gpt-format-to-the-hybrid-gpt-mbr-format-when-usi I followed the instructions there (using *fdisk*, not *gdisk*) and on the face of it, everything looks fine - at least in my eyes. MacOS is of a different opinion unfortunately, so I am at a loss of what to do now. I provide some basic screen shots below, which hopefully might provide clues. I do notice now that the gpt command shows "Suspicious MBR at sector 0" now - unsure if that actually was there earlier today. Looking at the MBR it looks like this The Bootcamp disk is available in all of the following situations: 1. Disk utility in MacOS 2. Finder (showing all individual files as well, and I can even copy files to Mac folders) 3. In recovery mode (command+R) as a choice of bootable disk (will not boot though) 4. Startup Disk (in System Preferences) So, the basic problem is that it seems to be **almost** correctly configured, but not fully, and the disk is just not showing up while booting (and pressing Alt/Option). ----------- **UPDATE 09.03.2024 10.41 CET** In order to exhaust all alternatives I did try with the Win7 boot drive again after having reset both SMC and NVRAM, but unresponsive keyboard and track pad remained. I thereafter pursued the Win10 avenue instead and downloaded a "fresh" x64 version (ISO) from Microsoft's homepage and started creating a bootable flash drive (size 32 GB), using Boot Camp Assistant (BCA), from that ISO. However, BCA throws me an error message during the process some 15-20 minutes in, see below. I looked into this issue, which of course others have encountered. I tried the eject recommendation, but there was not any mountings to eject in my case really, and the one that popped up in *Disk Utility* could not be ejected as it was in use for the BCA process. Terrible wall of problems this has turned into :) ----------- **UPDATE 25.05.2024 14.23 CET** I was able to copy all files I deemed necessary to salvage from the Bootcamp partition, so I took the decision to just erase/restore the partition and repurpose it as Mac space after that. Just as you pointed out, David Anderson, it turned into a too complex a maneuver, especially since I was able to salvage the files of interest (I hope). Nevertheless, I very much appreciate the assistance along the way, which gave me some new insights as well as dragged me to a decision point. Many thanks! ...and hopefully this post may be of usage to somebody else in the future.