Linux on old or low power pcs

ISSUE: has the grub menu disappeared? does your system boot straight into windows? Explanation Each disk has its own OS, and efI bootloader 1) Linux bootlader (xubuntu) is sda1 2) Windows 10 bootloader is sdb2 Now, the grub2 files that matter are: /etc/default/grub in which you need to make sure  GRUB_TIMEOUT_STYLE=menu and doesn't say  GRUB_TIMEOUT_STYLE=hidden This makes sure you see the grub menu and /etc/grub.d/40_custom (see  https://linuxvox.com/blog/grub-config-file-ubuntu /) where we add our extra menu option for Windows 10 (see https://askubuntu.com/questions/661947/add-windows-10-to-grub-os-list ) viz: type  lsblk  to identify your windows EFI partition, then blkid /dev/sda1   (with the partition /dev name) to find the UUID of the EFI (call that  YOUR_WIN_EFI_UUID) then FINALLY, the code to add in the  /etc/grub.d/40_custom\ is menuentry 'Windows 10' { search --fs-uuid --no-floppy --set=root YOUR_WIN_EFI_UUID chainloader (${root}...

 I thought it would be terribly handy to have a USB flash drive with some files, eg my favourite movies, attached to my router. I couldn't understand why I couldn't see my  files, until I found a post suggesting that most routers only recognised FAT32. Well, no one has used that for  years I thought, what am I to do? So then I thught, ok, I can format a USB stick FAT32. Only... it's a 128GB USB stick and Windows 10 doesn't allow you to format FAT32 that large. Loads of comments on blogs where the command line was advocated saying that the windows command line also didn't work. So I tried in linux on the Raspberry Pi B+. It really was a simple as lsblk to identify which device, and then sudo mkfs.fat -F 32 /dev/sdb1 to format the USB stick. It took about 10 seconds. I then moved the USB stick to my computer with the mnovie files, copied them across, and put the USB stick in my router.  The router's admin page recognised the USB stick, and VLC showed the media...

 I wasn't sure what I wanted it for, but I wanted it. So I got it, nice n cheap off ebay. I'm thinking it will make a nice very low powered Urbackup server to replace the beast that I only turn on occasionally.  It's a model 1 B+ and the kindly owner included a wifi USB dongle. The installed original Raspbian from 2014 was slow in terms of desktop responsiveness, but riskos is lovely and slick. So it's still useful hardware.  Anyway, I've gone for the "lite" version of the latest Raspian. It has booted fine and I've got the wifi dongle going by doing this: from here https://leoncode.co.uk/articles/enabling-wifi-raspberry-pi-command-line/ don't forget it's  ip addr show  to see network device IPs. Now trying to port forward 22 to my Raspberry pi and I get this when trying to ssh in So I guess I've not enabled ssh. That's to come next...