Nearing the point of “overwhelmed and in need of bourbon” flashpoint. ;-D
In attempting to catch up and digest the LOAD of information that @sgt-mike and @tea-for-one tossed my way this morning (much appreciated, pay no attention to the gagging trying to digest it) I’ve bumbled over several points for which I seek clarity and some making headway updates. This is where efforts have left me at present:
[1] bootable Ubuntu 24 USB formatted and in-hand;
BTW, the instruction that the USB device need be “4Gb or larger” seems to be off by 50%… [see step 2, Requirements] The result looks like 6.2Gb. Thankfully my 16Gb USB and chronic trust issues save the day! 

[2] I’m still looking for “how to backup files and directories” on the Linux system with different people recommending their favorite solutions, which, often leads me to consider downloading and learning a new application and its functions; something that I’d like to keep as simple as possible at present. The glut of info is already considerable. A backup method needs solved prior to attempting a reinstall fix. (the present effort)
the ‘rsync’ command sounds intriguing… though I’ll have to learn to use it first.
What to backup has gotten lost in a glut of information… currently re-reading to see if I can list the necessary targets:
- /home (user files and preferences?)
- /Documents (others); is on a separate SSD device [2Tb_ExFat],
- not involved in OS install,
- referenced by symlink
- No backup needed, a new install will reconfigure (?) for each:
- / (root)
- /boot/efi
- /swap (to be resized, if prompted)
- ? others to backup ?
- /etc/fstab file recommended to backup (reference of present mounted devices)
[3] Several well-meaning people, and several of the sources recommended continue to cite cases where additional partitions are a valid way to proceed… I’m getting conflicting recommendations. And with the number of web pages I’ve reviewed recently, I’m losing track of where I read what.
- Apparently a standard install is / (root) with no other partition? older partitions deprecated.
- The SWAP file is [1] far too large at 40Bg and wastes space OR… [2] should be “left alone”;
- with 32 Gb of RAM on the machine, I’m thinking SWAP at 2 to 4Gb.
- “A /home partition is useful to separate user files from any new system install…” (revisits the original question it seems; prior to discovering the underlying issues of improper disk partitions)
[3] Does the following inference mean that I can copy data from /var/lib/snapd/snaps , reinsert it into the same directory for a new install, and have the programs I have set up presently for my use look like “my programs and preferences” without having to jump through days of setup app by app?
→ “Note that it’s relatively easy to move all snap files to a different location, by just mounting /var/lib/snapd/snaps elsewhere. The data will typically live in /var/snap.” a quote from [Canonical SnapCraft Forum] @niemeyer
…or perhaps I’m dreaming. If that’s possible, I’m curious how that’s done, and if it causes rather than solves issues.
[4] With a new install, reformatting vs. “fixing” the m2 system drive on the goal sheet, this is a curiosity… but:
Is the GParted live ISO actually a Linux distro which has GParted available upon boot-up? Nobody has expressed that clearly if so, and the term “ISO” doesn’t convey that to us “mere mortals” until it is clearly specified. If that’s the case, I’ve been confused over nothing… because I’m destined to reinstall and reformat the m2 system drive rather than “fix” the mess it is currently. (sorry, typing/thinking aloud… feel free to ignore that)
As you might see, I’m getting lost in a sea of information. Presently working to learn a system for reliable backup…