I am trying to upgrade my server but only have 1gb of space on my 4gb flash drive. What would be the best way to clear up unnecessary files on my flash drive without deleting anything crucial that will prevent it from booting? I looked through the flash drive with unRAID's file manager but couldn't find any obviously large files that are not needed.

Would now be a good time to switch from flash drive booting to internal booting? I haven't looked into the process, but flash booting has been working for me for the past 16 years, that I'm scared to mess with it.

Edited 5 hours ago5 hr by fonzie

4GB should be enough to be able to upgrade via the GUI, although occasional housekeeping to get rid of extra files might be necessary.

You can always delete the contents of the Logs folder before trying to upgrade via the GUI. If necessary you can also delete the Previous folder.

You can always also use Manual Install method which needs less free space on the flash drive.

31 minutes ago, fonzie said:

I haven't looked into the process, but flash booting has been working for me for the past 16 years, that I'm scared to mess with it.

It would be perfect timing for you to upgrade to a durable industrial USB flash drive at the minimum cost.

I'd suggest buying today - the stock is about to run out.

https://forums.unraid.net/topic/199642-psa-on-industrial-mlc-usb-boot-drives-mlc-nand-end-of-life-and-last-accessible-stock