old boot can’t delete
I think you have the KEEP flag set for those. Look over the items on the right and unset the KEEP flag and try again.
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keep flag is No
Time to download a System Configuration, do a fresh new install and upload your System configuration?
A simple:
zfs list -t all -r boot-pool
should show if they still exist.
If they do, we may want the output from:
zfs get all boot-pool/X
replacing X with one of the boot environments.
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24.10.2.4 is your oldest. Try that
You were supposed to run zfs get all boot-pool/24.10.2.4 when you were booted into 25.10.2
zfs destroy -r boot-pool/ROOT/OLD solve,tks all
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Well, if the problem is solved, then okay.
However, I wondered if the GUI had a mistake and had some file system attribute that prevented the GUI from removing the old datasets used by the old boot environment. I guess it does not mater now.