A hiba az issue2-s simpleboot-ról. Az aktuális könyvtárbeli ez a speciállis, a ../simpleboot a "standard"
$ file simpleboot
simpleboot: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=1d80601627e7cd4df04e27bdaa0f376feeddd9b1, for GNU/Linux 4.4.0, not stripped
$ file ../simpleboot
../simpleboot: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=6b5d5422e8f0bcd33b02762d117b270ddf80657e, for GNU/Linux 3.2.0, stripped
$ ./simpleboot
./simpleboot: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by ./simpleboot)
./simpleboot: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by ./simpleboot)
$ ../simpleboot
Simpleboot disk image tool, Copyright (c) 2023 bzt, MIT license
https://gitlab.com/bztsrc/simpleboot
simpleboot [-v|-vv] [-k <name>] [-i <name>] [-s <mb>] [-p <mb>] \
[-u <guid>] indir outfile
simpleboot [-v|-vv] [-k <name>] [-i <name>] -b <device>
-v, -vv increase verbosity / validation
-k <name> set the default kernel filename (defaults to 'kernel')
-i <name> set the default initrd filename (by default none)
-s <mb> set the disk image size in Megabytes (defaults to 35M)
-p <mb> set the boot partition size in Megabytes (defaults to 33M)
-u <guid> set the boot partition's unique identifier (defaults to random)
-b <device> no new image, make an already existing device bootable instead
indir use the contents of this directory for the boot partition
outfile output image file name
Loader versions: edd7ba80 (x86)
$
Amúgy próbálgatni szívesen próbálok, semmi gond nincs vele.
A legutolsó verzió is ugyanúgy villódzik.