mount: you must specify the filesystem type
You correctly decide to mount the particular partition by specifying its offset but the offset parameter is in bytes and fdisk shows the offset in blocks (the block size is shown before the partition list --- usually 512). For the block size 512 the command would be: sudo mount -o...
gcc; arm64; aarch64; unrecognized command line option '-mfpu=neon'
Advanced SIMD (aka NEON) is mandatory for Aarch64, so no command line option is needed to instruct the compiler to use NEON. If you want to enable auto vectorization optimisations so that the compiler automatically uses NEON instructions, then compile with -O3 or -O2 -ftree-vectorize. The Aarch64 and ARM backends...