1 Volatile Memory 1.1 REG REG (Register) is a storage unit inside the CPU, sitting right next to the arithmetic unit — the fastest and smallest level of the storage hierarchy. General-purpose registers (RAX/RBX/RDI on x86, and so on) take part directly in instruction execution, with access latency around 0.2–0.5 ns (roughly one clock cycle), lost on power loss, and typically only tens to hundreds of bytes.

1. What OpenSpec Is OpenSpec is an open-source Spec-Driven Development framework maintained by Fission-AI. It does not try to teach AI new coding tricks. Instead it adds a lightweight “agreement layer” between you and the AI — before any code is written, both sides settle on what to do, in writing.

1. Disk Handling 1.1 Inspect Disks Inspect the new disk 1 fdisk -l Disk /dev/nvme1n1: 3.91 TiB, 4294967296000 bytes, 8388608000 sectors 1.2 Build a RAID0 If you have several small disks, a better approach is to build a RAID0 — this gives you not only a larger storage directory but also higher speed.

1. Creating the Image File 1.1 When Loop Storage Fits Treat an ordinary file as a /dev/loopN block device: reads and writes go through the block device interface, while the backing file is still just a file on the host. Mounting ISO and disk images Local practice and stress testing

1. Viewing Package Dependencies 1.1 Forward Dependencies Which packages it depends on List dependencies 1 apt-cache depends apparmor 1 2 3 4 5 6 7 8 9 10 11 12 13 14 apparmor Depends: debconf # 必须 Depends: lsb-base # 必须 |Depends: debconf # 必须 Depends: <debconf-2.0>