[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6},"actionData","errors","routes/tags.$tag",{"_7":8,"_9":10,"_11":12},"tag","usb","docs",[13],"count",1,{"_14":15,"_16":17,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27},"slug","make-a-bootable-usb-from-an-iso","title","制作可启动 USB 安装盘","date","2023-11-11","description","使用 dd 命令将 ISO 写入 USB 设备制作启动盘","content","

查看磁盘列表

在 macOS 上查看可用磁盘：

diskutil list\n

在 Linux 上：

lsblk\n

确认目标 USB 设备路径（如 /dev/sdX 或 /dev/disk2）。

写入 ISO 到 USB

使用 dd 命令写入：

sudo dd bs=4M if=/path/to/file.iso of=/dev/sdX status=progress oflag=sync\n

参数说明：

bs=4M: 设置块大小为 4MB，提高写入效率
if: 输入文件，即 ISO 镜像路径
of: 输出设备，即 USB 设备路径
status=progress: 显示写入进度
oflag=sync: 同步写入，确保数据完整写入

macOS 特别说明

macOS 上可能需要先卸载 USB 设备：

# 卸载设备（不是推出）\ndiskutil unmountDisk /dev/diskN\n\n# 使用 /dev/rdiskN（原始设备）写入更快\nsudo dd if=/path/to/file.iso of=/dev/rdiskN bs=4m status=progress\n

注意事项

确认目标设备路径正确，错误的路径可能导致数据丢失
USB 设备容量需大于 ISO 文件大小
写入完成后可能需要弹出设备再重新插入使用

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