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doc: update command/losetup.md (#639)

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illmons 2025-03-03 22:27:45 +08:00 committed by GitHub
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@ -45,7 +45,7 @@ losetup [ -d ] loop_device
dd if=/dev/zero of=floppy.img bs=512 count=2880 dd if=/dev/zero of=floppy.img bs=512 count=2880
``` ```
使用 losetup将磁盘镜像文件虚拟成快设备： 使用 losetup 将磁盘镜像文件虚拟成块设备：
```shell ```shell
losetup /dev/loop1 floppy.img losetup /dev/loop1 floppy.img
@ -57,7 +57,7 @@ losetup /dev/loop1 floppy.img
mount /dev/loop0 /tmp mount /dev/loop0 /tmp
``` ```
经过上面的三步之后，我们就可以通过/tmp目录，像访问真实快设备一样来访问磁盘镜像文件floppy.img。 经过上面的三步之后，我们就可以通过/tmp目录，像访问真实块设备一样来访问磁盘镜像文件floppy.img。
卸载loop设备： 卸载loop设备：