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PE小常识:启动需耗费多少内存

更新时间:2026-08-19 02:40:04 | 编辑:心偿~ | 信息来源:互联网

  很多用户都对PE启动盘充满了好奇,究竟这个启动盘启动一次需要耗费我们多少的内存呢?也便是PE启动的占用多少内存的问题。我们该如何准确地知道这个数据呢?计算方法马上分享给大家。

  什么是PE启动?

  PE启动盘,其实就是一种紧急系统。可以通过设置BIOS的启动先后顺序使PE在电脑刚启动时优先引导启动,是使用工具在Windows界面下制作的一个简易的、临时的、应急用系统。

  当本来的电脑系统出现问题时,如进入不了系统。但是电脑中又有重要资料未备份时,就可以使用PE系统进入电脑。对硬盘中需要备份的文件进行复制或剪切保存工作,其界面和Windows2000类似。 简单的讲,PE就等于是可视化,操作更简便的DOS。

  PE启动时会占用多少内存的计算方法:

  PE的启动内存和核心有关,大概为下面这个公式(只是大概)

  1、用CAB压缩过的核心

  X*2+16(单位MB)(X为未压缩时的核心大小)

  2、不用CAB压缩的核心

  X+32(单位MB)(X为未压缩时的核心大小)

  这里就可以解释为什么NTFS IMG的核心一般不用CAB压缩,因为NTFSIMG格式的核心用CAB压缩效果很差,压缩率低,例如:50M的NTFS IMG用CAB压缩后才35M,而70M(里面有60M的文件)的FATIMG用CAB压缩后,体积变成了26-29M左右。所以NTFS IMG不用CAB压缩,体积减小不多,而启动内存要加倍,因小失大

  关于安装配置文件txtsetup.sif的简单说明

  相信玩过精简版系统的朋友都知道这个文件的用途,同样PE里也有这个文件,废话不多说,我就简单讲讲这个文件。

  [WinntDirectories]

  这个字段是用代码表示文件拷贝的目标文件夹,其根目录为%WinDir%即安装指定的Windows文件夹。

  [SourceDiskFiles]

  根据u盘启动前面设定的代码表示文件拷贝的具体细节。

  下面三段为集成SATA SCSI等驱动时所用

  [HardwareIdsDatebase]—硬件标识

  [SCSI.load]——SCSI驱动加载

  [SCSI]——SCSI设备说明

  通过这篇文章的讲解,你明白了什么是PE启动,也明白了此启动究竟会占据我们多少内存了吧,精打细算的用户们,欢迎一起交流来计算下大家的PE启动究竟需要多少内存!


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