『第 4 楼』:
使用 LLM 解释/回答一下
IMG是个仅有十几KB的软件，可谓短小精悍。它在运行后常驻内存，在扩充内存中可模拟软盘的效果，使用时可随时用热键CTRL+ALT+S+D+X激活IMG（表示按住CTRL+ALT现依次按下S、D、X），IMG激活后，在屏幕的顶部弹出如下窗口：
其中： FILENAME栏为要恢复的映象文件名。 DRIVE为用以模拟的软盘盘符，可选A或B。注意：在激活IMG后，实际的A或B盘不能访问，只有将IMG从内存中卸去，方可访问。 FORMAT为要恢复的映象文件格式，有HD-COPYA、HD-COPYM和DISKDUPE三种，分别对应HDCOPY的A、M版本和DUP形成的映象文件。DDI文件要用DISKDUPE格式，IMG文件一般用HD-COPYM格式。 READ为将待恢复的映象文件读入模拟盘，完成后显示DONE。 WRITE将模拟软盘的内容写回到映象文件或写入到指定的文件名。
MESSAGE栏显示各种信息。 使用时，在FILENAME栏内回车，输入要恢复的映象文件名（扩展名也要输入）选择好对应的格式，将光标移至READ栏内回车，IMG开始从磁盘上将文件恢复至内存，并模拟为指定的软盘，完成后READ栏显示DONE，这时光标移至WRITE栏，此时你可以直接按ESC键返回DOS，用DIR察看模拟盘的内容，并可直接拷贝或安装。 DOS环境下的文件安装比较容易，在第一张盘的内容恢复完后，键入安装命令直接安装，待提示插入下一张盘时，再用热键呼出IMG，读入新的映象文件，再继续安装，直至完成。
IMG is a software with only more than ten kilobytes, which can be described as compact and powerful. After running, it stays in the memory and can simulate the effect of a floppy disk in the expanded memory. When using, you can always activate IMG with the hotkey CTRL+ALT+S+D+X (which means hold down CTRL+ALT and then press S, D, X in sequence). After IMG is activated, the following window pops up at the top of the screen:
Among them: The FILENAME column is the image file name to be restored. The DRIVE is the floppy disk drive letter used for simulation, which can be A or B. Note: After activating IMG, the actual A or B disk cannot be accessed. Only when IMG is removed from the memory can it be accessed. The FORMAT is the image file format to be restored, which are HD-COPYA, HD-COPYM and DISKDUPE, corresponding to the A, M versions of HDCOPY and the image file formed by DUP respectively. The DDI file should use the DISKDUPE format, and the IMG file generally uses the HD-COPYM format. READ is to read the image file to be restored into the simulated disk, and DONE is displayed when completed. WRITE is to write the content of the simulated floppy disk back to the image file or to the specified file name. The MESSAGE column displays various information. When using, press Enter in the FILENAME column, enter the image file name to be restored (the extension should also be entered), select the corresponding format, move the cursor to the READ column and press Enter, IMG starts to restore the file from the disk to the memory and simulate it as the specified floppy disk. After completion, DONE is displayed in the READ column. At this time, move the cursor to the WRITE column. At this time, you can directly press the ESC key to return to DOS, use DIR to view the content of the simulated disk, and can directly copy or install. The file installation in the DOS environment is relatively easy. After the content of the first disk is restored, type the installation command to install directly. When prompted to insert the next disk, use the hotkey to call out IMG, read the new image file, and then continue the installation until it is completed.
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