Soft Switch and speed limit of optical drive in Linux

Article Title: Soft Switch and speed limit of optical drive in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

I. Soft Switch of the optical drive:

Eject-r cdrom # unlock the warehouse door of the specified Optical Drive Device

Open the warehouse door of the specified optical drive device. If there is only one optical drive, use eject directly. If there are two optical drive devices, specify the device according to the/dev/device file, for example, if there is a combo cdrom on my machine and the device file is/dev/cdrom1, run it with eject-r cdrom1.

Use the-t parameter to close the warehouse. For example, use the following command to close my COMBO:

Eject-t-r cdrom1 # parameters of-t for warehouse access

The advantage of eject is that the optical drive can be automatically attached to the file system, and the file system is automatically removed when the file system is popped up.

Ii. Speed Limit of the optical drive:

Eject-x n cdrom # specify the drive speed as n

N is the maximum speed. In actual use, n must be greater than or equal to 4, and there is no limit on the upper limit.

Eject also comes with a small software volname, which is used to read the name of the disc. Usage: If your Linux does not have X-Windows, you can easily know the volume of the disc in TEXT mode.

Volname/dev/cdrom

Tip: Question about the Chinese character file name. For example, if an eject is attached to an optical drive file system, the file names with Chinese characters on the optical drive will all be "?". After checking the source code of the eject, it is found that the setting in the/etc/fstab file is called to mount the file system, as long as iocharset = gb2312, codepage = 936 is added to the last and third columns of the/dev/cdrom line. Re-use eject to mount the disc. You will find that the Chinese character file name is correctly displayed.