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How to understand the Fedora HAL server, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

After a long time of learning Fedora HAL, so share with you, you may encounter Fedora HAL problems, read this article you must have a lot of gains, here will introduce the solutions to Fedora HAL problems, I hope this article can teach you more. Fedora HAL-Hardware Abstraction Layer (hardware extraction layer), which I translated literally. I don't know how to translate it. In my understanding, it is similar to Windows's hardware management.

USB removable storage

Digital camera; MMC card, SD card; USB MINI disk; USB removable hard disk (a box with USB interface, which contains notebook hard disk and mainframe hard disk), 1394 interface removable storage value storage; audio recorder; DV, etc., most of which are removable storage.

Support for fat, ntfs, fat32, reiserfs, ext3 and hfs file systems

Fedora core 4.0supports almost all file systems, so there is no need to write a kernel. If you have a mobile hard drive that is NTFS partitioned like me, please install kernel NTFS module support

The kernel already supports fat format, both fat16 fat32 and NTFS kernel-moduls should be installed for file systems in NTFS format. I don't think it makes much sense for NTFS to move disk partitions (but I have a removable hard disk and one partition is ntfs) because NTFS is not writable; so use fat or fat32

If your machine has 1394 interface, if you want to buy a storage device with large capacity, it is recommended to buy a box with 1394 interface. USB does not support writing large files, no matter what file system it is (in fact, I have tried it); another 1394 interface hard disk can be stably loaded during system startup.

Plug and play, system automatically mount removable storage device

1. First make sure that the following services are turned on

[root@localhost beinan] # chkconfig-- list | grep Fedora HALdaemon

Fedora HALdaemon 0: enable 1: enable 2: enable 3: enable 4: enable 5: enable 6: enable

[root@localhost beinan] # chkconfig-- list | grep messagebus

Messagebus 0: enable 1: enable 2: enable 3: enable 4: enable 5: enable 6: close

If it is not enabled in 3 and 5 modes, you need to open the

[root@localhost beinan] # chkconfig-- level 0123456 Fedora HALdaemon on

[root@localhost beinan] # chkconfig-- level 0123456 messagebus on

Open all patterns; check to see if the service we mentioned is running in all modes; please use the chkconfig-- list mentioned above | grep server name

If after doing so, the services we mentioned will automatically run in all modes; there is no need for us to interfere artificially, but sometimes we have to turn them on and off ourselves for debugging; see the next section

2. Most of the services running in standalone mode are in the / etc/init.d directory

Usage:

/ etc/initrd server start | stop | status | restart | condrestart

For example:

For example, if we want to start the Fedora HALdaemon server, we will:

[root@localhost beinan] # / etc/init.d/ HALdaemon start

Start the Fedora HAL daemon: [OK]

[root@localhost beinan] # / etc/init.d/ HALdaemon restart

Shutting down the Fedora HAL daemon: [OK]

Start the Fedora HAL daemon: [OK]

[root@localhost beinan] # / etc/init.d/ HALdaemon stop

Shutting down the Fedora HAL daemon: [OK]

[root@localhost beinan] # / etc/init.d/ HALdaemon status

Fedora HALd has stopped

This beginner knows; start starts; restart restarts; stop stops; status status

The three servers we mentioned in this article are all in the / etc/init.d directory

3. in fact, if we can get the above steps done, most of the mobile storage devices are plug and play, and they are also mounted automatically.

Although the system plug and play, but the permissions may not meet our needs; in addition, if the text is stored in the fat and ntfs file systems, the Chinese support for file names is not very friendly, so solve.

After reading the above, have you mastered how to understand the Fedora HAL server? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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