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edd-utils [2006/09/08 12:51] mcb30 |
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- | ====== OVERVIEW ====== | ||
- | |||
- | mkeddlinks is a simple utility which creates symlinks for the BIOS INT | ||
- | 13 devices present at the time the system booted. For example: | ||
- | |||
- | [root@dolphin /]# mkeddlinks | ||
- | [root@dolphin /]# ls -l /dev/bd* | ||
- | lrwxrwxrwx 1 root root 3 Sep 7 04:07 /dev/bda -> hda | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bda1 -> hda1 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bda2 -> hda2 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bda5 -> hda5 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bda6 -> hda6 | ||
- | lrwxrwxrwx 1 root root 3 Sep 7 04:07 /dev/bdb -> hdc | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bdb1 -> hdc1 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bdb2 -> hdc2 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bdb5 -> hdc5 | ||
- | lrwxrwxrwx 1 root root 4 Sep 7 04:07 /dev/bdb6 -> hdc6 | ||
- | |||
- | It is designed to be incorporated into initial ramdisk images | ||
- | (initrds) and to be run immediately before the root filesystem is | ||
- | mounted. The mount command can then use e.g. /dev/bda1 in order to | ||
- | mount the first partition from whichever device the system booted | ||
- | from, without needing to know where this device is currently attached. | ||
- | |||
- | ====== DOWNLOADING ====== | ||
- | |||
- | You can obtain edd-utils from https://sourceforge.net/project/showfiles.php?group_id=176708&package_id=203341 | ||
- | |||
- | ====== INTERNALS ====== | ||
- | |||
- | mkeddlinks uses the information provided by the "edd" module in 2.6 | ||
- | kernels via the /sys/firmware/edd directory. It reads the | ||
- | "mbr_signature" file of each INT 13 device found via this directory, | ||
- | and matches it against the signature of all disks in the system (found | ||
- | via /proc/partitions). When a match is found, symlinks are created | ||
- | for the disk device and all partitions within the disk. | ||