Hfs file system linux mac os#
Hfs file system linux code#

This extension is not available at boot time, what means that the booting Macintosh can't access the contents of the ISO CD-ROM.

Hfs file system linux mac os#

More, the Mac OS needs a special driver (called an extension) to access the ISO 9660 CD-ROMs. Macintosh bootable media are plain HFS media, with a volume descriptor in the logical sector 0, then with a partition table in logical sector 1 pointing to the partitions created on the medium (even if the Mac OS never loads from a CD-ROM other partitions than the first one). We don't think that this standard applies to Macintosh computers. Does the El Torito Standard Applies to Macintosh Computers?

Hfs file system linux code#

Such a boot method is radically different from a normal boot, where the system accesses the sector 0 of its drives, in some predetermined order, to find a boot sector, that is code which will load the boot code at some memory address. In the case of a multisession CD-ROM, this boot system must be stored in the last session (see section 2.0 of the standard). This entry points to one or several bootable images (images of floppy disks or of other media). The principle is to put a so-called 'boot entry' in the sector 17, after the volume descriptor (stored in sector 16).

This standard, called 'El Torito', can be downloaded from Phoenix Web site (Phoenix is one of the promoters of this standard). Booting a Computer From a CD-ROMДЄ specification was published in 1995 to describe a method to produce bootable ISO 9660 CD-ROMs. We also publish on this site a page on bootable HFS CD-ROMs which you should visit if you don't need to produce a hybrid CD-ROM. We'll only speak about bootable hybrid CD-ROMs in the following text. Please see our FAQ on MacImage for more details on the autostart feature and our page on Macimage for a method to produce such autostarting CD-ROMs on a PC. In the second case, the user of a running computer inserts a CD-ROM (or any other removable medium) in the drive and expects an application to start automagically. In the first case, a computer was not running and is launched (booted) under an operating system fully or partially stored on the medium when you start it. It is useful to stress the difference between booting a computer (bringing it to life under an operating system) and autostarting a CD-ROM (launching a program or a data file when the medium is inserted in the drive).

This page is about the creation of bootable hybrid (ISO/HFS) CD-ROMs (CD-ROM able to boot a Macintosh computer and a PC running under Windows or Unix/Linux).