4 ms·

What distinction are you trying to make? The disklabel utility can be used to install, examine, or modify the label on a disk drive or pack. The dis

What distinction are you trying to make? The disklabel utility can be used to install, examine, or modify the label on a disk drive or pack. The disk label contains information about disk characteristics (size, type, etc.) and the partition layout, stored on the disk itself. disklabel supports 15 configurable partitions, `a' through `p', excluding `c'. The `c' partition describes the entire physical disk, is automatically created by the kernel, and cannot be modified or deleted by disklabel. By convention, the `a' partition of the boot disk is the root partition, and the `b' partition of the boot disk is the swap partition, but all other letters can be used in any order for any other partitions as desired. The word "slice" does not come up in disklabel's man page at all. http://man.openbsd.org/disklabel http://man.openbsd.org/disklabel

rjsw 5y ago
How about "The other BSDs use slices". FreeBSD [1] and NetBSD[2] can use GUID partition tables as well as traditional BSD disk labels. [1] https://www.freebsd.org/cgi/man.cgi?query=gdisk&apropos=0&sektion=8&manpath=FreeBSD+13.0-RELEASE+and+Ports&arch=default&format=html https://www.freebsd.org/cgi/man.cgi?query=gdisk&apropos=0&se... [2] https://man.netbsd.org/gpt.8 https://man.netbsd.org/gpt.8
- trasz 5y ago
  At least in case of FreeBSD, it’s more “uses GPT by default” than “can use”.
anthk 5y ago
Your openbsd sd0e partition wont show up under fdisk. sd0c will as it can be maped to either the openbsd A6 partition under MBR/GPT or a disklabel using the whole disk.
- foxfluff 5y ago
  As far as I know the c partition is always the whole disk, regardless of what you have (or don't have) in MBR or GPT. If you want to image the whole disk with dd, you'll reach for rsd0c, always. But I still don't understand what distinction you're trying to make. Yes, disklabel partitions don't show up in MRB, just as GPT partitions won't. No surprise that the three different partitioning methods aren't exactly aware of each other.

rjsw 5y ago

How about "The other BSDs use slices". FreeBSD [1] and NetBSD[2] can use GUID partition tables as well as traditional BSD disk labels. [1] https://www.freebsd.org/cgi/man.cgi?query=gdisk&apropos=0&sektion=8&manpath=FreeBSD+13.0-RELEASE+and+Ports&arch=default&format=html https://www.freebsd.org/cgi/man.cgi?query=gdisk&apropos=0&se... [2] https://man.netbsd.org/gpt.8 https://man.netbsd.org/gpt.8

trasz 5y ago
At least in case of FreeBSD, it’s more “uses GPT by default” than “can use”.

anthk 5y ago

Your openbsd sd0e partition wont show up under fdisk. sd0c will as it can be maped to either the openbsd A6 partition under MBR/GPT or a disklabel using the whole disk.

foxfluff 5y ago
As far as I know the c partition is always the whole disk, regardless of what you have (or don't have) in MBR or GPT. If you want to image the whole disk with dd, you'll reach for rsd0c, always. But I still don't understand what distinction you're trying to make. Yes, disklabel partitions don't show up in MRB, just as GPT partitions won't. No surprise that the three different partitioning methods aren't exactly aware of each other.