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Filesystems, Disks and Memory

Partitioning External Drive

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Special Forums Hardware Filesystems, Disks and Memory Partitioning External Drive
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Old 08-06-2009
Partitioning External Drive
I am about to set up another triple boot drive, but this one is connected to my MacBook with a USB adapter. I want to be sure that I do not overwrite data on my laptop's internal drive. This is the command I used for the internal drive, which was found in an Ubuntu forum, but the sizes were changed to match my drive.

diskutil resizeVolume disk0s2 45G "JHFS+" 4-Linux 20G "MS-DOS FAT32" 4-Windows 0b

If memory serves, there may have been a typo on the last character. I thought it was supposed to be a 'G', but I am very new to this.

I assume that the disk0s2 needs to be changed, but I do not know how to tell what the external drive is called. I have looked in Disk Utility and the System Profiler, but there seems to be nothing there. UNIX must be the answer.
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LEARN ABOUT CENTOS

grub2-probe

GRUB-PROBE(3)						     Library Functions Manual						     GRUB-PROBE(3)

NAME

       grub-probe -- Probe device information for a given path.

SYNOPSIS

       grub-probe  [-m | --device-map=FILE]
		   [-t | --target=(fs|fs_uuid|fs_label|drive|device|partmap|
				   abstraction|cryptodisk_uuid|
				   msdos_parttype)]
		   [-v | --verbose] (PATH|DEVICE)

DESCRIPTION

       grub-probe probes a path or device for filesystem and related information.

OPTIONS

       --device
	      Final option represents a DEVICE, rather than a filesystem PATH.

       --device-map=FILE
	      Use FILE as the device map.  The default value is /boot/grub/device.map.

       --target=(fs|fs_uuid|fs_label|drive|device|partmap|msdos_parttype)
	      Select among various output definitions.	The default is fs.

	      fs     filesystem module

	      fs_uuid
		     filesystem UUID

	      fs_label
		     filesystem label

	      drive  GRUB drive name

	      device System device

	      partmap
		     partition map module

	      abstraction
		     abstraction module

	      cryptodisk_uuid
		     cryptographic container

	      msdos_partmap
		     MS-DOS partition map

       --verbose
	      Print verbose output.

       (PATH|DEVICE)
	      If --device is passed, a block DEVICE.  Otherwise, the PATH of a file on the filesystem.

SEE ALSO

       info grub

								  Wed Feb 26 2014						     GRUB-PROBE(3)