how to resize a virtualbox vdi on mac os x

#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X INSTALL#
#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X DRIVER#
#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X SOFTWARE#

#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X INSTALL#

You have to download a separate module for that Install the ext2 FUSE module:

#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X SOFTWARE#

This piece of software however does not support ext file systems.

This software is not currently being developed.

Install the latest release of MacFUSE from google.

#HOW TO RESIZE A VIRTUALBOX VDI ON MAC OS X DRIVER#

We need to do one further step to mount ext2/ext3 file systems.įive: I installed driver softwares that made me able to mount ext2/3 filesystem and mount it again However, it has no support for ext2/ext3 filesystem popular in Linux. In addition, it has extended support for FAT32, UDF, UFS, and NTFS (in read only mode). The automount failed so run hdid with -nomount switch.Vhdiutil: attach failed - no mountable file systems I unmounted the image and mounted it again with -section switch.The image was currently mounted, but unrecognized by Mac OS. This was because, i previously attached the ubuntu.img without supplying the -section switch.Hdiutil: attach failed - Resource temporarily unavailable Now I again used hdid utility to mount the image by offsetting 28 sectors.Now I can use hdid utility to safely mount this image.įour: I Attached the image with hdid utility with -section switch, to offset 28 sectors

The number of sectors to offset is 28.

You can optionally use calculator to get the number of sectors.

But I need number of sectors, so I had to divide the number by 0x200 (decimal 512) to get the appropriate disk position.

The byte position I need is 0x5000 (omitting leading zeros). It is read two digits at a time back to the front. The color is used here to show the position of the number. Since I had to read 4-byte, I used -n 4 at the byte offset 0x158, I used -s 0x158.

Here, the switches -C is canonical display, -s is skip offset byte from beginning, and -n is length bytes of input.

I used man hexdump to read more about it.

We can use the hexdump utility icluded with Mac OS to retrieve the value where the raw disk image begins.

Third: I found the position from which the raw disk image starts

The mounted image can be used from cli or gui alike.

The final value can be used with -section parameter in hdid utility to mount the image.

This value is divided by number of bytes per sector that is 0x200 (decimal 512).

It is decided by reading 4-byte, 32-bit integer at byte offset 0x158 (decimal 344) in the.

To find the starting position of raw disk image, we have to do some simple calculations with these facts in consideration VDI header stops and the raw disk image begins.

VDI image contains header information with partition information and raw disk image after that. Hdid utility actually attaches raw disk image via a blockdevice. The unrecognized format was due to the header information in the.

Now, hdid recognized the image and it was available in /dev/disk2 but it could not be read properly due to unrecognized format in the file.

Now I tried to mount it again with different extension $ hdid -nomount ubuntu.img /dev/disk1.I tried to supply different extension (.IMG) to the hdid utility, by linking ubuntu.vdi to ubuntu.img $ ln ubuntu.vdi ubuntu.img.VDI format was not recognized by hdid utility $ hdid: attach failed - not recognized The -nomount switch does not mount the image automatically, but makes it available under /dev folder $ hdid -nomount ubuntu.vdi rw- 1 Username staff 7968 Aug 5 11:03 ubuntu.vbox-prev rw- 1 Username staff 7969 Aug 5 11:03 ubuntu.vbox I changed it to current directory in the terminal by using cd commandĭrwx- 6 Username staff 204 Aug 5 01:12 Logs.The image file I found was named ubuntu.vdi This is generally stored under BirtualBox folder. Find the folder where the image is stored.It cannot be done when VrrtualBox is running I have explained it with the places where I made mistakes and what I did to correct those mistakes.įirst: I searched and found the VirtualBox.VDI image file, that I wanted to mount I carried out following steps for mounting. In Mac OS, we can use hdid tool and in Linux/Solaris, we can use losetup resp. VDI image to Unix like operating system like Mac OS. Here is a Geeky way of Mounting VirtuaBox. VDI file, I google a bit and found the way to do it. Mounting the VDI image in Linux system is similar and in fact much easier with the availability of some other tool.For mounting the VirtualBox. I am describing the method I used to mount the VDI images in the Mac OS system. This allows us to browse file like other file on the system. Sometimes it is very useful to mount VirtualBox.

How to resize a virtualbox vdi on mac os x