[Solved] Access Raw Partition in Windows 7 host

Discussions related to using VirtualBox on Windows hosts.

[Solved] Access Raw Partition in Windows 7 host

Postby buumber » 22. May 2012, 18:12

Hello guys,

The key to access raw partition from guest with Windows 7 host is partition's filesystem must be RAW. Below steps are my guide.
- Virtualbox 4.1.14
- Windows 7 x64

1. Begin with an unallocation space:
1.unallocation-space.png
1.unallocation-space.png (9.15 KiB) Viewed 9534 times

2. Create new partition with DISKPART, create partition only, don't format.
2.diskpart-create-partition.png
2.diskpart-create-partition.png (37.97 KiB) Viewed 9534 times

3. Result in Windows Disk Management
3.windows7-raw-partition.png
3.windows7-raw-partition.png (7.47 KiB) Viewed 9534 times
buumber
 
Posts: 4
Joined: 22. May 2012, 17:56

Re: [Solved] Access Raw Partition in Windows 7 host

Postby buumber » 22. May 2012, 18:17

4. Create raw disk with VboxManage internalcommands
4.virtualbox-internal-cmd-create-raw-disk.png
4.virtualbox-internal-cmd-create-raw-disk.png (10.5 KiB) Viewed 9533 times

5. Files created
5.virtualbox-internal-cmd-create-raw-disk-result.png
5.virtualbox-internal-cmd-create-raw-disk-result.png (5.02 KiB) Viewed 9533 times

6. Open xxx.vmdk file (not xxx-pt.vmdk) to edit and delete rows end with ZERO to Virtualbox see real size of partition
6.modify-vmdk-file.png
6.modify-vmdk-file.png (31.06 KiB) Viewed 9533 times
buumber
 
Posts: 4
Joined: 22. May 2012, 17:56

Re: [Solved] Access Raw Partition in Windows 7 host

Postby buumber » 22. May 2012, 18:26

7. Assign disk to VM, the real size is recognized
7.assign-to-vm.png
7.assign-to-vm.png (24.33 KiB) Viewed 9533 times


8. DONE.

After boot vm (my guest is Windows XP) you can format new drive and use, file system of this partition in host still RAW (don't touch it).

Note: You can assign only one raw disk per VM, otherwise this error occurs:
8.assign-more-than-one-raw-partition.png
8.assign-more-than-one-raw-partition.png (31.47 KiB) Viewed 9533 times
buumber
 
Posts: 4
Joined: 22. May 2012, 17:56


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