VirtualBox

Opened 7 years ago

Last modified 7 years ago

#17685 new defect

Weird acting of vboxmanage.exe's --compact flag

Reported by: T800 Owned by:
Component: virtual disk Version: VirtualBox 5.2.8
Keywords: virtual disk, vdi, compact, vboxmanage, modifymedium Cc:
Guest type: Windows Host type: Windows

Description

When using the

vboxmanage modifymedium <virtual VDI disk> --compact

command on a dynamic type VDI disk (previously nulled the free spaces, with Sdelete on Windows), it seems to be successful, though, the resulted image's content cannot be viewed with 7zip anymore, even though, VDI is a supported format of it and before running the command, it was working too. At this point, the image is mountable and the system on it is bootable, like it should. But, after all of these, when i try to clone the image with

vboxmanage clonemedium <input file> <output file>

even though, the operation is finishes, without any problems, the system on the cloned disk, isn't bootable anymore, because the whole VM crashes, right in the middle of the boot process. Suprisingly, it can be opened with 7zip again. Cloning again and again doesn't change anything, while chkdsk cannot find any problems. Additionally, this isn't the first case, when i have to face with this issue, so i guess, i can label it, as reproducible.

Change History (1)

comment:1 by T800, 7 years ago

Additionally, when i simply clone a VDI, after a free space nulling on it, everything is working, like it should. So i think, --compact procedure must be bugged.

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