fail to install win10 in virtualbox

[Sea Joe]

I met an error page while installing win10 in virtualbox, and my current OS is win7. Anyone can help me, thanks.

[scottgus1]

The guru meditated on a lack of memory:

00:00:32.400748 !! VCPU0: Guru Meditation -27 (VERR_NO_PAGE_MEMORY)

Though you had enough free memory at the start of the VM:

00:00:02.106246 Host RAM: 8138MB (7.9GB) total, 5835MB (5.6GB) available
00:00:02.250313 RamSize <integer> = 0x0000000100000000 (4 294 967 296, 4 096 MB, 4.0 GB)

it appears that something else came in and chewed it all up before the VM could use it. Try running the VM first after rebooting the host, and leaving other apps off until the OS installs. Or reduce VM RAM to 3 or 2 GB.

[fth0]

FWIW, the VirtualBox hardening code rejects C:\Windows\System32\uxtheme.dll multiple times (15+). Perhaps this plays a role in the memory shortage ...

[mpack]

Or possibly the fact that Windows 7 is not a supported host OS.

[Sea Joe]

The guru meditated on a lack of memory:

00:00:32.400748 !! VCPU0: Guru Meditation -27 (VERR_NO_PAGE_MEMORY)

Though you had enough free memory at the start of the VM:

00:00:02.106246 Host RAM: 8138MB (7.9GB) total, 5835MB (5.6GB) available
00:00:02.250313 RamSize <integer> = 0x0000000100000000 (4 294 967 296, 4 096 MB, 4.0 GB)

it appears that something else came in and chewed it all up before the VM could use it. Try running the VM first after rebooting the host, and leaving other apps off until the OS installs. Or reduce VM RAM to 3 or 2 GB.

Thanks, you are right. It's ok now while I changed the memory to 2G. My computer have 8G memory.
By the way, if I wish to have 5 virtualBox installing win10 and every win10 will maintain 4G memory, is that mean I should have 20G memory at least?

[mpack]

By the way, if I wish to have 5 virtualBox installing win10 and every win10 will maintain 4G memory, is that mean I should have 20G memory at least?

The VM only needs RAM when it is running. If you had 5 VMs running at once, each being Win10 with 4GB and 2 cores then your host would need 30GB and 12 cores - since the host needs RAM and cores too.

Happily, there are few reasons to run so many VMs at once.