>>>/sqt/

short answer: no
long answer: ram is volatile memory, as opposed to a hdd or ssd which is non-volatile. what this means is that it loses it's ability to store information when powered off. however, this is a simplified explanation, what really happens is the data becomes corrupted rapidly upon power loss (or from not refreshing them in the case of dynamic ram [dram], which the kind you pictured is).
attacks that involve extracting data from recently powered-off ram is a thing, though this usually involves physical access to the machine and special hardware, like for example an attacker might use freeze spray on the ram to cool it down, which slows its' degradation to a more manageable amount of time (seconds instead of milliseconds). i'm not sure if a warm reboot (typical reboot that doesn't involve powering off) would result in another OS having access to parts of the ram contents of another os. theoretically if the systems' firmware doesn't clear ram as part of POST then that is possible. if you feel you can't trust it to do so, then you could just turn the computer off (completely, like switch the psu off) for several seconds before booting into another os will be enough to ensure ram won't contain any useful information anymore.

>>106817158
No, but the management engine embedded on your CPU can.

>>106817158
Are you fucking losing it?

>>106817158
It could access that other drive, yes.

Most smalltime malware does not. People and organizations going after you or your organization may be interested and willing tho.

>>106817158
>Windows
Which version of Windows?
For 11 and 10, we are mostly limited to telemetry stuff.
For older versions where security updates are toast, we can just access everything, but it's highly unlikely we give a shit about you personally enough to bother.
Windows 7 for example, you don't even have to be online - a Wi-Fi or Bluetooth chip on your MoBo and some random fuck's iPhone in the vicinity and I can jack off to your photos.

>>106817158
>turn off power supply
>unplug computer
>plug computer back in
>turn on power supply
The memory should be clear after doing that if you're so paranoid. But to be honest anything with an internet connection can and will spy on you and collect every tiny piece of data there is to collect about you and there's nothing you can do about it.

>>106817158
If the Linux drive is connected while running Windows, then in theory yes, but in practice Windows cannot mount ext4 without WSL.

>>106817158
on pc, no
on laptop, maybe with citation needed

>>106818393
what if linux is luks'd? windows cannot decrypt that even with wsl, right?

>>106817158
Yes. Be afraid, very afraid, always

>>106817233
Yeah. My geek friend told me to wait until the fans stopped turning, any capacitors should be empty by then. Only then its a clean reboot, surely depends on the fan but i mean like 3,4 seconds

>>106819729
ehh, i could understand that but only in a specific context. like when i want to power off a computer for servicing i will often switch it off (from the wall/psu), then hit the power button. this might cause the fans to spin for a split second.
if you just "shut down" and wait for the fans to stop, that doesn't really mean anything, as the computer can and will stop the fans even if other parts are powered. this isn't theoretical either, "standby" is literally a standard power state where most things are turned off (including the cpu and fans) but the ram is still powered and kept refreshed.
since op is talking about hypotheticals ("can", and not "does" or "will"), just observing fans stopping doesn't mean anything /by itself/

>>106819799
>>106819729
-- also keep in mind that even in the case of fans connected directly to the power supply's 12v lines, and not to the motherboard fan headers, this doesn't change anything, as modern power supplies cut off their 12v/5v lines when "turned off" and have a separate 3.3v/5vsb lines which remain powered at all times even in standby/off states. basically modern pc power supplies are never actually fully off until you flip the switch on them or unplug them.

Surely if you are this worried, you would get two computers.