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Feb
25
comment Removing support for Lenovo's Battery Safeguard “feature”
@Synetech - or the installation of Hoverboard batteries. I'd go for the "we're selling them in the US and don't want to get embroiled in Lithium Flamer lawsuits because the third party battery was a dud".
Feb
25
comment Can I move a hard disk platter to another hard drive?
A human hair is the equivalent of hitting Mount Everest at the distances heads fly above the platter, finger prints and common house dust is like running into the Rocky Mountain range. These devices are worked on in clean rooms with air filtration and humans clad in bunny suits. It's all over with, smack it with a hammer.
Feb
22
reviewed Approve What is Intel rapid start technology and how can i enable it?
Feb
22
reviewed Approve ALT+arrow moving between words in zsh and iTerm2
Feb
17
comment Clear cache for specific domain name in chrome
Since F12 developer tools is built into Chrome, using them is open to everyone, not just "Developers" for clearing specific items.
Feb
15
answered MS SQL equivalent of MyISAM?
Feb
8
comment accidentally deleted administrative account in registry
Did you create a Windows State setpoint before mucking with the registry? Always a good idea.
Feb
2
comment Why doesn't ZIP Compression compress anything?
And I've even seen it operate in reverse causing the compressed archive to be larger than the individual compressed files.
Feb
2
comment How can I remove a website accidentally added to Firefox's list of HSTS sites?
Hehe, yah! All the easy answers don't work, this does for Mozilla Firefox on Linux. Chromium was easy, Firefox wasn't until you figured out it was merely editing a text file well hidden away. Something reminiscent of "Beware of the Leopard" about this one. No Vogons sighted, though.
Jan
18
comment #1045 - Access denied for user 'root'@'localhost' (using password: NO)
If this was a database record edit, the password field is filled with a password hash, not the actual password.
Jan
9
comment How many passes do you need to wipe/shred your files to make them not undeletable?
Anything can be proved by FOAF anecdotes.
Jan
5
comment Why should we wipe disks multiple times?
was sealed in an EM shielded container and buried in a secured vault for decades. I could see this in an episode of "Yes, Minister" with Sir Humphrey giving the explanation that retaining the ground bits in a sealed container was merely retaining evidence that the drive with sensitive data had existed and had been destroyed... And over time, the office staff coming to think that the bits could be recovered from the powder.
Jan
5
comment How many passes do you need to wipe/shred your files to make them not undeletable?
@Kromey - Modern drives use servo feedback for head positioning which is a temperature compensating technology. Old drives at one time used stepper motors. With one of these, you could leave a computer unpowered overnight in an unheated garage and have it completely unable to find track 0. Start the computer and let it run half an hour, reset it and it would boot because the platter grew enough to put the track back under the read/write head. It's why we left the server on overnight out in our shop.
Jan
5
comment Why erase file with random patterns instead of all 0's or 1's?
Why bother scrubbing the disk when simply heating the platters above the Curie point will completely erase them? Grind to dust if you must, but a good charcoal fire is cheap.
Jan
5
comment Why erase file with random patterns instead of all 0's or 1's?
In the good old days of MFM encoding, low data density and stepper motors, drives had issues where the inter-track spacing could retain residual magnetization due to lax head positioning and temperature changes. Gutmann's paper was written back in 1996. His 35 pass, multiple fixed pattern overwrite was an attempt to wipe a drive with certainty without knowing anything about it. In the decades since then, he's stated that scrubbing with random data is sufficient for modern high data density drives.
Jan
1
comment Why should we wipe disks multiple times?
The low tech version of the final paragraph that is available to everyone. Bust it, make it glow. Break the drive with a 4lb sledge to expose the discs, use a propane torch to heat them above the Curie point (brighter than cherry red).
Jan
1
comment Why should we wipe disks multiple times?
More recent quote from Dr. Gutmann, “In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques… He recommends a scrub with random data now.
Jan
1
comment Why should we wipe disks multiple times?
We have a cargo cult issue where the Gutmann erase from a time of low data density drives and stepper head controllers keeps getting retold as the gospel truth. 1996 is now 20 years ago, things have changed a bit since then.
Dec
27
comment Will an Ethernet splitter work?
Heh, I've seen some built-in gigabit ports retch when faced with these. They used to be quite useful for 100Mbit equipped computers plus a VOIP phone. You have to set the link negotiation to manual 100Mbit Half Duplex and hope that Gigabit ports will deign to play at those speeds.
Dec
26
comment What is the maximum memory size of a motherboard?
And the maximum usable memory installable on a motherboard is dependent on what the manufacturer set sit to be. Common cheap laptops may be limited to 4 or 8GB even though the above components are able to support more.