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Archive for February, 2011

SSD drives don’t secure erase

February 23, 2011 Leave a comment

So if you’re in the industry that requires its’ drives secure erased, or even if your a security minded person.  I came across a very interesting study.

In essence it says that because there is some brains on the actual SSD itself, there is no way to be sure you’ve erased the disk.   In a normal HDD, the erase program just writes a ton of 1’s and 0’s to the disk.  The problem is when the erasing program writes to what it think is block X, the SSD might actually write to block Y.  This is because of the way SSDs try to spread out the data so that one particular area of the memory chip isn’t over utilized.

This is quite an interesting article.

http://www.usenix.org/events/fast11/tech/full_papers/Wei.pdf

Categories: Storage Tags: , ,

Inital impressions of Ubuntu 10.10

February 16, 2011 Leave a comment

Alright so even though i work in IT, i actually like Windows OS’s for a few reasons.  Granted i’m refering more towards Windows 7, Server 2008, and maybe XP.

However i’m pretty good with Linux, and i use a 2010 MacBook Pro for work, so suffice to say i’ve worked with the major players.  I recently decided to try my hands at doing a ChromeOS build, but to do so they recommend Ubuntu.  I’ve used Ubuntu in the past, but not anytime recently.  I’ve been using Fedora or CentOS, since i’m comfortable with RHEL.

I have to say i’m really really impressed with the new Ubuntu.  I think it actually could make for a very nice Full-Time OS, even for the average user.  Now granted i wouldn’t give it to the extreme novice, but for your average user, especially a power user it works quite well.  They have made it intuitive, and easy to use.  It is “pretty” which is still necessary as most people don’t want something that looks like it’s from the Windows 3.1 era.

I think i’m going to keep it as a VM for a while, yet i think i’m going to try and do as much work in it as possible.  Here’s to nothing…..

Boot from USB drive in VMware Workstation

February 16, 2011 Leave a comment

Its quite annoying that you can’t boot from a USB Drive in VMware Workstation.  So here’s a simple workaround.

1. Download PloP boot manager http://www.plop.at/en/bootmanager.html#download

2.  Extract the .ZIP

3. Attach the .ISO from the extracted .ZIP to your VM that you want to USB boot.

4. Making sure the USB stick is inserted into your PC, and attached to the VM.

5.  When the PloP boot manager comes up, select “USB”.

Enjoy booting whatever you have on your USB drive.

VMware Workstation USB Issues

February 16, 2011 1 comment

So i’m using VMware Workstation 7.1 to run Ubuntu under my standard Windows 7 desktop.  I’m trying to build ChromeOS to play around with, and i can’t get my USB stick to be seen on my VM.

As it turns out the VMware USB Arbitration Service on my host isn’t started, and in fact wont start.  Turns out there is some USB filter driver causing the issue.  I’m willing to bet it’s part of the driver for my new USB 3.0 Motherboard.

Anyway here is the simple fix.

Shut down Workstation.

Open the registry (Start > Run > regedit).

Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hcmon\.

Create a new key called Parameters.

In Parameters, create a new DWORD value entry named DisableDriverCheck, and then set the value to 1.

This works great and i can now pass USB to my VM.

Enjoy