hdparm is a good place to start.

sudo hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads:   12540 MB in  2.00 seconds = 6277.67 MB/sec
Timing buffered disk reads: 234 MB in  3.00 seconds =  77.98 MB/sec

sudo hdparm -v /dev/sda will give information as well.

dd will give you information on write speed. If the drive doesn't have a file system use of=/dev/sda. Otherwise, mount it on /tmp and write then delete the test output file.

sudo dd if=/dev/sdb1 of=/media/USBHDD1/output bs=80 k count=10k; rm -f /media/USBHDD1/output

10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 1.08009 s, 77.7 MB/s

hukl$ script/server -h
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
Usage: server [options]
    -p, --port=port                  Runs Rails on the specified port.
                                     Default: 3000
    -b, --binding=ip                 Binds Rails to the specified ip.
                                     Default: 0.0.0.0
    -d, --daemon                     Make server run as a Daemon.
    -e, --environment=name           Specifies the environment to run
                                     this server under
                                     (test/development/production).
                                     Default: development

    -h, --help                       Show this help message.

 

sudo rails server webrick -b 0.0.0.0 -p 3001 -d

How to turn off Xbox DVR through the Registry Editor

If you do not have an Xbox account and are not signed into the Xbox App you can disable Xbox DVR by using the Registry Editor.

Note: This process is more advanced and is not recommended for novice users.

  1. Open Registry Editor (Run > regedit)
  2. Navigate to HKEY_CURRENT_USER\System\GameConfigStore
  3. Set the value of DWORD "GameDVR_Enabled" to 0
  4. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\
  5. Create key "GameDVR".
  6. Create DWORD 32bit called "AllowGameDVR" and set to 0
  7. Restart your computer.

Or download this register file, execute and restart:

DisableGameDVR