Now that we know that our new drive is labelled sdc (Linux uses sda, sdb, sdc etc. The easiest way to locate a specific volume, for example a flash drive just inserted, is to look for a size which approximately matches the size of the disk inserted. When you execute lsblk for the first time, you will want to take some time looking at the various drives available. Some SD manufacturers even include the size of a reserved special area for wear leveling on the SD card as main disk space, yet such space is not accessible to the user, and you may end with for example only 115G showing as usable. So when you buy that next drive, read the fine print on the back and check whether they use the “1000” bytes per KiloByte or the “1024” bytes per Kibibyte standard. We can see in this case this works out near perfectly when we look at the byte based size:Īnd 119.3 (as reported by lsblk) = 119.3 x 1073700000 = 128092410000. This is because lsblk will give you the result in Gibibyte ( 1 Gibibyte = 1073700000 bytes) whereas drive manufactures sell their drives using the “Gigabyte” standard (a Gigabyte = 1000000000 bytes). It is not uncommon for a 128GB drive to show as only ~115-120G in lsblk. This drive is marketed as 128GB, and it’s a major brand. do a listing similar to ls (‘directory listing’) on all bulk (blk) volumes.Īs you can see, there is a 119.3G drive available. Here we are executing lsblk: you can read this as ls blk: i.e. Next, navigate to your terminal/command prompt (On Ubuntuįor example you can do this by simply clicking Activities at the top left of the screen > type Terminal and click the Terminal icon). For USB memory stick/flash drives, simply insert them via a USB port to your computer.
For SD cards, you will usually use a SD card reader which you can insert via a USB port to your computer. If it is a SSD (Solid State Drive) or HDD (Hard Disk Drive), you will want to shutdown your computer, insert the drive and reboot the system. To start, plug your drive into your machine.
#Crystal diskmark install directory how to
How to benchmark Disk performance on Linux – CLI Tools $ – requires given linux commands to be executed as a regular non-privileged user # – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command Privileged access to your Linux system as root or via the sudo command.
#Crystal diskmark install directory software
Requirements, Conventions or Software Version Used If the results of the test is significantly different from what is advertised, there is a strong possibility that the memory card you are using is fake or defective.How to benchmark Disk performance on Linux Software Requirements and Conventions Used Software Requirements and Linux Command Line Conventions Category Testing your memory card’s performance is a good indicator of its authenticity and integrity. When you receive your memory card in the mail or from the store, it is always recommended that you test your memory card’s performance before using it. Be careful of online marketplaces such as Amazon and eBay, where third-party sellers can openly sell fake products. To avoid buying fake memory cards, a general rule of thumb is to always buy from reputable sources. It is not uncommon for consumers to unknowingly buy and use fake memory cards. Unfortunately in this day and age, the online marketplace is littered with fake products. In most cases, when an issue arises with your dash cam, the first place to troubleshoot is your memory card. The application features a graphical display showing the read and write speed of your storage device.īecause dash cams are writing intensive by nature and are constantly exposed to harsh conditions, using the right memory card is crucial to the overall performance of your dash cam. How to Use CrystalDiskMark to Test the Performance of Your Memory CardĬrystalDiskMark is a benchmark tool used to measure and test the performance of a storage device, including but not limited to SSDs, flash memory, and HDD.
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