There seems to be a cool unconventional method to test your analogue (PAL / SECAM) or digital (DVB-T) TV receiver (set-top box, unit, tuner etc.);
all you need is a PC running Linux with X11 and a video card with analog VGA output (preferably not very old one),
just read the following article (by Fabrice Bellard, 2005):
(I've not tested it personally yet, but it looks promising enough).
Showing posts with label test. Show all posts
Showing posts with label test. Show all posts
2013-01-06
HOWTO: stress-test a USB flash drive for bad blocks in Linux
Once upon a time you may like to test your USB flash drive [or maybe a SATA HDD, who knows] for bad blocks.
First of all, backup all the data stored on the target drive;
then you should unmount any mounted partitions located on that drive:
Then you can begin the tests (CAUTION: these tests will destroy all the stored data on the tested drive).
You can use
or with pseudorandom data:
and it will stop unexpectedly on a bad block.
And there's also a little more handy utility called
It will sequentially fill the entire
References:
First of all, backup all the data stored on the target drive;
then you should unmount any mounted partitions located on that drive:
# umount /dev/sdz1You can use
dd utility to fill the drive with zeros:# dd if=/dev/zero of=/dev/sdz# dd if=/dev/urandom of=/dev/sdzAnd there's also a little more handy utility called
badblocks:# badblocks -wso /tmp/badblocks.log /dev/sdz/dev/sdz device with some patterns (0xAA, 0x55, 0xFF, 0x00), then read and compare the read data with an actual pattern. A list of bad blocks will be written to /tmp/badblocks.log file.References:
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