Użytkownik Raffaello napisał:
> Mr. Misio wrote:
>
>> dd if=/dev/zero of=/dev/sda
>>
>> ile to to moze trwac na przecietnym 4-letnim PC?
>>
>> top nie pokazuje specjalnie aktywnosci dd, ale tak ma ponoc byc :)
>>
>> trwa juz z godzinke, dysk 500GB sata
>
> # hdparm -t /dev/zero
>
> /dev/zero:
> Timing buffered disk reads: 16 MB in 0.00 seconds = 6597.94 MB/sec
> BLKFLSBUF failed: Inappropriate ioctl for device
>
> Teoretycznie. W praltyce generowanie zer to żmudny proces, więc...Te 16 MB/s
> x60 sekund w minucie.... I tak dalej. Sam sobie policz, ale na pewno dłuuuużej
> niż godzinę.
> A swoją drogą - nie lepiej urandom, jeśli chodzi o zamazanie dysku?
>

Ok. 2 godziny trwalo.

Chcialem low level format zrobic :)

Reallocated Sectors Count: Current:3 Worst:3 Threshold:36
wg. CrystalDiskInfo (po zamazaniu zerami)

Powinienem sie przejmowac?

=============

OS : Windows 7 Professional SP1 [6.1 Build 7601] (x64)
Date : 2013/11/16 20:25:56

----------------------------------------------------
------------------------
(2) ST500DM002-1BD142
----------------------------------------------------
------------------------
Enclosure : ST500DM0 02-1BD142 USB Device (V=04FC, P=0C25, sp1) - st
Model : ST500DM002-1BD142
Firmware : KC45
Serial Number : 9VMCPMY0
Disk Size : 500.1 GB (8.4/137.4/500.1/500.1)
Buffer Size : 16384 KB
Queue Depth : 32
# of Sectors : 976771055
Rotation Rate : 7200 RPM
Interface : USB (Serial ATA)
Major Version : ATA8-ACS
Minor Version : ATA8-ACS version 4
Transfer Mode : SATA/150 | SATA/600
Power On Hours : 6228 godzin
Power On Count : 40 count
Temparature : 27 C (80 F)
Health Status : Stan zły
Features : S.M.A.R.T., AAM, 48bit LBA, NCQ
APM Level : ----
AAM Level : D0D0h [ON]

-- S.M.A.R.T. ----------------------------------------------------
----------
ID Cur Wor Thr RawValues(6) Attribute Name
01 114 _84 __6 00000000EE28 Read Error Rate
03 100 _97 __0 000000000000 Spin-Up Time
04 _94 _94 _20 00000000197F Start/Stop Count
05 __3 __3 _36 000000007CA0 Reallocated Sectors Count
07 _69 _60 _30 0000008924D4 Seek Error Rate
09 _93 _93 __0 000000001854 Power-On Hours
0A 100 100 _97 000000000000 Spin Retry Count
0C 100 100 _20 000000000028 Power Cycle Count
B7 100 100 __0 000000000000 Vendor Specific
B8 100 100 _99 000000000000 End-to-End Error
BB __1 __1 __0 0000000002AF Reported Uncorrectable Errors
BC 100 _99 __0 000100010002 Command Timeout
BD 100 100 __0 000000000000 High Fly Writes
BE _73 _58 _45 00051B1B001B Airflow Temperature
C2 _27 _42 __0 80000000001B Temperature
C3 _46 _26 __0 00000000EE28 Hardware ECC recovered
C5 100 _91 __0 000000000000 Current Pending Sector Count
C6 100 _91 __0 000000000000 Uncorrectable Sector Count
C7 200 200 __0 000000000000 UltraDMA CRC Error Count
F0 100 253 __0 1B67000012A8 Head Flying Hours
F1 100 253 __0 0000CC20A22D Total Host Writes
F2 100 253 __0 00004BFE5FBE Total Host Reads