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Article #11226Re: CreateFile and ReadFile
From: Andrue Cope
Date: Fri, 20 Feb 2004 13:34
Date: Fri, 20 Feb 2004 13:34
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On Fri, 20 Feb 2004 21:05:11 +0800, ray wrote: > i need to test the relibility of this USB flash disk (so need byte-byte > access the disk). Oh well for testing purposes you can just read/write in blocks. The only difference testing byte-by-byte would make is more function calls. Some devices will cache at the track level anyway (any modern disk would) but I'm not sure about flash memory. I would suggest a program to dump known data to each block then read it back to test it. Invert the data and repeat. If you search the web you should also find test patterns that are known to stress certain types of storage media. For a hard disk I can't see the point in the specific test pattern unless you are a disk manufacturer but for flash memory it's not an unreasonable thing to try ISTM. If you're lucky the manufacturer might even be able to supply one. -- Andrue Cope [Bicester UK]
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10cc67,a2e178d9fedcf99e X-Google-Attributes: gid10cc67,public X-Google-ArrivalTime: 2004-02-20 05:40:37 PST From: Andrue Cope <no.spam@spammy.com> Subject: Re: CreateFile and ReadFile Newsgroups: borland.public.cppbuilder.nativeapi User-Agent: 40tude_Dialog/2.0.10.1 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit References: <4034e792$1@newsgroups.borland.com> <ih67f05a4bzf.1w8m6acs1eu0e.dlg@40tude.net> <4034fbe4$1@newsgroups.borland.com> <7aeaoh9a6g9g.15gt18x45vjm.dlg@40tude.net> <40360608$1@newsgroups.borland.com> Date: Fri, 20 Feb 2004 13:34:05 +0000 Message-ID: <l52qpbhp7lwy.1wdrj2fkltkg8$.dlg@40tude.net> NNTP-Posting-Host: 217.207.223.34 X-Trace: newsgroups.borland.com 1077284064 217.207.223.34 (20 Feb 2004 05:34:24 -0800) Lines: 22 Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail