How to do a function, like quick format?
in [MFC]
|
From: bluestar on 5 May 2008 01:51 Maybe it is a stupid question. I want to do a function, like quick format I have a idea that i use "CreateFile" to open PhysicalDrive and write all zero sectors by sectors until all size over. But it will destroy all information, including MBR and FAT32 Boot Record , and spend much time to do. How to do to let the function, like quick format, avoid deleting MBR and and FAT32 Boot Record? Not write all zero into sector 1 on each drive(C:,D:) or on each PhysicalDrive, right?
From: Joseph M. Newcomer on 5 May 2008 02:21 Note that what you describe, to open PhysicalDriveN and write to it, is not the same as "formatting". It is certainly the same as "erasing". Why do you need to do this? You need to look into the DeviceIoControl operations for file systems. joe On Sun, 4 May 2008 22:51:57 -0700 (PDT), bluestar <bluestar8783(a)gmail.com> wrote: >Maybe it is a stupid question. > >I want to do a function, like quick format > >I have a idea that i use "CreateFile" to >open PhysicalDrive and write all zero >sectors by sectors until all size over. >But it will destroy all information, >including MBR and FAT32 Boot Record >, and spend much time to do. > >How to do to let the function, like quick >format, avoid deleting MBR and and FAT32 >Boot Record? > >Not write all zero into sector 1 on each >drive(C:,D:) or on each PhysicalDrive, >right? Joseph M. Newcomer [MVP] email: newcomer(a)flounder.com Web: http://www.flounder.com MVP Tips: http://www.flounder.com/mvp_tips.htm
From: foobar on 5 May 2008 05:05 1. Use CreateProcess API to execute FORMAT command with correct parameters. 2. When above approach is not sufficient, you use undocumented FormatEx API. Long time ago there was something called "fmifs.zip" or so available on the internet which had source code of an example. On May 5, 11:21 am, Joseph M. Newcomer <newco...(a)flounder.com> wrote: > Note that what you describe, to open PhysicalDriveN and write to it, is not the same as > "formatting". It is certainly the same as "erasing". > > Why do you need to do this? > > You need to look into the DeviceIoControl operations for file systems. > joe > > > > On Sun, 4 May 2008 22:51:57 -0700 (PDT), bluestar <bluestar8...(a)gmail.com> wrote: > >Maybe it is a stupid question. > > >I want to do a function, like quick format > > >I have a idea that i use "CreateFile" to > >open PhysicalDrive and write all zero > >sectors by sectors until all size over. > >But it will destroy all information, > >including MBR and FAT32 Boot Record > >, and spend much time to do. > > >How to do to let the function, like quick > >format, avoid deleting MBR and and FAT32 > >Boot Record? > > >Not write all zero into sector 1 on each > >drive(C:,D:) or on each PhysicalDrive, > >right? > > Joseph M. Newcomer [MVP] > email: newco...(a)flounder.com > Web:http://www.flounder.com > MVP Tips:http://www.flounder.com/mvp_tips.htm
From: M. Shoaib Surya on 5 May 2008 07:49 "bluestar" <bluestar8783(a)gmail.com> wrote in message news:ee302aec-32de-4a34-b8b4-aa1d05da2346(a)p39g2000prm.googlegroups.com... > Maybe it is a stupid question. > > I want to do a function, like quick format > > I have a idea that i use "CreateFile" to > open PhysicalDrive and write all zero > sectors by sectors until all size over. > But it will destroy all information, > including MBR and FAT32 Boot Record > , and spend much time to do. > > How to do to let the function, like quick > format, avoid deleting MBR and and FAT32 > Boot Record? > > Not write all zero into sector 1 on each > drive(C:,D:) or on each PhysicalDrive, > right? See the post " How to format a volume" in microsoft.public.win32.programmer.kernel http://groups.google.com.pk/group/microsoft.public.win32.programmer.kernel/browse_thread/thread/58a4433670f29a91/de9ce0f381f21f7c?hl=en&lnk=st&q=%22How+to+format+a+volume%22#de9ce0f381f21f7c - Shoaib
From: Joseph M. Newcomer on 5 May 2008 10:17 The problem with using CreateProcess to create a cmd interpreter that runs a Format command is that if anything goes wrong, you have no idea what happened. Using the APIs, you usually know exactly what happened. joe On Mon, 5 May 2008 02:05:38 -0700 (PDT), foobar <somefoobar(a)gmail.com> wrote: > >1. Use CreateProcess API to execute FORMAT command with correct >parameters. > >2. When above approach is not sufficient, you use undocumented >FormatEx API. Long time ago there >was something called "fmifs.zip" or so available on the internet which >had source code of an example. > > >On May 5, 11:21 am, Joseph M. Newcomer <newco...(a)flounder.com> wrote: >> Note that what you describe, to open PhysicalDriveN and write to it, is not the same as >> "formatting". It is certainly the same as "erasing". >> >> Why do you need to do this? >> >> You need to look into the DeviceIoControl operations for file systems. >> joe >> >> >> >> On Sun, 4 May 2008 22:51:57 -0700 (PDT), bluestar <bluestar8...(a)gmail.com> wrote: >> >Maybe it is a stupid question. >> >> >I want to do a function, like quick format >> >> >I have a idea that i use "CreateFile" to >> >open PhysicalDrive and write all zero >> >sectors by sectors until all size over. >> >But it will destroy all information, >> >including MBR and FAT32 Boot Record >> >, and spend much time to do. >> >> >How to do to let the function, like quick >> >format, avoid deleting MBR and and FAT32 >> >Boot Record? >> >> >Not write all zero into sector 1 on each >> >drive(C:,D:) or on each PhysicalDrive, >> >right? >> >> Joseph M. Newcomer [MVP] >> email: newco...(a)flounder.com >> Web:http://www.flounder.com >> MVP Tips:http://www.flounder.com/mvp_tips.htm Joseph M. Newcomer [MVP] email: newcomer(a)flounder.com Web: http://www.flounder.com MVP Tips: http://www.flounder.com/mvp_tips.htm
|
Next
|
Last
Pages: 1 2 Prev: screen show and print : difference Next: Problem in fullscreen under Vista |