Ros-dev November 2011

ros-dev@reactos.org

33 participants
21 discussions

Re: [ros-dev] HDD Geometry switch
by Love Nystrom 02 Dec '11

02 Dec '11

Olaf, please don't leave, the project needs you just as much as it needs the developers. Eric, Olaf's regression testing can not entail patching/rebuilding the system to accomodate disk structure (as you surely realize). That said, your reasons for change are sound, but perhaps you can make provisions to temporarily revert this if it causes massive problems. The timing _is_ not good if indeed a release is close at hand.. Can it wait until after the release? Alex, calling Olaf "not an OS tester" is a bit harsh, don't you think? Not everyone can be as weather hardened and experienced as you are. Regarding the reasons for change: Max CHS capacity: 10 bit C, 6 bit S, 8 bit H 2^10 * 2^6 * 255 == 16711680 sect(512) == 8.5 GB This is the geometry Eric wants to use, which makes sense because it can utilize the full CHS addressing capacity, and reflects the absolute limit of BIOS int 13h CHS calls. Previous 32S 64H CHS limit: 2^10 * 32 * 64 == 2097152 sect(512) == 1 GB This is an artificial and unnecessary limit, imposed by some strange design decision in Redmond a long long time ago. For non-devs: In CHS mode BIOS has an absolute disk limit of 8.5 GB, due to the available address bits, a 10/6 bit Cylinder/Sector composite, and an 8 bit head number. Any disk bigger than that can only be addressed in LBA mode (logical sector nr), which has a limit of 2^32 sectors == 2 TB. And, if anyone didn't know, the geometry parameters are stored in the boot sector, not in the MBR. There's more to it, but I stop at that. So.. Eric's change _should_ not cause any problem on disks larger than 8.5 GB, since they run in LBA mode by necessity. Concordingly, there could be forseeable problems on virtual disks which will often be smaller than 8 GB and may be running CHS mode. That'll be my penny to the pot for now. PS. A standard sector is 512 bytes. Bigger sectors, e.g 1kB, have been used in the past to increase capacity, but are _very_ unusual since they require proportionately higher bit frequencies on the media and are error-prone. Best Regards // Love

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Monthly status meeting
by Aleksey Bragin 01 Dec '11

01 Dec '11

Hello, Let me invite you to the monthly status meeting taking place last thursday of this month, 24th of November, 19:00 UTC. The meeting will be atirc://fezile.reactos.org (Port 6667, no SSL) in the channel #meeting. Note that the IRC service will only be started shortly before the meeting. Everyone is invited to listen, and active community members have their passwords so that they can participate in the discussion. If someone still is not getting passwords sent before a meeting - please email Colin or Pierre before the meeting started to get one. Proposed agenda for the meeting: 1. Release status 2. Website revamp status 3. CMake adoption status More suggestions are welcome as usual. With the best regards, Aleksey Bragin.

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HDD Geometry switch
by caemyr＠myopera.com 28 Nov '11

28 Nov '11

Is the new geometry backward-compatible? If i recreate the partitions, will they be visible when i regress test revisions before 54511? -- With best regards Caemyr

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Rbuild debug & KVM tester offline
by Pierre Schweitzer 28 Nov '11

28 Nov '11

Hi, due to connectivity issues with our servers in Sweden, I've taken our rbuild debug buildslave & our KVM testbot offline. This doesn't affect ISOs storage for the moment. Regards, Pierre

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Sending pointers with non pointer functions!
by James Tabor 27 Nov '11

27 Nov '11

I see this and I LMFAO! co_IntSendMessageNoWait(Window->head.h, WM_WINDOWPOSCHANGING, 0, (LPARAM) WinPos); co_IntSendMessageNoWait(WinPos.hwnd, WM_WINDOWPOSCHANGED, 0, (LPARAM) &WinPos); There is more too! Amazing! Please tell me this is not wrong!!!! James

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Re: [ros-dev] New harddisk geometry
by Love Nystrom 25 Nov '11

25 Nov '11

Hi People, I'm back after my ordeal in Europe and finally got an inet line.. But now I've over 300 mails from the list to wade through.. Ugh. It's gonna take some time to get up to speed. Hi Eric, That's all fine, it's just an educated choice of disk parameters as I see it. But anyway, all disk handling software (drivers etc) should honor whatever disk parameters you write in the boot record when you format the partition, and whatever geometry you write in the MBR when the disk gets partitioned, whether it's this or that. Just in case someone forgot ;) Best Regards Love > From: Eric Kohl <eric.kohl(a)t-online.de> > To: ReactOS Development List <ros-dev(a)reactos.org> > Date: Mon, 21 Nov 2011 23:17:40 +0100 > Subject: [ros-dev] Announcement: New harddisk geometry next weekend > Hi! > > I plan to change the standard harddisk geometry from the old 32 sectors and 64 heads geometry to the > new 63 sectors and 255 heads geometry next weekend. The old disk geometry was used up to > Windows NT4 and the new geometry is used since Windows 2000. So I guess it is time for ReactOS to > make this change too. ;-) > > This should improve the compatiibility with other OSs because every modern OS uses the new disk > geometry. > > Please note that you must delete and re-create all partitions on your virtual harddisk in order to get > a clean partition table when the new disk geomerty is in use. > > Regards, > Eric

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Re: [ros-dev] [ros-diffs] [cgutman] 54484: [SCSIPORT] - Implement ScsiPortGetLogicalUnit
by Timo Kreuzer 25 Nov '11

25 Nov '11

Am 24.11.2011 01:07, schrieb cgutman(a)svn.reactos.org: > Author: cgutman > Date: Thu Nov 24 00:07:15 2011 > New Revision: 54484 > > URL: http://svn.reactos.org/svn/reactos?rev=54484&view=rev > Log: > [SCSIPORT] > - Implement ScsiPortGetLogicalUnit > > Modified: > trunk/reactos/drivers/storage/scsiport/scsiport.c > > ... > + > + /* Return the logical unit miniport extension */ > + return (LunExtension + 1); > } This looks broken to me. The old code was "&LunExtension->MiniportLunExtension", which seems to make more sense.

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Re: [ros-dev] [ros-diffs] [jgardou] 54462: [RTL] - explicitly truncate some values, so it doesn't count as an error for compiler/MSVC runtime checker
by Timo Kreuzer 24 Nov '11

24 Nov '11

That doesn't make much sense. Whats the point of the LOWORD() macro, if not truncating it ? Fix the macro if its broken. Am 20.11.2011 20:45, schrieb jgardou(a)svn.reactos.org: > Author: jgardou > Date: Sun Nov 20 19:45:06 2011 > New Revision: 54462 > > URL: http://svn.reactos.org/svn/reactos?rev=54462&view=rev > Log: > [RTL] > - explicitly truncate some values, so it doesn't count as an error for compiler/MSVC runtime checker > > Modified: > trunk/reactos/lib/rtl/image.c > > Modified: trunk/reactos/lib/rtl/image.c > URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/image.c?rev=54462&… > ============================================================================== > --- trunk/reactos/lib/rtl/image.c [iso-8859-1] (original) > +++ trunk/reactos/lib/rtl/image.c [iso-8859-1] Sun Nov 20 19:45:06 2011 > @@ -369,7 +369,7 @@ > { > SHORT Offset; > USHORT Type; > - USHORT i; > + ULONG i; > PUSHORT ShortPtr; > PULONG LongPtr; > PULONGLONG LongLongPtr; > @@ -379,7 +379,6 @@ > Offset = SWAPW(*TypeOffset)& 0xFFF; > Type = SWAPW(*TypeOffset)>> 12; > ShortPtr = (PUSHORT)(RVA(Address, Offset)); > - > /* > * Don't relocate within the relocation section itself. > * GCC/LD generates sometimes relocation records for the relocation section. > @@ -398,16 +397,16 @@ > break; > > case IMAGE_REL_BASED_HIGH: > - *ShortPtr = HIWORD(MAKELONG(0, *ShortPtr) + (LONG)Delta); > + *ShortPtr = HIWORD(MAKELONG(0, *ShortPtr) + (Delta& 0xFFFFFFFF)); > break; > > case IMAGE_REL_BASED_LOW: > - *ShortPtr = SWAPW(*ShortPtr) + LOWORD(Delta); > + *ShortPtr = SWAPW(*ShortPtr) + LOWORD(Delta& 0xFFFF); > break; > > case IMAGE_REL_BASED_HIGHLOW: > LongPtr = (PULONG)RVA(Address, Offset); > - *LongPtr = SWAPD(*LongPtr) + (ULONG)Delta; > + *LongPtr = SWAPD(*LongPtr) + (Delta& 0xFFFFFFFF); > break; > > case IMAGE_REL_BASED_DIR64: > > >

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Meeting with Stephen Gary Wozniak (Apple 'father')
by Александр 24 Nov '11

24 Nov '11

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Announcement: New harddisk geometry next weekend
by Eric Kohl 23 Nov '11

23 Nov '11

Hi! I plan to change the standard harddisk geometry from the old 32 sectors and 64 heads geometry to the new 63 sectors and 255 heads geometry next weekend. The old disk geometry was used up to Windows NT4 and the new geometry is used since Windows 2000. So I guess it is time for ReactOS to make this change too. ;-) This should improve the compatiibility with other OSs because every modern OS uses the new disk geometry. Please note that you must delete and re-create all partitions on your virtual harddisk in order to get a clean partition table when the new disk geomerty is in use. Regards, Eric

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Ros-dev November 2011