Why Windows needs RAID driver?
in [Hardware]
|
From: Nime on 21 Jan 2010 09:30 Good question, let me explain: If you install Windows on SATA, later you cannot turn to RAID (single disk) or vice versa. On Intel's site: ---------------- If your RAID controller is not enabled, enabling the RAID controller is not recommended or supported when a SATA hard drive is the boot drive. Enabling the RAID controller may cause an immediate blue screen with an 0x0000007b error code, followed by a reboot. If you wish to enable it, you will need to reinstall the operating system. ---------------- I can see if at first SATA enabled then turn to RAID, Windows cannot recognize the disks then BSOD occurs. But why I cannot turn a single disk from RAID to SATA? Strange, the disk is accessable and Windows boots, starts, it's logo waves, then unexpectedly reboots. "Shenan Stanley" <newshelper(a)gmail.com>, iletide �unu yazd� news:uKvzMHqmKHA.2188(a)TK2MSFTNGP04.phx.gbl... > > What's wrong with watching and following directions when you install? :-) > > -- > Shenan Stanley > MS-MVP
From: DL on 21 Jan 2010 09:56 Raid & Sata are two entirely unconnected items of hardware Not all raid controlers support single disk (jbod) Raid does not require sata, or vice versa It depends on the raid controler as to how you configure a sys. "Nime" <eminakbulut(a)gmail.com> wrote in message news:e4$ydYqmKHA.3128(a)TK2MSFTNGP02.phx.gbl... > Good question, let me explain: > > If you install Windows on SATA, later you cannot turn to RAID (single > disk) > or vice versa. On Intel's site: > > ---------------- > If your RAID controller is not enabled, enabling the RAID controller is > not recommended or supported when a SATA hard drive is the boot drive. > Enabling the RAID controller may cause an immediate blue screen with an > 0x0000007b error code, followed by a reboot. If you wish to enable it, you > will need to reinstall the operating system. > ---------------- > > > I can see if at first SATA enabled then turn to RAID, Windows cannot > recognize the disks then BSOD occurs. > But why I cannot turn a single disk from RAID to SATA? Strange, the disk > is accessable and Windows boots, > starts, it's logo waves, then unexpectedly reboots. > > > > "Shenan Stanley" <newshelper(a)gmail.com>, iletide �unu yazd� > news:uKvzMHqmKHA.2188(a)TK2MSFTNGP04.phx.gbl... >> >> What's wrong with watching and following directions when you install? >> :-) >> >> -- >> Shenan Stanley >> MS-MVP > >
From: Phillip Windell on 21 Jan 2010 11:13 "Nime" <eminakbulut(a)gmail.com> wrote in message news:e4$ydYqmKHA.3128(a)TK2MSFTNGP02.phx.gbl... > Good question, let me explain: > > If you install Windows on SATA, later you cannot turn to RAID (single > disk) > or vice versa. On Intel's site: The comparison is SATA -vs-- SCSI,....not SATA -vs- RAID RAID with a single disk,...by definition,...is impossible. The "A" in RAID,...means "Array",..which by definiton means more than one. A single disk can only be a "Non-RAID Volume". It can run from a RAID Controller but the controller will operate as a SCSI Controller or a SATA Controller,...but not as a RAID Controller,...at least with respect to that one drive. You can easily mix RAID Volumes and Non-RAID Volumes on the same Controller on the same BackPlane. -- Phillip Windell The views expressed, are my own and not those of my employer, or Microsoft, or anyone else associated with me, including my cats. -----------------------------------------------------
From: Anteaus on 25 Jan 2010 13:13 DOS accesses disk through interrupt 13. This will include any ROM chip on a RAID card or RAID-enabled mobo, so the process is transparent to DOS, which thinks it's accessing an ordinary disk no matter what. Windows, OTOH, uses direct access to the disk-interface hardare. Reason it does this is that int13 is not particularly fast. Since Windows bypasses any interface-specific ROMs in so doing, it must be told in literal terms -by installing a special driver- how to address the RAID array. The same is also true with SATA, if this is operating in AHCI mode. Hope this clears things up. "Nime" wrote: > While in DOS level all drives are visible/accesable why Windows cannot > use RAID disks and asks for necessary drivers? Especially during > Windows installation. > > > If I format a RAID partition as FAT I may install DOS : ) What's wrong with > Win? > . >
From: Nime on 26 Jan 2010 03:01
Thanks Anteaus - and it's Antaeus : ) - that was the expected answer. I wish there was a way to emulate int 13 in Windows if there is no driver, if the drive is listed in BIOS, DOS, etc, Windows should use it, no matter how it can. "Anteaus" <Anteaus(a)discussions.microsoft.com>, iletide şunu yazdı news:53003938-C802-4F3E-A07C-DBC6F4B430DA(a)microsoft.com... > DOS accesses disk through interrupt 13. This will include any ROM chip on a > RAID card or RAID-enabled mobo, so the process is transparent to DOS, which > thinks it's accessing an ordinary disk no matter what. > > Windows, OTOH, uses direct access to the disk-interface hardare. Reason it > does this is that int13 is not particularly fast. Since Windows bypasses any > interface-specific ROMs in so doing, it must be told in literal terms -by > installing a special driver- how to address the RAID array. > > The same is also true with SATA, if this is operating in AHCI mode. > > Hope this clears things up. > > "Nime" wrote: > >> While in DOS level all drives are visible/accesable why Windows cannot >> use RAID disks and asks for necessary drivers? Especially during >> Windows installation. >> >> >> If I format a RAID partition as FAT I may install DOS : ) What's wrong with >> Win? >> . >> |