How to configure master and slave in bios for two hard disk drives in a single system

As quickly because the second hard drive is bodily put in, you then need to let the computer’s working system and software program program know that it exists.

Insert the MS-DOS startup disk in your floppy disk drive and power in your PC. After the POST (Power On Self Take a have a look at) course of has started enter the system’s CMOS setup routine as described in your system’s documentation (often by pressing the DEL, F1 or F2 key.

To have the BIOS routinely detect the model new drive and set its parameters you need to enter the Regular CMOS Setup class of the BIOS Setup and make sure that every the Important IDE Master and Important IDE Slave are set to Auto to autodetect the drives on startup.

In case your hard disks and system BIOS are fairly present, it’s most likely that they’ll current assist for the S.M.A.R.T hard disk performance. It’s not essential to try this correct now, nonetheless do you have to do intend to use it, it is best to enable it sooner than too prolonged.

Save the settings and exit the setup routine, allowing the system to boot from the startup disk.

S.M.A.R.T can usually be enabled by the Superior BIOS Choices class of the BIOS Setup.

It’s origins date from 1992, when IBM began supply 3.5-inch hard disk drives which may actually predict their very personal failure – an {{industry}} first. These drives had been equipped with Predictive Failure Analysis (PFA), an IBM-developed know-how that periodically measured chosen drive attributes and despatched a warning message when a predefined threshold is exceeded. Enterprise acceptance of PFA know-how lastly led to S.M.A.R.T (Self-Monitoring, Analysis and Reporting Experience) turning into the industry-standard reliability prediction indicator for every IDE/ATA and SCSI hard disk drives.

Proper this second all most important hard disk drive producers assist S.M.A.R.T. It desires to be enabled in your system BIOS. When it is it might typically monitor the subsequent:

  • Head flying peak data
  • Throughput effectivity
  • Spin-up time
  • Re-allocated sector rely
  • Search error value
  • Search time effectivity
  • Spin try recount
  • Drive calibration retry rely


  • Jul 26, 2012
  • #1
  • Hey,
    I’ve 2 SATA Hard drives. In a single amongst my Hard disk drive, boot sector went unhealthy. So I will probably be unable to boot boot into my computer using that hard drive. I bought one different SATA hard drive. I’ve some needed data on my outdated hard drive. I would love to know how to make my outdated hard drive as slave and my new hard drive as master. As soon as I be a part of new hard drive and outdated hard dive to my computer, outdated hard drive is not detected. I even checked in checked in BIOS. After booting the computer I moreover checked in machine supervisor, my outdated wouldn’t current up. I moreover checked fro the jumper in my hard drive. Jumper is not there in every of my hard drive. I’m sure that solely boot sector is gone unhealthy in my outdated hard drive as a results of I get that message on the show display. Can some one help me turning hard drive master and slave.

    Data: mannequin title of Outdated hard drive is Hitachi. New hard drive is seagate.

    Thanks in advance.


    Posts: 10,605 +464
    • Jul 26, 2012
  • #2
  • There isn’t any such factor as a master/slave with SATA drives.

    You administration which one boots by the boot order in the BIOS. In case your drive just isn’t exhibiting up one factor is critically unsuitable with the drive. Based mostly totally on what you’ve got said, I believe that your drive has died and that error is simply displaying as a results of a boot sector won’t be found on a lifeless drive. Nonetheless sooner than all hope is misplaced.

    I’d try connecting it to a fully totally different SATA port on the motherboard, typically there are larger than 1 controller (SATA I, SATA II, or a RAID) and I suppose there could also be a tiny chance you had a controller go unhealthy. Not going though, esp do you have to plugged the model new drive into the an identical controller and it displays up.

    Jumpers on SATA drives had been used in the earlier (on some drives) to energy a legacy mode if the drive was SATA II and your motherboard would possibly solely take care of SATA I.


    Posts: 12,723 +6,091
    • Jul 26, 2012
  • #3
  • One different probability is that a few SATA ports may be disabled in the event that they’re set to IDE mode.


    • Jul 27, 2012
  • #4
  • Joe Lunchpail

    • Jan 22, 2018
  • #5
  • SNGX1275

    Posts: 10,605 +464
    • Mar 10, 2018
  • #6
  • Apologies for bumping this as soon as extra after a month and a half, nonetheless hey its not as unhealthy as bumping it after 5.5 years.
    Joe Lunchpail – I have no idea your background or age and it is dangerous to make assumptions, so my apologies if I’m fully unsuitable proper right here. Nonetheless there motive there could also be a lot “gobbley-gook” is as a results of IDE stuff is difficult to people that didn’t “develop up” with it. Really the ONLY sure fire method to make IDE work even on IDE solely boards (pre SATA) was to energy Master and Slave jumpers appropriately. There appeared to be quite a few strategies boards dealt with Cable Select (CS) and incorrectly jumpered drives. So as a end result you get people who publish what labored for them, nonetheless the problem with that is whereas it in all chance did work for them, they sometimes didn’t give any particulars on what the exact {{hardware}}/chipsets had been that that they had been working. So positive, there was a lot of confusion and a lot of people didn’t want to screw with jumpers so points had been troublesome – the one doable method was to jumper appropriately and skip cable select all collectively. What further tough points was whenever you hit ATA-66 you needed 80 wire cables vs 40, these ribbons had been fragile and simple to get connection points in them in the occasion that they acquired bent an extreme quantity of. So that added one different complication in troubleshooting points.

    The tl;dr of that’s: glad to procure it sorted – nonetheless merely because you figured it out quickly doesn’t mean all the stuff you be taught is any fully totally different than what you merely posted.

    Disclaimer: it has been practically 20 years since I knew this stuff and I didn’t know them extraordinarily clearly then, the computing world and regular had been nonetheless very raw once more then, so what I said above won’t be 100% acceptable.

    In case you’re deploying House home windows to a computer that has a variety of hard drives, you will have the ability to affirm that the image is utilized to a specific hard drive by using hardware-specific identifiers corresponding to the scenario path or the {{hardware}} interrupt value.

    The scenario path is a string that specifies the bodily location that each drive is expounded to the computer, for occasion: PCIROOT(0)#PCI(0100)#ATA(C00T00L00) . When manufacturing a computer, use a fixed bodily location when connecting your drives, and then use the scenario path string to set up each hard drive.

    For BIOS-based laptop methods or a computer that is working Digital Disk Service (VDS), it is best to use the SELECT DISK=SYSTEM and SELECT DISK=NEXT directions to select the acceptable hard drive.

    Determining a drive location path

    Use the DiskPart directions: document disk and select disk (Occasion: select disk 1) to navigate between the drives in your computer.

    To point the scenario path of a chosen drive, use the DiskPart command aspect disk .

    Throughout the following occasion, the scenario path of the chosen drive is PCIROOT(0)#PCI(0100)#ATA(C00T00L00).

    Deciding on Drives

    Deciding on the system drive

    BIOS-based laptop methods: Use the command SELECT DISK=SYSTEM to select the default system drive.

    This command selects the drive that has an interrupt 13h value of 80h. If the price 80h is assigned to a USB flash drive, this command selects a hard drive that has a value of 81h.

    UEFI-based laptop methods: To select a drive, use the DiskPart command SELECT DISK= .

    Do not use the SELECT DISK=SYSTEM command or the GetSystemDiskNTPath API on Unified Extensible Firmware Interface (UEFI)-based laptop methods to select the system drive. The SELECT DISK=SYSTEM command and the GetSystemDiskNTPath API set up the drive that the working system was booted from as a result of the system drive. Should you occur to boot from WindowsВ® PE, this command selects the House home windows PE drive as a result of the system drive. Should you occur to boot from a system that has a variety of drives that embody an EFI system partition (ESP), this command may select the unsuitable drive.

    Deciding on a non-system drive

    Select the drive by location path. To select a drive, use the DiskPart command SELECT DISK= , the place is the scenario path of your drive. This command helps specify a drive by location.

    Select the drive by using the “NEXT” drive. Use the DiskPart command SELECT DISK=NEXT. This command helps specify any remaining hard drives, irrespective of location. To select further drives, repeat the SELECT DISK=NEXT command to select each drive in order. If there are not any further drives to select, DiskPart returns an error.

    The computer maintains the context for the SELECT DISK=NEXT command as long as DiskPart continues working. If DISKPART exits, the computer loses this context.

    Occasion (Two UEFI/GPT drives):

    Determining the system drive after a reboot

    After you reboot, drive lettering may change. You must make the most of the subsequent occasion script to select the system drive and then reassign letters to the ESP, restoration, and House home windows partitions.

    Formatting non-system drives

    This occasion script selects the system drive and then skips earlier the drive with out modifying the contents of the drive. The script then selects two non-system drives and creates a single, formatted, empty partition on each drive. The partitions do not get hold of a image, so it is not necessary to significantly set up them.

    Hard drives are the a part of your computer that outlets your data in addition to what your working system is put in on. Should you occur to didn’t use a hard drive you would not have the chance to run your computer till you shortly booted it up from one factor like a CD or USB flash drive.

    In order for a hard drive to be acknowledged by an working system corresponding to House home windows, the computer desires to know that it exists, is expounded accurately, what measurement it is and so on. For IDE devices corresponding to hard drives and CDROMs you need to be sure that the jumpers are set appropriately or else the computer won’t acknowledge the drive and you’ll not have the chance to use it in your system.

    Although IDE hard drives are starting to get changed by SATA drives which provide sooner data change prices there are nonetheless many laptop methods available on the market that use IDE drives. Should you occur to ever have ever had to change an IDE hard drive or CD/DVD drive for that matter you will have noticed that there are jumper settings which have to be set to make the computer acknowledge the drive appropriately. A standard IDE cable can have two connectors on it for the two IDE devices. Some cables may solely embody one though. The slave drive would not rely upon the master drive for its operation or vice versa. It’s merely used so the computer is conscious of which drive to ship data to.

    Most laptop methods embody two IDE controller ports on the motherboard that may assist two drives each for a full of 4 drives in the computer. The one time you really need to concern about which drive is master and which is slave is when you end up organising your working system drive on the primary IDE controller port. It’s best to set the OS drive as master and be a part of it to the primary IDE port so it boots the computer appropriately.

    When connecting a couple of hard drive or totally different IDE machine to a computer on the an identical IDE controller, you’ve got to assign one as the primary or master and one as a result of the secondary or slave using jumpers.

    How to configure master and slave in bios for two hard disk drives in a single system

    The place of the jumpers will vary on the hard drive. The drive ought to have a diagram on the once more or prime of the drive indicating what place to put the jumpers for what setting.

    Cable Select (CS) settings had been designed to make it less complicated to be a part of hard drives by making it the place you didn’t have concern in regards to the Master or Slave jumper settings. You merely set the jumper to Cable Select on every drives and counting on the place you associated them to the cable the computer would know which is Master and which is Slave. In case you’re going to use Cable Select you need a specific 40 conductor IDE cable which will determine master and slave connections. Most IDE cables you buy at current wants to be of this sort.

    Should you occur to set every drives on the an identical cable to master or slave then the computer most actually won’t acknowledge the drives in the BIOS and due to this reality you’ll not have the chance to boot the computer with the drive or arrange your working system on it. So always take a look at your settings when placing in a new drive. In case you’re altering an current drive merely set the jumper to match the setting on the outdated drive.


    Constructed-in Drive Digital hard drives use master and slave settings to help the computer inform the two devices apart when associated to the an identical cable. The IDE interface kind connects peripheral devices corresponding to hard drives and optical drives to a computer; moreover referred to as “Parallel ATA” drives, the IDE regular is the additional modern Serial ATA machine connection regular’s predecessor.

    Uncover this textual content

    • Two Devices on One Cable
    • Deciding on Gadget Channels
    • Setting Up the Drives
    • Drive Administration Best Practices

    1 Two Devices on One Cable

    Master and slave designations are associated when two devices share the an identical cable for manually selecting which drive will get which designation. Whereas the names counsel the master drive has priority over the slave drive, the one distinction between the two is the title. Master and slave refer to “channel 0” and “channel 1” respectively. In accordance to Apple, neither the master or slave drive has any specific standing or purposeful distinction over the alternative. Master and slave designations have no bearing on boot priority. The devices will work in any configuration as long as there’s not two master drives or two slave drives. In accordance to Seagate, if every drives are configured using the “cable select” setting in its place of the master and slave settings, the computer BIOS assigns the master and slave settings primarily based totally on which cable plug is expounded to which machine.

    2 Deciding on Gadget Channels

    A computer determines if a hard drive is the master or slave counting on the place of the pin jumper subsequent to the cable connection on the drive. Hard drives usually embody some type of diagram on the machine as to which pins designate which configuration. When configuring two drives, set the jumper to match the master place from the diagram for one in every of many drives and set the second drive’s jumper to match its slave place from its diagram. The jumper positions vary from machine to machine and wants to be thought-about neutral for the hard drive. Jumpers could also be eradicated and re-positioned by hand or with tweezers.

    Three Setting Up the Drives

    The computer case must be opened to configure the hard drives; solely work inside a computer with the ability off and after donning a static-resistant wrist strap or a minimal of touching metallic to discharge any static in your physique.

    The hard drive jumpers could also be troublesome to work with if the hard drives are already put in in the computer’s case, so take away the hard drives from the case if necessary. The configuration order is: set the jumpers, arrange the hard drives in the bay, be a part of the IDE cable to the motherboard and be a part of the IDE cable to the hard drives.

    4 Drive Administration Best Practices

    IDE hard drive administration best practices embody connecting as few devices to a cable as attainable and using the master setting for devices with a devoted cable.
    A single hard drive on a devoted cable will work exactly the an identical if its set as slave or master; nonetheless, setting the drive to master avoids having to change the settings when together with a secondary slave drive later. Master and slave settings are useful for older strategies that don’t assist cable select settings or when only one machine helps cable select.


    • 1 PC Journal Encyclopedia: Definition of: IDE
    • 2 PC Journal Encyclopedia: Definition of: PATA
    • Three Apple Assist: Archived – Power Macintosh G3 and G4: IDE Master and Slave Assist and Configuration
    • 4 Seagate: Jumper Settings for Seagate and Maxtor ATA Hard Drives
    • 5 PCWorld Paperwork: Placing in IDE Hard Drives
    • 6 WD: SATA and EIDE Hard Drives
    • 7 Computer Hope Jargon: Placing in a PC IDE/EIDE Hard Drive
    • eight Computer Hope Jargon: Master

    With regard to the Creator

    Dan Stone started writing professionally in 2006, specializing in coaching, know-how and music. He is a web developer for a communications agency and beforehand labored in television. Stone obtained a Bachelor of Arts in journalism and a Master of Arts in communication analysis from Northern Illinois Faculty.

    Observe: That’s a legacy net web page. The information equipped on this net web page is old-fashioned as a results of SATA has modified PATA as the same old for hard drives. It is being retained solely for historic causes.

    Master Drives and Slave Drives

    One in all many further difficult parts of EIDE hard drive configuration for these new to computer setting up is the master/slave relationship. It’s actually not very hard to understand, nonetheless.

    Traditionally, most motherboards had two EIDE interfaces (most important and secondary). Each interface would possibly assist two devices, making a full of up to 4 drives. Newer motherboards may have only one EIDE interface, or none in any respect, as SATA has develop into the model new drive regular. Should you occur to plan to use EIDE (PATA) drives, make certain to buy a motherboard that helps PATA. (You too can buy an add-in PATA controller.)

    How to configure master and slave in bios for two hard disk drives in a single system

    The primary EIDE connection will most likely be labeled on the motherboard as each IDE-Zero or IDE-1, counting on the mood of the one which made up the stencil. Within the occasion that they chose to use IDE-0 and IDE-1 for the two channels, then the primary is IDE-0. However once they’re labeled IDE-1 and IDE-2, then IDE-1 is the primary.

    They might even be labeled as EIDE or ATAPI, comparatively than IDE, on some boards. All of it means the an identical issue.

    As a results of modern IDE controllers are built-in into the drives, not mounted on the motherboard, the drives have to resolve for themselves how to share the an identical IDE interface.

    To carry out this, one drive on each interface is assigned as a result of the “master,” and the alternative drive (if present) is assigned as a result of the “slave.” The controller on the master drive moreover controls data change in and out of the slave drive.

    When the master drive is idle, the slave drive may change data. However when the master drive is talking with the computer, then it instructs the slave drive to wait. For wise features, due to this two drives that steadily write to each other should not be in a master / slave relatiohship on the an identical EIDE channel. Put them on fully totally different channels in its place.

    How to configure master and slave in bios for two hard disk drives in a single system

    By convention, the master drive is attached to the connector on the IDE cable that is farthest from the motherboard (that is, the one on the very end of the cable) and closest to the off-center heart connector.

    On an 80-conductor EIDE cable, the connectors are moreover color-coded: The master will get associated to the black connector, the slave to the gray, and the blue to the motherboard.

    Using Cable Select

    Many drives moreover provide a “cable select” (CS) risk. When using cable select, each drive is jumpered (further about this on the next net web page) to the “CS” setting. A specific signal is distributed to pin 28 of the drive connected to the master drive connector, which instructs that drive to develop into the master drive and to assume the duties of controlling data change on that EIDE channel. Conversely, as a results of this signal is absent on the drive associated to the slave connector, that drive assumes the slave mode. Pretty good, huh?

    I like to recommend you make the most of the CS setting on all PATA drives. Why? As a results of it saves you the annoyance of getting to take away current drives to have a have a look at the little label and see how to reset the jumpers do you have to change the drive challenge or add a drive afterward. They don’t seem to be all of the an identical.

    Deciding on ATA Hard Drive Positions

    By widespread convention, when using IDE drives, the first partition on the master drive on the primary IDE channel incorporates the working system and generally known as the system drive. This is not an absolute necessity, nevertheless it certainly’s the easiest way points are sometimes accomplished.

    When using SATA drives, the working system is often put in on the first partition of the drive connected to the primary SATA controller. As quickly as as soon as extra, this is not an absolute requirement, nevertheless it certainly’s the way in which it is sometimes accomplished.

    Other than the system drive (which wants to be assigned as acknowledged above), you’ve got some flexibility in assigning the rest of the IDE devices. When making these picks, a very highly effective issue to hold in thoughts is that the master and slave drives on the an identical IDE channel cannot every change data on the same time.

    What this suggests in wise phrases is that data change between a master and and a slave drives on the an identical IDE channel will most likely be slower then data change between drives on fully totally different IDE channels, as a results of solely one in every of many two drives is allowed to discuss at any given time. Due to this reality, it is best to try to stay away from placing two drives on the an identical IDE channel if a sort of drives will steadily be used to change data to the alternative.

    In case you’re a musician, for occasion, and you steadily copy your tracks from an IDE hard drive to your CD-RW drive, then try not to slave the CD-RW to the hard drive. Equally, do you have to steadily copy CD’s from a CD-ROM drive to a CD-RW drive, then try not to place these two drives on the an identical IDE channel.

    Lastly, keep in mind that a few IDE {{hardware}} devices ought to be set as masters (and a solely a few others ought to be set as slaves) in order to work. Study the drive’s documentation to uncover out if any of the devices you’ve gotten chosen for your homebuilt computer fall into this class.

    (And, in any case, in case you’re using all SATA drives, then none of these items applies to you in any respect.)


    My Motherboard’s major Hard Disk is SATA.. i wanted to be a part of an IDE hard disk to it.. how do i set it up?

    ought to i configure bios too or ought to i merely set it in AUTO

    thanks for the help in advance..


    Master and Slave are solely related to the controller you may be connecting the ribbon cable to. It will not impact the motherboard.
    So say for event you had two IDE plugs and Four PATA harddrives. You’ll conned two to each connection correct? Certain, and in each you will have one Master and one Slave. SATA doesnt need to know how the alternative controllers do their issue. So:

    PATA Controller > Master > Slave (1st and 2nd)
    PATA Controller > Master > Slave (third and 4th)
    PATA Controller > Master (fifth hdd) / or Slave (wouldn’t matter as Gulo notes)
    SATA Controller > SATA drive (sixth)
    SATA Controller > SATA drive (seventh)

    Gulo Luseus


    It’s straightforward to be a part of a PATA drive, the problems come when trying to inform your mobo which drive you want to boot from, SATA or PATA

    As Gulo mentionied, I consider it’s most likely your DVD and/or CD drives will most likely be PATA. Go into the BIOS and see whether or not or not it’s a master or a slave (most actually a master), whichever one it is you want your HDD to be the choice.

    To range this there could also be a little jumper someplace on the HDD to change the setting. Have a look for this.

    Clients Who Are Viewing This Thread (Clients: 0, Firm: 1)

    How to configure master and slave in bios for two hard disk drives in a single system

    Welcome to Tech Assist Man!

    Are you making an attempt for the reply to your computer downside? Be a a part of our web site at current to ask your question. This web site is completely free — paid for by advertisers and donations.

    Should you occur to’re not already accustomed to boards, watch our Welcome Data to get started.

    Be a a part of over 807,865 totally different people an identical to you!

    I simply currently upgraded drives. I had a 15.3Gig c: (master) and a 1.2Gig d: (slave). I upgraded the slave (which I solely use to retailer my junk) to a 6.0Gig. Now when working a Norton system take a look at it gives me this message:

    Hard Drive Integrity Scan
    ! Drive D: won’t be configured appropriately. Hard Drive Integrity Scan cannot run on this drive. Please search the recommendation of the ReadMe.TXT file for further information on this downside. OK

    I’m unable to uncover that ReadMe.TXT, or comparatively the becoming one. Can anyone inform me merely the place to go to configure the drive appropriately, or is it not really easy? I do know my method spherical my machine, nonetheless I’m no educated.


    Jumpers are set appropriately. No, I not at all touched the BIOS. Solely merely switched the drives. Was that unhealthy? Oops.

    So how do I restore it now with out screwing one factor up?

    Chris A

    Does the drive work?

    Is it solely offering you with points should you run Norton system take a look at.

    If that is the case and the drive is working high-quality. I might uninstall Norton then reinstall it. It’d nonetheless be making an attempt for the outdated drive.

    [This message has been edited by Chris A (edited 05-30-2000).]


    To answer all questions:
    Certain, the hard drive works OK.
    Certain, the machine sees all 6 GB.

    In My Computer, system information, drive tab, it displays every drives with the suitable data. However, on the system tab in the Hard Disks half it reads: 14.32GB, 203MB, 94.0MB (My c:, my very outdated d:, and ZIP).

    Throughout the machine supervisor, beneath disk drives there could also be my floppy, my ZIP and two listings for “GENERIC IDE DISK TYPE 46”, every of which current that they are functioning often. Beneath Hard Disk Controllers, there are Three listings:
    intel 82371AB/EB PCI Bus Master IDE Controller
    Important IDE Controller (twin fifo)
    Secondary IDE Controller (twin fifo)

    So. having said all that, ought to I alter the BIOS or re-install Norton? I can take care of Norton. If I would love to change the BIOS: I can get there, nonetheless what do I do exactly as soon as I am in the BIOS?

    Thanks a lot, guys, for your help and endurance. It’s a lot appreciated!


    Successfully, I might take a look at BIOS first. At boot, you usually press DEL or F1 to eneter setup. Then merely search around for hard drive settings and see what’s listed. In the event that they’re confirmed appropriately, merely exit with out saving. This makes no changes so can’t injury one thing. Should you occur to get in there and see that the drives are NOT acceptable, write down what they’re set to (in case points worsen) and look for the AutoDetect risk. Use it to get the suitable settings.

    Get free stuff and help out a poor computer tech
    5/20 new, limitless, pay to surf web site added
    5/21 added interactive story web site – it’s pleasant!


    This was posted in a duplicate which has been closed.

    quote: BACKGROUND:
    That’s a second posting, comparatively, a clarification, of this question. (Please look further down on the document for the distinctive posting – tons further data there). I’ve two drives that are every upgrades to my outdated prepare. Get out a pencil & paper. I initially had solely a 200MB c:. I put in a 1.3GB c: and moved the 200MB to the d: as a result of the slave. Then I bought a 15GB drive. I eradicated the 200MB d:, moved the 1.3GB c: to d: and put in the 15GB to c:. Then I acquired a 6GB drive. I eradicated the 1.3GB d: and put in the 6GB as a d:. Confused? Me too! I now have the 15GB c: (master) and the 6GB d: (slave). All jumpers are set appropriately.
    In some areas, my machine would not see the current drives. I not at all switched one thing in the BIOS. I’ve entry to full functionality of every drives. Norton Utils says my d: drive is not configured accurately and due to this reality cannot scan it. Throughout the DOS textual content material all through start up I nonetheless see the outdated drives flash by. I consider the BIOS has the unsuitable data too.

    How do I configure the drives appropriately in order that the information is consistant thoughout the machine?

    Any and all help is appreciated!!