Usinage Manuel Électromécanique des Systèmes Automatisées-ESA-OFPPT-PDF

Usinage Manuel Électromécanique des Systèmes Automatisées-ESA-OFPPT-PDF

Usinage Manuel Électromécanique des Systèmes Automatisées-ESA-OFPPT-PDF

Usinage Manuel   ESA-OFPPT-PDF

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Adjusting BIOS settings


To be able to modify the BIOS parameters, you must first enter the configuration program child. To do this, you must access it by pressing one or more contacts when the computer starts. You will therefore start the computer and scan among the displayed messages for something like "Press <del> to enter SETUP". Note that the message can be formulated differently (and sometimes in French!), And that the contact (s) to be pressed can vary (F1, F2, DEL, CTRL + Del…).


Before starting to detail the parameters of the BIOS it should be known that according to the BIOS manufacturers the alternatives proposed can vary. Likewise, motherboard manufacturers, who buy BIOS licenses, can connect them according to the circumstance:


· Motherboard chipset;


· Microprocessor model and brand (AMD, CYRIX, INTEL, K6, PII, MMX ...)


· Additional integrated chipset functionalities: SCSI, child, network ...


We cannot therefore detail all the alternatives of all the BIOS according to all possible and imaginable motherboards! We will therefore stick to the parameters and advancements in addition to current.


To enter the Setup which will serve as an example, press the "Del" key when prompted.


Elements of the Setup


Standard Setup


Date / Time Select this choice to change the date


or the time.


Unless you have a very old hard disk, choose TYPE 47 (however it is sometimes type 0 or USER depending on the BIOS ...) which allows you to enter custom parameters for the hard disk. Since the fight of the EIDE interface, the BIOS have the possibility to configure up to 4 EIDE hard disks or CD-ROM drives (in this case the type of hard disk will not be 47 but CD-ROM or ATAPI). Once the type of hard drive defined, you will have to enter the geometry parameters of it that you should find on a label stuck on it (or in its documentation):


§ Cyl: number of cylinders on the hard drive.


§ Head: number of heads.


§ Sect: number of sectors of the hard disk. Consideration obligatorily 17 for collectible hard disks MFM (Modified Frequency Modulated) and 26 for disks RLL (Run Length Limited).


The following hard drive parameters do not appear in all BIOSs:


§ WPcom: (Write Precompensation) is not used in addition to the current hard disks: leave what the standard BIOS defaults to offer (0 or 65535) unless your hard disk is very old.


§ LZone: (landing zone) is the zone for parking the address / write heads of the hard disk if the latter does not do so automatically when the machine is switched off. The value used here is either the maximum number of cylinders or 0.


§ LBA Mode: allows the BIOS to support hard disks larger than 540 MB.


§ Multi-division Transfers: sector transfer mode, a high value can improve the transfer speed. An analyzer in the standard case following the hard drives.


§ Transfer Mode: Data transfer mode, in addition to this value is high in addition to the transfers will be fast. If your PC does not start in addition to or you cannot start up your operating system, decrease this value. Value to decrease also in case of hard drive crash during overclocking.


§ Ultra DMA: if your hard drive and your controller allow it, activating this choice will improve transfers between the hard drive and the PC.


Consideration, many recent BIOSes avoid the tedious declaration of the parameters of the hard disk by systematically auto-detecting it at startup or by having a choice Auto-Detect Hard Disks.


Declaration of the new IDE hard drive to the computer


You will now declare the hard drive in the BIOS of the computer so that it, and your operating system, recognize it.


To do this, you must enter the BIOS setup program. To declare the hard drive to the BIOS, you will have to go to the part reserved for disk setup. The ideal is to have the documentation of your BIOS under the eyes vehicle BIOS screens vary depending on the publishers who create them and some manufacturers who have licenses to modify them. Basically avoid going to the "Progressed", "Chipset", "Attachment and play", "PCI setup" menus, but go to a "general" or "hard-drive" menu (disc hard).


Once you have found the hard disks setup menu, you will discover that there is a list of lines reserved for configuring disks. Each of them is reserved for a hard disk and contains different input fields to be filled with the parameters of the disk. But first you have to find out which line compares the disc you are interested in. Based on the jib following uses:


The master hard drive of the chief IDE controller (which will bear the letter C in DOS) is designated by the lowest number in the BIOS (generally "drive 0") and which happens to be the head of the list.


The slave hard drive of the chief IDE controller (which will bear the letter D) appears in the BIOS with a number higher than the previous drive (drive 1 in general).


The master hard drive of the second controller has a higher standard number affinity to the previous one (drive 2).


Finally, the slave hard drive of the second controller also has a higher number (drive 3).


Note that this numbering is also valid for CD-ROM drives and CDR (and CD-RW) writers. So, if you have a master hard drive on the IDE head controller and a master CD-ROM drive on the second IDE controller these will typically be designated as standard BIOS standard drive 0 (hard drive) and drive 2 (CD-ROM). You will not have to fill in the other intermediate fields if you have nothing connected to the corresponding connectors.


Once you have found the parameter line for the new hard drive, you must enter the input fields. Take a sheet of paper and note all the alternatives that are on this screen (settings of all hard drives) vehicle if you make a mistake you can return to it. If you have a printer you can also make a screen copy on paper using the <Print. screen>. BIOS in addition to modern have a choice "Auto-distinguish" or "Auto", for each hard drive, do not hesitate to choose vehicle it will take care of the setting according to the disc. Other BIOSes have a choice that will detect all disks at the record: do not hesitate to use it there too. Standard against absolutely avoid the option "group hard drive" or "low level configuration" vehicle you could lose your data (if you choose a hard drive) or even make the hard drive unusable (these choices are there for old RLL drives and / or MFM which have no compatibility with the IDE).


If you cannot find an alternative to hard drive auto-detection, you will need to enter its parameters that you noted before installing it in the box (or which can be found in the documentation that may have been supplied with you) :


In head enter the type of hard drive. It is generally a number, between 1 and 46, which defines certain standard hard drive "antique" settings: they will not serve you anything because they cannot be modified. Standard against when you go to scroll through this list you could come across the famous choice "auto" which allows to choose auto-detection (use it!). If you do not have this alternative you should come across a type 47 (or "Client" or "0") which will allow you to modify the other settings of the disk line (note that some BIOSes only offer you the choice between AUTO and USER): choose it.


You must then enter the number of cylinders (chamber), heads (heads) and sectors (segments). Enter these, as you noted them, in the corresponding fields.


There can also be an alternative "landing zone" (zone where the address heads can be parked), but which is hardly used any more. If you have noted information on this one, and that the option is offered to you, enter them, otherwise leave the field with the number proposed by default (typically 0 or 65535).


If your hard drive exceeds 540 MB you must activate the LBA option which allows the BIOS to let the operating system know that it is dealing with a disc larger than this size. If you do not find this alternative you must use a utility which remedies this insufficiency of the BIOS and which is generally delivered with the disc (if this is not the case you will have to buy DISK MANAGER from ONTRACK)


You might have an Ultra DMA alternative. If you can change the zone to this value: do so, since your transfers between the computer and the disk buffer will only be faster.


When you have entered all the parameters, you can weakling the BIOS after saving them (often the F10 key performs both operations).



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