Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
Martin Leese <please@see.Web.for.e-mail.INVALID> writes:
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
I found the manual on line, and couldn't find the settings with AC -- it
does have Slave with CLJ and Master with CLJ, however -- these are used
to tell the computer that the drive has fewer cylinders than it really
does, for *really* antique machines whose BIOS can't deal with a disk
this big. What I found is for the US market; if you're not in the US
could it be renamed for different markets?
If it were me, I'd set it to Cable Select, no CLJ.
Joe Pfeiffer <pfeiffer@cs.nmsu.edu> wrote:
Martin Leese <please@see.Web.for.e-mail.INVALID> writes:
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
I found the manual on line, and couldn't find the settings with AC -- it
does have Slave with CLJ and Master with CLJ, however -- these are used
to tell the computer that the drive has fewer cylinders than it really
does, for *really* antique machines whose BIOS can't deal with a disk
this big. What I found is for the US market; if you're not in the US
could it be renamed for different markets?
If it were me, I'd set it to Cable Select, no CLJ.
Assuming you get the correct IDE connector (I think it was the one in
the middle) on the drive to make it a slave. If you're using a
one-connector cable, set the drive as Slave (since you don't want to
boot from it).
Joe Pfeiffer <pfeiffer@cs.nmsu.edu> wrote:
Martin Leese <please@see.Web.for.e-mail.INVALID> writes:
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
I found the manual on line, and couldn't find the settings with AC -- it
does have Slave with CLJ and Master with CLJ, however -- these are used
to tell the computer that the drive has fewer cylinders than it really
does, for *really* antique machines whose BIOS can't deal with a disk
this big. What I found is for the US market; if you're not in the US
could it be renamed for different markets?
If it were me, I'd set it to Cable Select, no CLJ.
Assuming you get the correct IDE connector (I think it was the one in
the middle) on the drive to make it a slave. If you're using a
one-connector cable, set the drive as Slave (since you don't want to
boot from it).
VanguardLH <V@nguard.LH> writes:
Joe Pfeiffer <pfeiffer@cs.nmsu.edu> wrote:
Martin Leese <please@see.Web.for.e-mail.INVALID> writes:
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
I found the manual on line, and couldn't find the settings with AC -- it >>> does have Slave with CLJ and Master with CLJ, however -- these are used
to tell the computer that the drive has fewer cylinders than it really
does, for *really* antique machines whose BIOS can't deal with a disk
this big. What I found is for the US market; if you're not in the US
could it be renamed for different markets?
If it were me, I'd set it to Cable Select, no CLJ.
Assuming you get the correct IDE connector (I think it was the one in
the middle) on the drive to make it a slave. If you're using a
one-connector cable, set the drive as Slave (since you don't want to
boot from it).
You're right, of course. I assumed from the fact he wanted to make it a >Slave that he had two; were there ever cables that didn't have the
reversed wires to indicate Master/Slave?
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".)Â What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
On 4/25/2020 6:15 PM, Martin Leese wrote:
Hi,
I am transferring an old hard disk (20 Gbyte
Maxtor D740X) from an old PC to a newer one
(Dell Dimension 3000). On the old machine
the disk was the boot drive, and so was
configured as the Master device. On the newer
machine it will be a Slave device.
I have the "Jumper, CHS, and Install Guide"
for the drive, but there are two Slave
jumper settings. These are called "Slave"
and "Slave with AC", but nowhere does the
document explain was "AC" actually is.
(There is also "Master with AC" and "Cable
Select with AC".) What is "AC"?
I can't Google at the moment because my old
PC does not have the required encryption
protocols. This is why I am trying to
upgrade.
I guess so far there's been no explanation of what the "AC" means yet.
My guess is that it probably stands for "Address Control" or something, which might be a way of getting an older BIOS to understand a newer
drive. I think around this time most drives used the older CHS
(Cylinder, Head, Sector) formatting system, and to get bigger the new generation had to switch to the newer LBA (Logical Block Address)
system. Address Control might indicate to the BIOS whether to use the
CHS system or the LBA system. Later generation BIOSes could figure this stuff out on their own.
Yousuf Khan<bbbl67@spammenot.yahoo.com> wrote:
I guess so far there's been no explanation of what the "AC" means yet.Even for BIOSes that supported LBA, they were and still are limited to
My guess is that it probably stands for "Address Control" or something,
which might be a way of getting an older BIOS to understand a newer
drive. I think around this time most drives used the older CHS
(Cylinder, Head, Sector) formatting system, and to get bigger the new
generation had to switch to the newer LBA (Logical Block Address)
system. Address Control might indicate to the BIOS whether to use the
CHS system or the LBA system. Later generation BIOSes could figure this
stuff out on their own.
the number of addressing bits. At one time, 22 bits was thought
sufficient for IDE/ATA drives. Then 28 bits. Now it's up to 48 bits.
If that isn't enough for the partition size, up the entity size
(sectors). Hard disks have implemented LBA (Int13 extensions) since
1996 rather than rely on a CHS translation scheme in the BIOS.
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