MrManuals said:Hi All;
I 'm thinking of buying a 250GB external USB 2.0 drive for backup.
I'm running XP Home, if I buy this drive, how do I get Windoze to
recognize it above the 137mb limit? Or does the 137mb limit only apply
to internal drives?
Grinder said:That's a limit imposed by the controller, so there's no need to worry
about it for a pre-assembled external drive. If you're plopping an
internal drive into an USB enclosure, you might need to be wary of that.
Unfortunately, I don't see any mentions of those limits here:
http://www.newegg.com/app/listProduct.asp?submit=list&catalog=92&DEPA=0&sortby=11&order=0
Also a small aside -- I've seen a 127Gb limit discussed, but not a 137Mb
one. (137Mb still beats my first hard drive though!)
VWWall said:They are both the same thing. The capacity limit results from a 28 bit
BIOS, (or controller), being able to access only 2^28 sectors of the
disk. 2^28 = 268435456 times 512 bytes/sector = ~137 Gb using 1 Mb =
1000. Using 1 Mb =2040 this is exactly 128 Gb. The disk makers use the
larger figure.
They are both the same thing. The capacity limit results from a 28 bit
BIOS, (or controller), being able to access only 2^28 sectors of the
disk. 2^28 = 268435456 times 512 bytes/sector = ~137 Gb using 1 Mb =
1000. Using 1 Mb =2040 this is exactly 128 Gb. The disk makers use the
larger figure.
Virg Wall
Yes, I did mean 137GBI think the guy was making a joke in reference to the original poster's typo
(137 MB is what he typed but I'm sure he meant 137 GB).
I have an existing USB enclosure, it has an IDE connection on the
inside. What I need to know is can I use say a 160GB drive here
without problems, or am I going to be limited to the 137Gb limit if I
use it this way?
MrManuals wrote:
[snip]
I have an existing USB enclosure, it has an IDE connection on the
inside. What I need to know is can I use say a 160GB drive here
without problems, or am I going to be limited to the 137Gb limit if I
use it this way?
What is the manufacturer and model number of the enclosure? I would
guess that they've been farsighted enough to provide plenty of
addressing, but I would rather find some explicit specs.
MrManuals said:MrManuals wrote:
[snip]
I have an existing USB enclosure, it has an IDE connection on the
inside. What I need to know is can I use say a 160GB drive here
without problems, or am I going to be limited to the 137Gb limit if I
use it this way?
What is the manufacturer and model number of the enclosure? I would
guess that they've been farsighted enough to provide plenty of
addressing, but I would rather find some explicit specs.
My enclosure really doesn't have any markings on it except for ' High
Speed Alloy Enclosure' Bought it on eBay. I used it before with an
80gb drive, but I had an internal drive failure and I had to use the
back up drive as a replacement for it.
It works fine I have a 160 and it is recognized.
Ron
Rich said:I have 2 x 250 Gb USB2 [external drives] connected to my main system. When
formatted they only come out as 230'ish (down to the FAT table) but
windows XP home works perfectly.
Ok, so what if I were to install an internal drive over 137gb into
this enclosure. Would I be able to get this to work with XP home?
You see, I already have an enclosure that I'd like to use. It has
connections for an IDE drive on the inside, but it connects to a USB
2.0 cable on the outside of the case.
Hi All;
I 'm thinking of buying a 250GB external USB 2.0 drive for backup.
I'm running XP Home, if I buy this drive, how do I get Windoze to
recognize it above the 137mb limit? Or does the 137mb limit only apply
to internal drives?
TIA.
Paul
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