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Groups > comp.mobile.android > #33496 > unrolled thread
| Started by | Chris Green <cl@isbd.net> |
|---|---|
| First post | 2016-08-17 23:15 +0100 |
| Last post | 2016-08-22 11:15 -0400 |
| Articles | 4 on this page of 24 — 13 participants |
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Maximum SD card capacity, what happens if you exceed it? Chris Green <cl@isbd.net> - 2016-08-17 23:15 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Ken Blake <Ken@invalid.news.com> - 2016-08-17 15:53 -0700
Re: Maximum SD card capacity, what happens if you exceed it? crankypuss <undisclosedUserid@gmail.com> - 2016-08-18 08:56 -0600
Re: Maximum SD card capacity, what happens if you exceed it? Poutnik <poutnik4nntp@gmail.com> - 2016-08-18 19:01 +0200
Re: Maximum SD card capacity, what happens if you exceed it? AL <noemail@none.com> - 2016-08-17 16:14 -0700
Re: Maximum SD card capacity, what happens if you exceed it? AL <noemail@none.com> - 2016-08-17 16:31 -0700
Re: Maximum SD card capacity, what happens if you exceed it? tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2016-08-17 22:21 -0400
Re: Maximum SD card capacity, what happens if you exceed it? Poutnik <poutnik4nntp@gmail.com> - 2016-08-18 07:38 +0200
Re: Maximum SD card capacity, what happens if you exceed it? Chris <ithinkiam@gmail.com> - 2016-08-18 07:22 +0000
Re: Maximum SD card capacity, what happens if you exceed it? crankypuss <undisclosedUserid@gmail.com> - 2016-08-18 08:55 -0600
Re: Maximum SD card capacity, what happens if you exceed it? Daniel James <daniel@me.invalid> - 2016-08-19 15:20 +0100
Re: Maximum SD card capacity, what happens if you exceed it? musika <mUs1Ka@NOSPAMexcite.com> - 2016-08-19 15:36 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Daniel James <daniel@me.invalid> - 2016-08-20 15:52 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Dave Higton <dave@davehigton.me.uk> - 2016-08-20 19:15 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Daniel James <daniel@me.invalid> - 2016-08-27 17:49 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Dave Higton <dave@davehigton.me.uk> - 2016-08-27 20:40 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Daniel James <daniel@me.invalid> - 2016-08-28 14:54 +0100
Re: Maximum SD card capacity, what happens if you exceed it? AL <noemail@none.com> - 2016-08-19 08:11 -0700
Re: Maximum SD card capacity, what happens if you exceed it? Theo Markettos <theom+news@chiark.greenend.org.uk> - 2016-08-20 23:32 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Chris Green <cl@isbd.net> - 2016-08-21 10:28 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Micky <NONONObobbyburns1111@gmail.com> - 2016-08-20 07:02 -0400
Re: Maximum SD card capacity, what happens if you exceed it? Micky <NONONObobbyburns1111@gmail.com> - 2016-08-20 07:12 -0400
Re: Maximum SD card capacity, what happens if you exceed it? Nigel Wade <nmw@local.domain> - 2016-08-22 09:55 +0100
Re: Maximum SD card capacity, what happens if you exceed it? Micky <NONONObobbyburns1111@gmail.com> - 2016-08-22 11:15 -0400
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| From | Micky <NONONObobbyburns1111@gmail.com> |
|---|---|
| Date | 2016-08-20 07:02 -0400 |
| Message-ID | <s0egrb5k2u8d0lnk0k7uausuntap60avuh@4ax.com> |
| In reply to | #33496 |
On Wed, 17 Aug 2016 23:15:01 +0100, Chris Green <cl@isbd.net> wrote: >Just about all of our Android devices seem to say that the maximum SD >card capacity is 32Gb. Is this a hard limit or is it just that 32Gb >is the maximum size tested? I don't know about phones, but windows XP could only read 32G unless you download and install a little program, while Vista could read 64G and probably higher. If you tried ot read 64G in normal XP**, it only read the first 32G. **I'm not sure what happens if you buy a 64G capable USB adapter and plug that into a USB port on normal XP.
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| From | Micky <NONONObobbyburns1111@gmail.com> |
|---|---|
| Date | 2016-08-20 07:12 -0400 |
| Message-ID | <3degrb9j3s6gfhbmkggvp978sih33f6vf2@4ax.com> |
| In reply to | #33573 |
On Sat, 20 Aug 2016 07:02:18 -0400, Micky <NONONObobbyburns1111@gmail.com> wrote: >On Wed, 17 Aug 2016 23:15:01 +0100, Chris Green <cl@isbd.net> wrote: > >>Just about all of our Android devices seem to say that the maximum SD >>card capacity is 32Gb. Is this a hard limit or is it just that 32Gb >>is the maximum size tested? > >I don't know about phones, but windows XP could only read 32G unless >you download and install a little program, while Vista could read 64G >and probably higher. If you tried ot read 64G in normal XP**, it >only read the first 32G. > >**I'm not sure what happens if you buy a 64G capable USB adapter and >plug that into a USB port on normal XP. Daniel reminds me that the file structure is different for SDXC, and the downloadable program is able to read exFAT. BTW, the downloadable program for XP (and 2000 or 98?) is not found on MS's pages anymore, like it should be, and Paul found it for me in archive.net, or whatever the Wayback machine is called. Anyone who needs it should write me or search the XP newsgroup for the right message, by Paul or quoted by me. I think he found it by searching for the MS page that I had found myself that says it has it for 64-bit, since Paul realized the same page used to have it for 32 and 64 bit. What is wrong with MS anyway? How much business will they loose by no longer offering it for 32-bit?
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| From | Nigel Wade <nmw@local.domain> |
|---|---|
| Date | 2016-08-22 09:55 +0100 |
| Message-ID | <e1vt03Fd1dbU1@mid.individual.net> |
| In reply to | #33573 |
On 20/08/16 12:02, Micky wrote: > On Wed, 17 Aug 2016 23:15:01 +0100, Chris Green <cl@isbd.net> wrote: > >> Just about all of our Android devices seem to say that the maximum SD >> card capacity is 32Gb. Is this a hard limit or is it just that 32Gb >> is the maximum size tested? > > I don't know about phones, but windows XP could only read 32G unless > you download and install a little program, while Vista could read 64G > and probably higher. If you tried ot read 64G in normal XP**, it > only read the first 32G. Windows XP can read/write FAT filesystems in excess of 32GB. Microsoft created an artificial limit of 32GB in the format.exe program so that it would not format a FAT partition beyond 32GB. The reason being that FAT beyond 32GB has to use a large cluster size, and this can potentially waste a lot of disk space (the cluster size is the minimum "quantum" of disk space allocation, a file containing 1 byte of information will occupy 1 cluster). FAT requires a cluster size of 32kB for > 32GB filesystems. Since NTFS only requires a 4kB cluster size for filesystems up to 16TB, it made some sense to impose the limit. However, the implementation left a lot to be desired. For example, Microsoft didn't notify you at the time you attempted to format a partition > 32GB as FAT, only when the format actually reached the 32GB point on the disk and it then throws an error. Very annoying. Using any other format mechanism (format.exe from a previous version of Windows, Linux etc) allows FAT partitions of greater than 32GB to be formatted and accessed on Windows XP. > > **I'm not sure what happens if you buy a 64G capable USB adapter and > plug that into a USB port on normal XP. > I expect it would work perfectly well for read/write, but be unable to format beyond 32GB using the Microsoft supplied format.exe program.
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| From | Micky <NONONObobbyburns1111@gmail.com> |
|---|---|
| Date | 2016-08-22 11:15 -0400 |
| Message-ID | <325mrb5vlc28acjbn2p7jbpaqqqesavsku@4ax.com> |
| In reply to | #33599 |
On Mon, 22 Aug 2016 09:55:30 +0100, Nigel Wade <nmw@local.domain> wrote: >On 20/08/16 12:02, Micky wrote: >> On Wed, 17 Aug 2016 23:15:01 +0100, Chris Green <cl@isbd.net> wrote: >> >>> Just about all of our Android devices seem to say that the maximum SD >>> card capacity is 32Gb. Is this a hard limit or is it just that 32Gb >>> is the maximum size tested? >> >> I don't know about phones, but windows XP could only read 32G unless >> you download and install a little program, while Vista could read 64G >> and probably higher. If you tried ot read 64G in normal XP**, it >> only read the first 32G. > >Windows XP can read/write FAT filesystems in excess of 32GB. >Microsoft created an artificial limit of 32GB in the format.exe program so that it would not format a FAT partition beyond 32GB. The reason being that FAT beyond 32GB has to use a large cluster size, and this can potentially waste a lot of disk space (the cluster size is the minimum "quantum" of disk space allocation, a file containing 1 byte of information will occupy 1 cluster). FAT requires a cluster size of 32kB for > 32GB filesystems. Since NTFS only requires a 4kB cluster size for filesystems up to 16TB, it made some sense to impose the limit. > >However, the implementation left a lot to be desired. For example, Microsoft didn't notify you at the time you attempted to format a partition > 32GB as FAT, only when the format actually reached the 32GB point on the disk and it then throws an error. Very annoying. > >Using any other format mechanism (format.exe from a previous version of Windows, Linux etc) allows FAT partitions of greater than 32GB to be formatted and accessed on Windows XP. Very interesting. Sorry for getting it wrong. Glad you were here. > >> >> **I'm not sure what happens if you buy a 64G capable USB adapter and >> plug that into a USB port on normal XP. >> > >I expect it would work perfectly well for read/write, but be unable to format beyond 32GB using the Microsoft supplied format.exe program. I think you're thinking of non-SD devices, because SD cards that are 64G are all SDXC I think and they are all formatted in exFAT. I brought up the USB adapter because I could choose one that was 64G-capable. I thought that was meeting the problem half-way, and might work, as if the adapter had some built-in software that could read exFAT, when I'll bet it's just a bunch of wires. I have an XP laptop and an adapter and I could take a card out of something to test, and since I've already updated the XP to read 64G, I could rename the file (a .dll?) to test, but it's too much trouble. ;-) Somewhere in the XP newsgroup is a thread that I posted to, maybe started, where iirc it refers to some problem or some non-problem that reminded me to find this and install it. Only been a month or two and I can't remember.
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