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[Q] Formatting Fat32 64gb microSDHC card to exFAT Inquiry

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Biker1
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Default [Q] Formatting Fat32 64gb microSDHC card to exFAT Inquiry

I have a SanDisk 64gb card which is formatted Fat32.
I've been running it without issue for a few months.
45gb is being used.

I wanted to transfer the files to my pc, and have a few questions/comments:
- after transferring my files I want to format to exFAT
- will my files that were on my Fat32 card be able to be transferred to my exFAT card, as there are a couple of Nandroid, ROM downloads, pics, etc. that I want to transfer back.
- after transferring files to my pc, I was going to place the card back into my S4 and format card from the device. From what I've read, the device will format the card to exFAT. Would this be correct?

There are a couple of reasons I'd like to format the card:
- I want to transfer files to pc, and have some more space on the card, and figured I'd format to exFAT so as not to have file size limitations, although I've yet to dl any 4gb files.
- I'm taking a preemptive strike to avoid possible card issues which may arise in the future. I thought transferring many of the 45gb of files on the card, and re-formatting the card may assist with this, or is this not necessarily true?
If formatting the card and emptying files doesn't reduce the possibility of borking the card in the future, I want to transfer files anyway, in addition to having the card in exFAT unless there is a downside to this format.

Tia......
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blackknightavalon
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I recommend keeping it at Fat32. The phone won't read ExFat.

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baseballfanz
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Quote:
Originally Posted by Biker1 View Post
I have a SanDisk 64gb card which is formatted Fat32.
I've been running it without issue for a few months.
45gb is being used.

I wanted to transfer the files to my pc, and have a few questions/comments:
- after transferring my files I want to format to exFAT
- will my files that were on my Fat32 card be able to be transferred to my exFAT card, as there are a couple of Nandroid, ROM downloads, pics, etc. that I want to transfer back.
- after transferring files to my pc, I was going to place the card back into my S4 and format card from the device. From what I've read, the device will format the card to exFAT. Would this be correct?

There are a couple of reasons I'd like to format the card:
- I want to transfer files to pc, and have some more space on the card, and figured I'd format to exFAT so as not to have file size limitations, although I've yet to dl any 4gb files.
- I'm taking a preemptive strike to avoid possible card issues which may arise in the future. I thought transferring many of the 45gb of files on the card, and re-formatting the card may assist with this, or is this not necessarily true?
If formatting the card and emptying files doesn't reduce the possibility of borking the card in the future, I want to transfer files anyway, in addition to having the card in exFAT unless there is a downside to this format.

Tia......
Shouldn't be a problems with what you're wanting to do.
-Copy sd card contents to PC
-Reformat and copy content back
-Make sure the recovery you're using can read exFAT (both TWRP and Philz CWM can read exFAT)
-Also be sure the kernel support exFAT or your phone might not boot up.
-There's pros and cons to each format but for regular user like myself it's not something I really worry about

Quote:
Originally Posted by blackknightavalon View Post
I recommend keeping it at Fat32. The phone won't read ExFat.

Sent from Spaceball One.
The phone out of the box should read exFAT. It's when using different kernels that does not support exFAT it will not read.
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Biker1
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(Last edited by Biker1; 31st August 2013 at 05:51 PM.)
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Originally Posted by baseballfanz View Post
Should be a problems with what you're wanting to do.
-Copy sd card contents to PC
-Reformat and copy content back
-Make sure the recovery you're using can read exFAT (both TWRP and Philz CWM can read exFAT)
-Also be sure the kernel support exFAT or your phone might not boot up.
-There's pros and cons to each format but for regular user like myself it's not something I really worry about



The phone out of the box should read exFAT. It's when using different kernels that does not support exFAT it will not read.
Last night, I:
- copied 45gb data from card to pc - 50 minutes
- I've read about the kernels and the format to be used
- decided to keep card @ Fat32 : "If it Ain't Broke, Don't Fix It" applies here
- I haven't deleted files yet, or formatted

I formatted the card once before using my pc and www.easeus.com
I found this also:
http://forum.xda-developers.com/show...1773735&page=2

But most likely will use the easeus method, which is also in that thread.
I'll take another look, but does formatting the card using the S4 format to exFAT or Fat32?
I thought it was exFAT, buy info or mis info is all over the place.
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baseballfanz
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I've not used the on phone format feature yet.
To go from exFat to FAT32 I use Minitool partition
http://download.cnet.com/MiniTool-Pa...-10962200.html

To go from FAT32 to exFat I just used the Windows PC formatting feature.
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Biker1
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(Last edited by Biker1; 31st August 2013 at 06:28 PM.)
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Originally Posted by baseballfanz View Post
I've not used the on phone format feature yet.
To go from exFat to FAT32 I use Minitool partition
http://download.cnet.com/MiniTool-Pa...-10962200.html

To go from FAT32 to exFat I just used the Windows PC formatting feature.
I'm on Fat32 already.
Is re-formatting an exercise in futility?
I was thinking to re-format because:
- after months of making Nandroids without issue, I had trouble recently Booting after backing up to extSdCard. I'd freeze on Samsung splash after multiple backup attempts.
I backed up to internal and booted fine. I dont know if this was coincidence, but figured I'd format for good measure. Otherwise, the extSdCard is running without issue.
Not sure there even is an issue.
I actually had a successful Nandroid to extSdCard card afterwards.
Just thinking out loud.

I'll probably just empty the card of some gb, and not format.
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baseballfanz
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Quote:
Originally Posted by Biker1 View Post
I'm on Fat32 already.
Is re-formatting an exercise in futility?
I was thinking to re-format because:
- after months of making Nandroids without issue, I had trouble recently Booting after backing up to extSdCard. I'd freeze on Samsung splash after multiple backup attempts.
I backed up to internal and booted fine. I dont know if this was coincidence, but figured I'd format for good measure. Otherwise, the extSdCard is running without issue.
Not sure there even is an issue.
I actually had a successful Nandroid to extSdCard card afterwards.
Just thinking out loud.

I'll probably just empty the card of some gb, and not format.
Formatting is a breeze. I've gone from exFAT to FAT32 and vice versa without a problems. Both was achieved in minutes, only time consuming is copying contents to and from sd card.
I was also having troubles with TWRP not booting past Samsung splash screen and I was on exFAT at the time.
Like you have mentioned I only got that problems since flashing with Aroma and never before that.
I've since switch over to Philz CWM and everything is OK (except nandroid backup take ages)
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ChitownWingMan
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Originally Posted by blackknightavalon View Post
I recommend keeping it at Fat32. The phone won't read ExFat.

Sent from Spaceball One.

I'm sorry but this is an incorrect statement. Samsung has supported exFat on 64GB cards only on both the Galaxy S3 and S4. Their initial implementation was buggy but they did work the kinks out.

Here are the disadvantages to using FAT32 on 64GB cards:

Fat32 only supports files up to 4GB - 1 (technically 4,294,967,295 bytes) in length. A high definition video today takes up to 4GB per hour of video (even more sometimes). This limits the size of movies you can store.

The maximum size of a directory (actual number of bytes of the directory itself, not number of files) is limited to 65,5355 bytes. Considering that each directory entry takes up 32 bytes that limits the number of files in a single directory to 2047 entries if long file names are not used. With files names longer than 8 characters that number gets reduced significantly. That is a problem for apps like Titanium backup that use lots of files or if you have a lot of MP3s.

I have been using exFat on my 64GTB SDXC memory cards on both my S3 and my s4 without any problems after Samsung fixed the initial bugs.

You should not encounter any problems copying files from your FAT32 card to your PC and then copying them back to an exFat card. I have done that several times.
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Biker1
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@ChitownWingMan

Some good info there re capacities and such.
Earlier I decided to keep the format at Fat32, and didn't re format
If it ain't broke, don't fix it, as they say.
I also understand that exFat is Kernel sensitive, so I'd be limited to wha I can flash
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ChitownWingMan
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@ChitownWingMan

Some good info there re capacities and such.
Earlier I decided to keep the format at Fat32, and didn't re format
If it ain't broke, don't fix it, as they say.
I also understand that exFat is Kernel sensitive, so I'd be limited to wha I can flash
Owe ya a Thanks. My daily 8 limit ran out
Your welcome. I was one of the first people to report the exFat bug in the original release of the S3 and I worked with Sandisk and Samsung to identify it as a bug.

I actually tried to run NTFS for a while but I couldn't find a decent implementation for Android and EXT2, EXT3 or EXT4 have little or no support on Windows.
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PhilZ Touch 5.08.5 Recovery CWM Advanced Edition 6.x
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