Re: Format SD card while on UEFI shell

[Andrew Fish <afish@apple.com>]

The SD spec calls out MBR with a single partition and FAT32 or exFAT file system based on size.  You need to follow those rules if you want to use it with embedded devices. A general purpose OS will treat the SD card like a disk and the format does not really matter. 

Thanks,

Andrew Fish

> On Jun 2, 2017, at 10:30 AM, Blibbet <blibbet@gmail.com> wrote:
> 
> On 06/02/2017 12:23 AM, Shubham Mittal wrote:
>> Hi all,
>> 
>> Is there any utility/tool by which i can format sd card(connected to
> board) using UEFI shell.
>> 
>> As of now, i have to detach it and format it and attach it again..
> 
> I'm not sure this answers your question or not, but Intel has some UEFI
> disk utilities, but they're pre-EDK2 and non-BSD licensed. So you can
> fdisk/format from within the UEFI Shell, for FAT volumes. Brian of Intel
> says that there is work underway to revise these tools, unclear of what
> (perhaps relicense these tools, make them work with current toolchain,
> and perhaps transfer them from Intel to UEFI Forum) and when. See this
> message:
> 
> https://lists.01.org/pipermail/edk2-devel/2016-October/002734.html
> 
> Hmm, it looks like URL has changed:
> https://firmware.intel.com/content/uefidiskutilitiesagreement
> And the zip is no longer password-protected, thanks Intel lawyers!
> But the contents appear to be still last-updated in 2011.
> 
> HTH,
> Lee Fisher
> 
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