Linked by Thom Holwerda on Fri 19th Oct 2012 20:07 UTC
Windows Interesting little tidbit from the Reddit AMA session with Microsoft's Surface team. One Redditor wondered just how much disk space Windows RT takes up - in other words, if you buy the 32GB Surface RT tablet, how much space is left for your stuff? It turns out that while Windows 8 RT is considerably smaller than its Windows 7 x86 predecessor, it's still huge by mobile standards.
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RE: Not quite true
by tanzam75 on Sat 20th Oct 2012 01:22 UTC in reply to "Not quite true"
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And it's not even 12 GB. It's actually 9.8 GiB.

I can't believe nobody has pointed this out yet.

What Microsoft actually said on that Reddit thread was that "After the OS, OfficeRT and a bunch of apps, you will still have more that 20GB." Thus, they did not say that disk usage was 12 GB. They said that free space was 20 GB.

Ah, but how did he get that free space figure? Probably in Windows Explorer -- which reports free disk space in binary gibibytes, even though it uses the "GB" abbreviation. Yet flash memory is sold using decimal gigabytes. My "128 GB" SSD is reported as "119 GB [= GiB]" in Windows Explorer.

A 32 GB flash drive = 29.8 GiB. If you have "more than 20 [GiB]" of free space remaining, then that means the entire running system takes up 9.8 GiB of space, not 12.

Now let us dissect the 9.8 GiB still further. What do you get on Windows RT that you don't get on iOS?

- Office RT. My x86 Office 2013 is 2 GiB, but Office RT includes fewer applications. Assume Office RT takes up 1.0 GiB.
- Drivers. My x64 Windows 8 install has 0.8 MiB of drivers, but Windows RT has a reduced driver set. Call it 0.5 GiB.
- Fonts, many of them bundled with Office. My install has 0.3 MiB of fonts. Fonts don't shrink when ported to ARM.

If you accept that these are worth the 1.8 GiB they take up, then we're now down to 8 GiB that can really be attributed to Windows RT and "a bunch of apps."

That includes the pagefile (about 1 GiB on a system with 2 GiB RAM), IMEs for a whole boatload of languages (the dictionaries for simplified Chinese alone are about 60 MB), etc.

Edited 2012-10-20 01:25 UTC

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