Creating exFAT partition (for PC & Mac) alongside bootable HFS+ partition?

Question

I am trying to subtract an hour (3600 s) from this time object that is defined as 01:00. When I do so, the time component disappears, and I am left with the date only. I need to preserve the time component--how do I do so? This only happens when the result of my subtraction is 00-00.

test <- strptime("2016-09-02_01-00", format =  "%Y-%m-%d_%H-%M", tz = "UTC")
test
[1] "2016-09-02 01:00:00 UTC"
test-3600
[1] "2016-09-02 UTC"

Solution

XP? Sorry, but you can't get there from here. Intel based Macs boot from GPT partitioned hard drives, and Windows XP can't read GPT discs at all without a third party driver, if one exists.

If you create the partition on your Mac, Vista and 7 should see it, I would think, unless Apple is doing something wrong with the partition table.

Comments

[Phil M]

UPDATE: I think the issue may be the partitioning scheme. I know that it must be GUID partition table in order to be able to boot the HFS+ volumes, but I don't know what Windows 7 can and cannot handle.

[MrFlick]

The time component is still there, it just doesn't print with all dates in a vector have time midnight. If you want to enforce a format to display, use strftime() or format() or something.

[David Arenburg]

That's also documented under ?strptime "The default for the format methods is "%Y-%m-%d %H:%M:%S" if any element has a time component which is not midnight, and "%Y-%m-%d" otherwise"

[Kyle Jones]

Wikipedia mentions that the 64-bit version of XP understands GPT, on the off change the questioner is actually running that.

[afrazier]

Very few people ran XP-64, and anyone that did should know that it's different enough to mention explicitly.

[afrazier]

According to the Microsoft GPT FAQ, yes. msdn.microsoft.com/en-us/windows/hardware/gg463525

[SilvanD]

Excellent. Thank you for your clarification. That answers it.