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location United Kingdom
age 43
visits member for 4 years, 9 months
seen Dec 11 at 12:53

Oct
25
awarded  Popular Question
Aug
7
comment What does combining compression methods in 7z actually do?
I don't actually know what 7zip does, though - just commenting on your "as changing the order of the method affects the file size significantly" logic.
Aug
7
comment What does combining compression methods in 7z actually do?
Changing the order of compression methods should change the compressed size even if all methods are applied in sequence. Most compression typically comes from the first method applied. The result from that typically has high entropy, so is hard to compress further. There are exceptions for tranforms that aren't expected to compress the data themselves, but which encode it to be more compressible - e.g. the sequence 1, 2, 3, 4, 5 has no repetition of values, but has repetition of differences, so a delta transform improves compressibility. That's what Daniel B's answer is about.
Jul
30
awarded  Famous Question
Jul
29
awarded  Popular Question
Jul
2
awarded  Curious
Jun
20
comment Is Windows XP free yet?
I know licenses for obsolete versions are overpriced, and I know there's a case for old versions for special applications, but I don't think the two connect enough for profit (or at all). For example I saw a question on StackOverflow (I think) once where Windows 3.? was being used to control some factory equipment - the reason being that 16-bit Windows lacks a pre-emptive scheduler, so can meet hard real-time timing constraints. However, there was no suggestion the operating licenses had been bought recently for that - it was just old equipment still in use, including the old OS.
Jun
20
comment Is Windows XP free yet?
@LPChip - as Zoredache says, they'd be committing to pay license fees for everyone who gets a free XP license. More importantly, they either have to renegotiate all those licenses or else they have to comply with all terms - which probably means activation servers etc, and certainly means they "sell" license codes and keep track of them - even if only to know how many XP licenses they need to pay their licensees for. BTW - this is e.g. a variation on why old magazines aren't released free (all those fees for photos etc).
Jun
19
comment Is Windows XP free yet?
Microsoft probably couldn't release Windows XP free even if they wanted to. I think some components (especially bundled device drivers) aren't Microsofts property - they're licensed by Microsoft from other companies.
Apr
21
awarded  Caucus
Apr
5
comment Is there any way to use memory above 3.25GB using Windows XP
@user2284570 - That said, that's a very clever suggestion. I'm just nervous that there are likely to be compatibility issues (plus XP is gradually getting less important anyway - I still use it, but only as a second operating system for some old software).
Apr
5
comment Is there any way to use memory above 3.25GB using Windows XP
@user2284570 - No - it's not about trying to get Windows to manage the extra memory, it's about finding any way to use and benefit from it, including (as in the accepted answer) accessing the memory behind Windows back. I'm well aware that just because the chip has a feature doesn't mean the O/S can automatically exploit that, but nevertheless, the memory is there whether Windows manages it or not. Back in the days of 8-bit micros, accessing memory in gaps in the address space that the "operating system" didn't manage was an everyday thing - that was e.g. where you put machine code routines.
Mar
17
awarded  Yearling
Feb
9
revised How can I force an internal hard drive to power on or off when I want?
added 364 characters in body
Feb
8
awarded  Nice Question
Jan
28
revised What can cause Windows XP to reject a valid product key?
added 583 characters in body
Jan
27
comment What can cause Windows XP to reject a valid product key?
I can't install without providing the product key. The installer simply doesn't allow it. Click "Next" without providing a product key and it says you've provided an invalid product key. The only other button is "Back". Reset and (after entering language settings again) you end up back at the same product key screen. Maybe it's possible in XP Pro but not XP Home? Or for OEM but not retail?
Jan
27
comment What can cause Windows XP to reject a valid product key?
I didn't even realise I could install without providing the product key. Thanks - I'll give it a try a bit later.
Jan
27
comment What can cause Windows XP to reject a valid product key?
Unfortunately, I tried installing from the original disk with the BIOS settings tweaked already - it's a different crash (during device detection - IRQL_NOT_LESS_OR_EQUAL I think) but the install still fails. That's why I integrated SP3 as well as the AHCI/RAID driver in the slipstream CD.
Jan
27
comment What can cause Windows XP to reject a valid product key?
I have doubts about that because I'm using the same SP3 download that I've used for years, pretty much since SP3 was first released. And I've certainly applied SP3 to previous installs of the same XP home retail without problems. Still, doesn't hurt to ask Microsoft I guess. And if that's all it is, I can also make a slipstream from one of my OEM disks so I can use another product key.