Recent content by gsteemso

  1. gsteemso

    Repairing graphics cards

    I've been trying to work out how to fix a stack of graphics cards I've got. The most urgent are a pair of Nvidia GeForce 6600s (just 6600, no following letters). Alas, every thread on the topic seems to already have an obvious starting point, in the form of dodgy caps or heat discoloration or...
  2. gsteemso

    SevenTTY — local shell + terminal + SSH for classic Mac OS

    It does bring up an interesting point re: display efficiency. Presumably it would be a bit more performant if the blitting was suppressed when you knew for a fact that no changes had taken place. This reminds me of an old timer’s opinion I read once, to the effect that you really get a feel...
  3. gsteemso

    Rare PCI card

    in the extreme case you could try contacting them, but I've had poor luck trying that with very old items because the people who worked with them usually aren't there any more.
  4. gsteemso

    Macintosh Color Display giving up the ghost

    It really depends on how far out of spec your mains power can get. Power supplies are designed to cope with input that might be slightly off the nominal values for voltage and frequency, but get outside the range that something was made to handle and it becomes very unhappy. These days some...
  5. gsteemso

    Backporting HFS+ to Mac OS 8.0 and earlier

    I've been trying to work out what, in principle, would be needed to boot from an HFS+ volume on a 68k machine, which as we all know was never supported by Apple. So far my simplest solution is to use (something like?) that old utility program from "back in the day" that let you boot from a...
  6. gsteemso

    System 7 (and OS 8) natively boots on the Mac mini G4!

    ...Huh. You learn something new every day. Were there any actual hardware differences (as opposed to mere SIMM or hard drive configuration) amongst all those 630s?
  7. gsteemso

    System 7 (and OS 8) natively boots on the Mac mini G4!

    Wasn't the P in 7.1.2p short for “Performa”? I was under the impression that the only difference was the bundled applications. (7.1 Pro was 7.1.1, IIRC, so must have been unrelated to the PPC transition.) I may have that confused with later releases, I suppose, but I know there were _some_...
  8. gsteemso

    DumbDD

    true. I didn't know about the other partitions but I agree completely with your assessment.
  9. gsteemso

    DumbDD

    it sounds like his Whole Disc Image includes the partition table. That would cause any system that mounts the drive to ignore the unused space because it is not mapped, but should not cause any actual problems. The .iso will include an ISO <whateverthestandardnumberis> partition map, just as...
  10. gsteemso

    Minimum Mac OS Version For Reading A DVD Properly?

    Well, if you partitioned the daylights out of your BD-R before putting any data on it...
  11. gsteemso

    DumbDD

    You're quite correct, there's a driver on there too. I'd somehow forgotten that detail. 3rd party drivers that tried to be more performant were a legitimate market for a while.
  12. gsteemso

    Minimum Mac OS Version For Reading A DVD Properly?

    There's a point at which the limit rises from 2 GiB to 4, and then another point at which it rises from 4 GiB to 2 TiB. (Internally, it's going from a signed to unsigned 32-bit byte count, then to a 32-bit count of 512-byte sectors.)
  13. gsteemso

    DumbDD

    A CD or DVD uses a different partition-map format than a hard drive, and the Mac would not be able to make sense of it unless you wrote it to something it considers to be an optical disc. I'm not sure there's any way to do that with stock software.
  14. gsteemso

    DumbDD

    “dd” for Classic Mac OS sounds like a great idea! This could help with an issue that was mentioned in a thread somewhere here around 68kmla a couple of months ago... (some versions of?) the Finder and/or OS will write a few obscure bytes to any given volume that make it difficult or impossible...
  15. gsteemso

    Connecting an Apple Monitor to VGA

    I vaguelly recall at least one of the very early CRT monitors used Sync-on-Green. No idea which one(s), though.
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