Questions tagged [boot]

Bootstrapping (booting) process, utilities and customisation.

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46
votes
8answers
11k views

Why weren't bootable game disks ever common on the IBM PC?

While for other platforms of that era (primarily, Amiga), putting a game on a bootable disk was quite a normal practice, this approach never taken off on IBM PC. Why not? I do remember people having ...
33
votes
8answers
6k views

How to put a delay in AUTOEXEC.BAT

I have this MS-DOS 6.22 machine which maps a network drive to a SAMBA share on a Raspberry PI. The PI is powered by a USB lead from the DOS machine, so the two power up together. The mapping starts ...
28
votes
6answers
18k views

Windows 98 with 2GB of RAM

I have assembled a retro-gaming PC out of an old Shuttle SN45G with a Windows 98/Windows XP dual boot. The motherboard can handle 2GB of RAM, but apparently Windows 98 can only handle 1 GiB. Windows ...
26
votes
2answers
3k views

How did an IBM 5150 with 16KB RAM work?

I keep reading that when it was first released, there was a variant of the IBM PC model 5150 that had only 16KB of RAM installed. From a hardware perspective, this would clearly work - the 5150 ...
24
votes
3answers
5k views

Why does DOS ask for the current date and time upon booting?

In most versions of DOS, when they are started from a medium that lacks an AUTOEXEC.BAT file, the very first thing COMMAND.COM does is ask the user to confirm the current date and time: Starting PC ...
23
votes
5answers
6k views

What makes a floppy disk bootable?

A lot of web sites describe how to create a bootable floppy disk using an existing image (via dd). But what about the image makes it bootable? I'm interested in making my own bootable floppy images ...
20
votes
2answers
3k views

Why do old computers perform a long memory test on every boot?

Basically any computers from the mid 90s and earlier perform a slow memory check on every single boot. The more memory there is present, the slower that process becomes, for example: https://www....
20
votes
1answer
684 views

What did the cassette bootloader in 8 Bit Ataris do?

...or for that matter, what didn't it do, so that you'd use the "bootloader/main program" separation instead of loading everything at once. Normally, when loading games or any non-BASIC software from ...
17
votes
3answers
3k views

What init system was used in early Linux distributions?

Nowadays there is quite some debate and controversy over whether Linux distributions should use systemd, GNU Shepherd etc. But all these systems are relatively new - for these examples dating back to ...
16
votes
2answers
3k views

Booting an Amiga 1000 directly to the hard drive without Kickstart floppy

The Amiga computers such as the Amiga 1000 required a Kickstart floppy to be able to boot directly into a hard drive. I have a Amiga 1000 as well but missing the Kickstart floppy. I would like to ...
14
votes
2answers
571 views

What is the minimum set of Kickstart kernel modules to allow an Amiga to boot?

Amiga OS resident modules (libraries, devices, etc...) are location-agnostic, in that it is technically possible to compile them as location-independent code to be loaded at runtime from disk, or to ...
14
votes
2answers
986 views

Why does my Acorn RiscPC display the POST boot error?

After removing the Intel DX 486 card from my RiscPC (running RiscOS 3.6), the computer doesn't start up properly. Instead, it displays the text POST in red. What does this error message mean?
14
votes
2answers
656 views

Can I trigger the Amiga ROM debugger from the boot prompt?

Suppose I have an Amiga computer without any working boot disks. Is it possible to trigger the built-in ROM monitor (RomWack or SAD, see https://theamigamuseum.com/amiga-kickstart-workbench-os/guru-...
10
votes
2answers
11k views

Windows 98 / XP Dual boot

I have acquired an old Shuttle X PC (Windows XP, Mini-DTX form factor HTPC) that works fine. As I can't do much with this form factor (I can't fit a modern motherboard in the case) and that the ...
10
votes
1answer
643 views

Is it possible to boot C64/C128 from floppy

When powered on 1541 reads the disk for a brief moment. Is it used to boot system from floppy? Is it possible to create a bootable commodore 64 floppy?
9
votes
3answers
2k views

Algorithm for Apple IIe and Apple IIgs boot/start beep

What is algorithms use for boot/start sound (when turn on computer) in Apple IIe and Apple IIgs? I can't find information about Apple boot sound algorithms or where in computer ROM store either ...
9
votes
1answer
426 views

How Amiga A590 autoboot ROM and bootable floppy disk works?

Commodore A590 was a peripheral hard drive and memory expansion unit for Amiga 500/500+ computers. It provides SCSI and XT-harddrive controller and 2MB Fast Ram. Here is the Big Book of Amiga Hardware ...
9
votes
1answer
555 views

How can I tell if an Apple II disk image is bootable?

I have around 500 floppy disk images from an Apple II and IIgs BBS/usergroup that closed down recently. Some of the disks are bootable, but many aren't. Is there an easy way to tell if a disk boots ...
9
votes
1answer
680 views

Boot Macintosh Quadra 800 from System 7.6.1 CD

I dug out an old Macintosh Quadra 800 that I've had on my shelf for a long while. I'm not even sure where I got it anymore... After a quick look in my VGA adapter bucket, I found I had the needed ...
8
votes
2answers
402 views

Toshiba T2000SX can't boot from non-original HDD - “02” all over the screen

I used to have an old Toshiba T2000SX laptop, but some day its HDD died. I found a newer laptop HDD that fit in and I could format it to appear to have a small enough capacity to get detected by the ...
8
votes
1answer
434 views

How to make bootable CD with multiple games for CDTV

How to make a disc with multiple titles on it, available to select from a menu? Did anyone have any luck creating a bootable CDTV disc using software mentioned on English Amiga Board and is is ...
8
votes
1answer
607 views

Creating a PDP-11 bootable disk

I want to create my own boot disk (an image file to use with simh) from my own PDP-11 code but I don't know how the code needs to be written to the disk/file so that it boots. I can load my code using ...
7
votes
2answers
1k views

Could Tandy TRS-80 Color Computers boot from disk at all?

I'm trying to find out if any of the Tandy CoCos could boot from disk. I'm thinking the answer is no but I'm having trouble confirming it. I believe that non-disk machines booted from the standard ...
7
votes
1answer
2k views

How to install System 7.5.5 on a Macintosh SE/30 using floppies?

I have a Macintosh SE/30 with a formatted Disk. I'd like to install the latest System 7 on it that will run. According to Wikipedia that should be 7.5.5. According to several sources Apple has made it ...
6
votes
3answers
735 views

64GB compact flash not booting up in DOS

I have purchased a 64GB compact flash UDMA card and am unable to boot up in DOS. The machine I'm running has a Pentium 1.6Ghz process in it just to give you an idea about how "modern" it is compared ...
6
votes
2answers
1k views

Can DOS boot to a hard drive other than HDA1?

I would like to experiment with DOS and would like to create a bootable partition on my hard drive (SDA) SATA device. I created a 1G FAT32 formatted partition on my SATA hard drive (SDA) and tried to ...
6
votes
1answer
1k views

Start application after Amiga Workbench 1.3 boot sequence

I want to start an application after the boot sequence of Workbench1.3: In my case an Amiga Shell application: Where are the startup files located and what are the changes to provide this?
5
votes
1answer
4k views

Accessing a USB drive from DOS

I am setting up a new development computer with FreeDOS and can boot off the SATA or USB drive. This is my first new computer with sophisticated UEFI (I have CSM enabled). If I boot from the USB I ...
5
votes
1answer
433 views

Can't boot FAT32 larger than 2GB, unlike FAT16

Why can my PC not boot FAT larger than 2GB (FAT32) in legacy mode, but FAT16 and NTFS work fine? It just gives me a non-system disk error, while booting the same (DOS boot disk) files under FAT16 ...
4
votes
2answers
539 views

How to get into Apple BASIC prompt on an Apple IIc?

I just picked up a used Apple IIc. For some reason all I get when I boot is Check Disk Drive on the screen, even with a bootable disk in the internal drive: I cannot even get the system to read the ...
4
votes
4answers
1k views

How does the Spectrum +3 know whether a disk is bootable or not?

I've been looking through documentation on The Sinclair/Amstrad Spectrum +3 which was the only Spectrum that came with a built-in floppy disk drive. The disk format was based on The Amstrad CPC and ...
4
votes
1answer
118 views

Determining which sectors in an Apple II floppy disk/image are used when the boot sector declares more than 1 sectors

The Apple II disk bootstrap process looks at the first byte of track zero sector zero to see how many sectors long the bootstrap code will be. It then loads these sectors at location 0x0800 and jumps ...
4
votes
1answer
204 views

Zenith SupersPort 286e doesn't boot at all

I have acquired a Zenith SupersPort 286e without its battery but with its (seemingly working) power supply. Sadly, the computer doesn't boot at all, nothing happens when I flick the On/Off switch. ...
4
votes
0answers
452 views

What computer (possibly a PC compatible) rendered a spinning floppy disk on the screen on a boot error?

I recall seeing an IBM PC compatible or similar system many years ago in a business environment that had a distinctive boot error screen. The system showed a spinning floppy disk on the screen, ...
3
votes
3answers
588 views

What was the distinctive rapid clicking sound in late 1990s desktops?

I am fairly sure that this clicking wasn't just because my computer had issues, although that would be interesting to find out. I distinctly remember that the first computers I owned would make a ...
3
votes
2answers
204 views

How do I navigate the boot menu in later model Spectrum emulators?

35 years ago I had an original 48K Sinclair ZX Spectrum. I never had any of the Plus or 128K models and practically never even touched one as I moved onto the Amiga quite early. I'm now playing with ...
3
votes
1answer
343 views

Atari ST series - bombs on boot

I have a faulty Atari 520STFM additional 4MB ram installed. It shows bombs on boot. I understand bombs are sort of code indicator of what is malfunctioning in the system, similar to what Guru ...
3
votes
2answers
407 views

SGI Octane and Octane 2 fail to boot

(Following up from Monitor for an SGI Octane?) I booted both my Octane and Octane 2 machines for the first time. I have a monitor connected via a 13W3-to-VGA adapter, but no PS2 keyboard or mouse yet....
3
votes
1answer
133 views

What is the process for TRS-80 Model I & III to boot from disk?

I can find enough mentions of bootable disks for TRS-80 Model I and Model III to be confident that they could boot from disk, but so far I'm failing to find much info on how that worked. In ...
3
votes
0answers
73 views

At which RAM address is the Microbee disk boot sector loaded and executed?

The Microbee was an early '80s Z80 microcomputer from Australia that was successful mostly in education. Looking at some disk image files I've downloaded I can see the disk layout seems to be very ...
2
votes
3answers
405 views

386 laptop: reads MBR, cannot boot DOS 6.22

I am trying to boot 386 laptop from a CF card. I've prepared image by installing DOS 6.22 in VirtualBox, and then burning image to a CF card. Image boots just fine in VirtualBox. CF card with the ...
2
votes
0answers
78 views

What does a “DK” signature at the start of track 0 sector 3 of a Dragon 32/64 floppy disk?

I'm looking at disk image files for the Dragon 32 / Dragon 64 computers. The Dragon computers are very similar to the Tandy TRS-80 Color Computer "CoCo" but are not clones and are not the ...
1
vote
1answer
93 views

How many different standard boot sectors are there for Apple II DOS 3.3?

When formatting a blank 5¼ disk on an 8-bit Apple II using the INIT command, was there only ever one variation of the boot sector code that was written, or was it updated from time to time over the ...
-1
votes
1answer
264 views

386 PC: reads MBR, cannot boot DOS 6.22 [duplicate]

I am trying to boot 386 laptop from a CF card. I've prepared image by installing DOS 6.22 in VirtualBox, and then burning image to a CF card. Image boots just fine in VirtualBox CF card with the ...