Talk:Bootloader

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Requested move 16 August 2021

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

The result of the move request was: Not moved. Nom agrees with not moving also. (non-admin closure) Natg 19 (talk) 00:23, 23 August 2021 (UTC)[reply]

Bootloader → Boot loader – Correct spelling uses a space PhotographyEdits (talk) 20:15, 15 August 2021 (UTC)[reply]

Bootloader is the common spelling. A google search for "bootloader" -"boot loader" returns almost twice as many results as "boot loader" -"bootloader". See also Google ngrams, where "bootloader" has been the predominant spelling in books since around 2014. --Ahecht (TALK
PAGE) 23:22, 15 August 2021 (UTC)[reply]

This is a contested technical request (permalink). Elli (talk | contribs) 01:17, 16 August 2021 (UTC)[reply]

I guess @Ahecht is correct, article can be kept at the current name. PhotographyEdits (talk) 18:36, 18 August 2021 (UTC)[reply]

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Classification of IPL loader for OS/360 and successors?

In an IPL of OS/360 and successors, cylinder 0 track 0 record 1 contains a 24-byte record, cylinder 0 track 0 record 2 contains the bootstrap loader and cylinder 0 track 0 record 3 contains the IPL loader constructed by a utility program from the IBM supplied IPLTEXT. The 24-byte record contains the initial PSW for the IPL loader and 2 channel Command Words (CCWs), the second of which is a Transfer In Channel (TIC) CCW to the bootstrap loader. The IPL loader locates the SYS1.NUCLEUS load library, loads the IEANUC0x member selected by the operator and transfers control to the Nucleus Initialization Program (NIP).

The IPL loader does not support chain loading, use of an alternate library or loading any member other than IEANUC0x.

So what is the taxomomy of those three records and, in particular, is the IPL loader stage 1 or stage 2? Shmuel (Seymour J.) Metz Username:Chatul (talk) 18:50, 16 December 2022 (UTC)[reply]

Sequence of events

{{ping|Soumyapatra13]] The system reset and Power On Self Test (POST) run before the boot loader. The boot loader and operating system handle the transition from the system reset stage, not from the power off stage. It is common to reboot (reIPL) multiple times without powering off, especially in the mainframe world. -- Shmuel (Seymour J.) Metz Username:Chatul (talk) 15:40, 10 November 2024 (UTC) IPL[reply]

Thanks, but isn't the same (erroneous) info present in the reinstated revision? @Chatul: Soumyapatra13 (talk) 16:36, 10 November 2024 (UTC)[reply]

@Soumyapatra13: I suspect that you're referring to the second paragraph of the lead, but it says something very different. However, I see that the following sections are not true in generally, e.g., A first-stage bootloader is a compact 512-byte program that resides in the Master Boot Record (MBR) in § First-stage boot loader. An example of that is the IPL process on the IBM System/360 through IBM z, which I mentioned in § Classification of IPL loader for OS/360 and successors? some time ago. -- Shmuel (Seymour J.) Metz Username:Chatul (talk) 11:06, 11 November 2024 (UTC)[reply]