The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Windows XP’ Category

A year ago on Telegram: “Do I need to use GarbageCollectAtoms in Delphi? I used it in delphi 7, but I dont know what is benefit. 😐”

Posted by jpluimers on 2022/10/20

Last week I found out that I had some Windows ATOM issues before, but this beats them easily was still a draft in stead if in the blog queue.

I got reminded to it by someone asking on Telegram about

“Do I need to use GarbageCollectAtoms in Delphi? I used it in delphi 7, but I dont know what is benefit. 😐”.

The short answer is: yes, if your Delphi application does terminate in a way that the Controls unit cannot cleanly unload (and cannot free the Windows atoms) or leaks Windows atoms in a different way. I have been in that situation and that’s why I wrote the above blog post that got published in 2016.

The longer answer is likely no, both the Windows atom and registered Windows message table share a heap and that registered VCL Windows message leaking bug got fixed some 10 years ago in Delphi XE2, see:

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Posted in Conference Topics, Conferences, Delphi, Development, Event, Power User, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows NT, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

I had some Windows ATOM issues before, but this beats them easily

Posted by jpluimers on 2022/10/19

I’ve had some issues with Windows ATOM tables filling up, but nothing like this security bypass:

A new Windows code injection technique, atombombing, which bypasses current security solutions.

Source: AtomBombing: Brand New Code Injection for Windows – Breaking Malware [WayBack] with source code at BreakingMalwareResearch/atom-bombing: Brand New Code Injection for Windows

Note that since writing the first draft, the above AtomBombing article moved via Wayback: blog.ensilo.com to [Wayback/Archive.is] AtomBombing – A Brand New Code Injection Technique for Windows | FortiGuard Labs.

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Posted in Development, Power User, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 9, Windows Development, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

Some notes on (temporarily) using CIFS/SMBv1 with Windows 10

Posted by jpluimers on 2022/06/13

Warning: only do this in a well confined network because of the SMBv1 has serious security implications!

Temporarily allowing SMBv1 makes it easier to transfer files from/to ancient Windows XP (virtual) machines.

Sometimes you need those to support hardware for which more modern drivers or support do not exist.

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Posted in Power User, Windows, Windows 10, Windows XP | Leave a Comment »

Windows: shutdown or reboot while preserving most of the running apps has been possible since…

Posted by jpluimers on 2022/05/26

Vista!

Shutting down or rebooting Windows allowing existing applications to reopen

Windows Vista introduced the /g switch in shutdown.exe and was unchanged in Windows 7:

    /g         Shutdown and restart the computer. After the system is
               rebooted, restart any registered applications.

I never noticed it until Windows 10 which began actively use it when applying system updates: then suddenly many of the previously running applications would reopen during startup.

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Posted in Power User, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

Converting an existing XP machine to a VMware ESXi  Virtual Machine and having boot issues?

Posted by jpluimers on 2022/05/02

A while ago I wrote about Stop 0x0000007B after converting an existing XP machine to a Virtual Machine (ESXi, Hyper-V, or other).

After this, the machine still had boot issues (a grey or black screen after boot, unless booted via Grub from a rescue CD).

The solution in retrospect was simple, but I only figured out after the fact what the solution had done.

Of course this gave me a facepalm moment, as back in the days, this was exactly the warning I gave everyone when installing Windows XP on ESXi anyway: use a SCSI buslogic based virtual disk, not an IDE or SATA virtual disk.

The reason is that Windows XP does not like the IDE/SATA disk that VMware provides. Windows Vista and up are less of a problem.

This is indeed what my practical solution did:

  • VMware Converter 4.x creates a VM with an IDE/SATA disk (as it cannot talk to the more recent ESXi versions at all because of API changes)
  • VMware Converter 6.x creates a VM with a buslogic SCSI base disk (and it can create it directly on your ESXi rig, though it will use a directory in the root of your data store, even if you prefer it somewhere deeper in the directory tree)

References:

–jeroen

Posted in ESXi6, ESXi6.5, ESXi6.7, Hardware, Power User, SAS/SATA, SCSI, Virtualization, VMware, VMware Converter, VMware ESXi, Windows, Windows XP | Leave a Comment »

 
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